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Measurement of boosted Higgs bosons produced via vector boson fusion or gluon fusion in the H → b(b)over-bar decay mode using LHC proton-proton collision data at √s=13 TeV

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JOURNAL OF HIGH ENERGY PHYSICS 2024年第12期2024卷 35页

作者： Hayrapetyan, A. Tumasyan, A. Adam, W. Andrejkovic, J. W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. Hussain, P. S. Jeitler, M. Krammer, N. Li, A. Liko, D. Mikulec, I. Schieck, J. Schoefbeck, R. Schwarz, D. Sonawane, M. Templ, S. Waltenberger, W. Wulz, C. -E. Darwish, M. R. Janssen, T. Van Mechelen, P. Bols, E. S. D'Hondt, J. Dansana, S. De Moor, A. Delcourt, M. El Faham, H. Lowette, S. Makarenko, I. Mueller, D. Tavernier, S. Tytgat, M. Van Onsem, G. P. Van Putte, S. Vannerom, D. Clerbaux, B. Das, A. K. De Lentdecker, G. Evard, H. Favart, L. Gianneios, P. Hohov, D. Jaramillo, J. Khalilzadeh, A. Khan, F. A. Lee, K. Mahdavikhorrami, M. Malara, A. Paredes, S. Thomas, L. Vanden Bemden, M. Vander Velde, C. Vanlaer, P. De Coen, M. Dobur, D. Hong, Y. Knolle, J. Lambrecht, L. Mestdach, G. Amarilo, K. Mota Rendon, C. Samalan, A. Skovpen, K. Van den Bossche, N. van der Linden, J. Wezenbeek, L. Benecke, A. Bethani, A. Bruno, G. Caputo, C. Delaere, C. Donertas, I. S. Giammanco, A. Jain, Sa. Lemaitre, V. Lidrych, J. Mastrapasqua, P. Mondal, K. Tran, T. T. Wertz, S. Alves, G. A. Coelho, E. Hensel, C. Menezes De Oliveira, T. Moraes, A. Rebello Teles, P. Soeiro, M. Alda Junior, W. L. Alves Gallo Pereira, M. Barroso Ferreira Filho, M. Brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, E. M. Da Silveira, G. G. De Jesus Damiao, D. Fonseca De Souza, S. Gomes De Souza, R. Martins, J. Mora Herrera, C. Mundim, L. Nogima, H. Pinheiro, J. P. Santoro, A. Sznajder, A. Thiel, M. Vilela Pereira, A. Bernardes, C. A. Calligaris, L. Fernandez Perez Tomei, T. R. Gregores, E. M. Mercadante, P. G. Novaes, S. F. Orzari, B. Padula, Sandra S. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Shopova, M. Sultanov, G. Dimitrov, A. Litov, L. Pavlov, B. Petkov, P. Petrov, A. Shumka, E. Keshri, S. Thakur, S. Cheng, T. Javaid, T. Yuan, L. Hu, Z. Liu, J. Yi, K. Chen, G. M. Chen, H. S. Chen, M. Iemmi, F. Jiang, C. H. Kapoor, A. Liao, H. Liu, Z. -A. Sharma, R. Song, J. N. Tao, J. Wang, C. Wang, J. Wang, Z. Zhang, H. Ag Yerevan Phys Inst Yerevan Armenia Inst Hochenergiephys Vienna Austria Univ Antwerp Antwerp Belgium Vrije Univ Brussel Brussels Belgium Univ Libre Bruxelles Brussels Belgium Univ Ghent Ghent Belgium Catholic Univ Louvain Louvain La Neuve Belgium Ctr Brasileiro Pesquisas Fis Rio De Janeiro Brazil Univ Estado Rio de Janeiro Rio De Janeiro Brazil Univ Fed ABC Univ Estadual Paulista Sao Paulo Brazil Bulgarian Acad Sci Inst Nucl Res & Nucl Energy Sofia Bulgaria Univ Sofia Sofia Bulgaria Univ Tarapaca Inst Alta Invest Casilla 7 D Arica Chile Beihang Univ Beijing Peoples R China Tsinghua Univ Dept Phys Beijing Peoples R China Inst High Energy Phys Beijing Peoples R China Peking Univ State Key Lab Nucl Phys & Technol Beijing Peoples R China Sun Yat Sen Univ Guangzhou Peoples R China Univ Sci & Technol China Hefei Peoples R China Nanjing Normal Univ Nanjing Peoples R China Fudan Univ Inst Modern Phys Shanghai Peoples R China Fudan Univ Key Lab Nucl Phys & Ion Beam Applicat MOE Shanghai Peoples R China Zhejiang Univ Hangzhou Zhejiang Peoples R China Univ Los Andes Bogota Colombia Univ Antioquia Medellin Colombia Univ Split Fac Elect Engn Mech Engn & Naval Architecture Split Croatia Univ Split Fac Sci Split Croatia Inst Rudjer Boskov Zagreb Croatia Univ Cyprus Nicosia Cyprus Charles Univ Prague Prague Czech Republic Escuela Politec Nacl Quito Ecuador Univ San Francisco Quito Quito Ecuador Acad Sci Res & Technol Arab Republ Egypt Egyptian Network High Energy Phys Cairo Egypt Fayoum Univ Ctr High Energy Phys CHEP FU Al Fayyum Egypt NICPB Tallinn Estonia Univ Helsinki Dept Phys Helsinki Finland Helsinki Inst Phys Helsinki Finland Lappeenranta Lahti Univ Technol Lappeenranta Finland Univ Paris Saclay CEA IRFU Gif Sur Yvette France Inst Polytech Paris Ecole Polytech Lab Leprince Ringuet CNRSIN2P3 Palaiseau France Univ Strasbourg CNRS IPHC UMR 7178 Strasbourg France Inst Phys 2 Infinis Lyon IP2I Villeurbanne France Georgian

A measurement is performed of Higgs bosons produced with high transverse momentum (p(T)) via vector boson or gluon fusion in proton-proton collisions. The result is based on a data set with a center-of-mass energy of 13 TeV collected in 2016-2018 with the CMS detector at the LHC and corresponds to an integrated luminosity of 138 fb(-1). The decay of a high-p(T) Higgs boson to a boosted bottom quark-antiquark pair is selected using large-radius jets and employing jet substructure and heavy-flavor taggers based on machine learning techniques. Independent regions targeting the vector boson and gluon fusion mechanisms are defined based on the topology of two quark-initiated jets with large pseudorapidity separation. The signal strengths for both processes are extracted simultaneously by performing a maximum likelihood fit to data in the large-radius jet mass distribution. The observed signal strengths relative to the standard model expectation are 4.9(-1.6)(+1.9) and 1.6(-1.5)(+1.7) for the vector boson and gluon fusion mechanisms, respectively. A differential cross section measurement is also reported in the simplified template cross section framework.

关键词： Hadron-Hadron Scattering Higgs Physics

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Search for light long-lived particles decaying to displaced jets in proton-proton collisions at √s=13.6TeV

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REPORTS ON PROGRESS IN PHYSICS 2025年第3期88卷 037801-037801页

作者： Hayrapetyan, A. Tumasyan, A. Adam, W. Andrejkovic, W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. Hussain, P. S. Jeitler, M. Krammer, N. Li, A. Liko, D. Mikulec, I. Schieck, J. Schofbeck, R. Schwarz, D. Sonawane, M. Waltenberger, W. Wulz, C-E Janssen, T. Van Laer, T. Van Mechelen, P. Breugelmans, N. D'Hondt, J. Dansana, S. De Moor, A. Delcourt, M. Heyen, F. Lowette, S. Makarenko, I. Mueller, D. Tavernier, S. Tytgat, M. Van Onsem, G. P. Van Putte, S. Vannerom, D. Bilin, B. Clerbaux, B. Das, A. K. De Lentdecker, G. Evard, H. Favart, L. Gianneios, P. Jaramillo, J. Khalilzadeh, A. Khan, F. A. Lee, K. Mahdavikhorrami, M. Malara, A. Paredes, S. Shahzad, M. A. Thomas, L. Vanden Bemden, M. Vander Velde, C. Vanlaer, P. De Coen, M. Dobur, D. Gokbulut, G. Hong, Y. Knolle, J. Lambrecht, L. Marckx, D. Amarilo, K. Mota Skovpen, K. Van den Bossche, N. van der Linden, J. Wezenbeek, L. Benecke, A. Bethani, A. Bruno, G. Caputo, C. De Jeneret, J. De Favereau Delaere, C. Donertas, I. S. Giammanco, A. Guzel, A. O. Jain, Sa Lemaitre, V. Lidrych, J. Mastrapasqua, P. Tran, T. T. Wertz, S. Alves, G. A. Alves Gallo Pereira, M. Coelho, E. Correia Silva, G. Hensel, C. Menezes De Oliveira, T. Mora Herrera, C. Moraes, A. Rebello Teles, P. Soeiro, M. Vilela Pereira, A. Alda Junior, W. L. Barroso Ferreira Filho, M. Brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, E. M. Da Silveira, G. G. De Jesus Damiao, D. Fonseca De Souza, S. Gomes De Souza, R. Laux Kuhn, T. Macedo, M. Martins, J. Mundim, L. Nogima, H. Pinheiro, J. P. Santoro, A. Sznajder, A. Thiel, M. Bernardes, C. A. Calligaris, L. Fernandez Perez Tomei, T. R. Gregores, E. M. Maietto Silverio, I. Mercadante, P. G. Novaes, S. F. Orzari, B. Padula, Sandra S. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Shopova, M. Sultanov, G. Dimitrov, A. Litov, L. Pavlov, B. Petkov, P. Petrov, A. Shumka, E. Keshri, S. Laroze, D. Thakur, S. Cheng, T. Javaid, T. Yuan, L. Hu, Z. Liang, Z. Liu, J. Yi, K. Chen, G. M. Chen, H. S. Chen, M. Iemmi, F. Jiang, C. H. Kapo CERN Geneva Switzerland Yerevan Phys Inst Yerevan Armenia Inst Hochenergiephys Vienna Austria Univ Antwerp Antwerp Belgium Vrije Univ Brussel Brussels Belgium Univ Libre Bruxelles Brussels Belgium Univ Ghent Ghent Belgium Catholic Univ Louvain Louvain La Neuve Belgium Ctr Brasileiro Pesquisas Fis Rio De Janeiro Brazil Univ Estado Rio de Janeiro Rio De Janeiro Brazil Fed Univ ABC Univ Estadual Paulista Sao Paulo Brazil Bulgarian Acad Sci Inst Nucl Res & Nucl Energy Sofia Bulgaria Univ Sofia Sofia Bulgaria Univ Tarapaca Inst Alta Invest Casilla 7 D Arica Chile Beihang Univ Beijing Peoples R China Tsinghua Univ Dept Phys Beijing Peoples R China Inst High Energy Phys Beijing Peoples R China Peking Univ State Key Lab Nucl Phys & Technol Beijing Peoples R China South China Normal Univ Guangdong Prov Key Lab Nucl Sci & Guangdong Hong Guangzhou Peoples R China Sun Yat Sen Univ Guangzhou Peoples R China Univ Sci & Technol China Hefei Peoples R China Nanjing Normal Univ Nanjing Peoples R China Fudan Univ Inst Modern Phys Shanghai Peoples R China Fudan Univ Key Lab Nucl Phys & Ion Beam Applicat MOE Shanghai Peoples R China Zhejiang Univ Hangzhou Zhejiang Peoples R China Univ Los Andes Bogota Colombia Univ Antioquia Medellin Colombia Univ Split Fac Elect Engn Mech Engn & Naval Architecture Split Croatia Univ Split Fac Sci Split Croatia Inst Rudjer Boskov Zagreb Croatia Univ Cyprus Nicosia Cyprus Charles Univ Prague Prague Czech Republic Univ San Francisco Quito Quito Ecuador Acad Sci Res & Technol Arab Republ Egypt Egyptian Network High Energy Phys Cairo Egypt Fayoum Univ Ctr High Energy Phys CHEP FU Al Fayyum Egypt NICPB Tallinn Estonia Univ Helsinki Dept Phys Helsinki Finland Helsinki Inst Phys Helsinki Finland Lappeenranta Lahti Univ Technol Lappeenranta Finland Univ Paris Saclay IRFU CEA Gif Sur Yvette France Inst Polytech Paris Ecole Polytech Lab Leprince Ringuet CNRSIN2P3 Palaiseau France Univ Strasbourg CNRS IPHC

A search for light long-lived particles (LLPs) decaying to displaced jets is presented, using a data sample of proton-proton collisions at a center-of-mass energy of 13.6 TeV, corresponding to an integrated luminosity of 34.7 fb(-1), collected with the CMS detector at the CERN LHC in 2022. Novel trigger, reconstruction, and machine-learning techniques were developed for and employed in this search. After all selections, the observations are consistent with the background predictions. Limits are presented on the branching fraction of the Higgs boson to LLPs that subsequently decay to quark pairs or tau lepton pairs. An improvement by up to a factor of 10 is achieved over previous limits for models with LLP masses smaller than 60 GeV and proper decay lengths smaller than 1 m. The first constraints are placed on the fraternal twin Higgs (FTH) and folded supersymmetry (FSUSY) models, where the lower bounds on the top quark partner mass reach up to 350 GeV for the FTH model and 250 GeV for the FSUSY model.

关键词： CMS LLP displaced jets exotic Higgs decays

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Pseudorapidity distributions of charged hadrons in lead-lead collisions at √SNN=5.36 TeV

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PHYSICS LETTERS B 2025年 861卷

作者： Hayrapetyan, A. Tumasyan, A. Adam, W. Andrejkovic, J. W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. Hussain, P. S. Jeitler, M. Krammer, N. Li, A. Liko, D. Mikulec, I. Schieck, J. Schoefbeck, R. Schwarz, D. Sonawane, M. Templ, S. Waltenberger, W. Wulz, C. -E. Darwish, M. R. Janssen, T. Van Mechelen, P. Breugelmans, N. D'Hondt, J. Dansana, S. De Moor, A. Delcourt, M. Heyen, F. Lowette, S. Makarenko, I. Mueller, D. Tavernier, S. Tytgat, M. Van Onsem, G. P. Van Putte, S. Vannerom, D. Clerbaux, B. Das, A. K. De Lentdecker, G. Evard, H. Favart, L. Gianneios, P. Hohov, D. Jaramillo, J. Khalilzadeh, A. Khan, F. A. Lee, K. Mahdavikhorrami, M. Malara, A. Paredes, S. Thomas, L. Vanden Bemden, M. Vander Velde, C. Vanlaer, P. De Coen, M. Dobur, D. Gokbulut, G. Hong, Y. Knolle, J. Lambrecht, L. Marckx, D. Mestdach, G. Amarilo, K. Mota Rendon, C. Samalan, A. Skovpen, K. Van den Bossche, N. van der Linden, J. Wezenbeek, L. Benecke, A. Bethani, A. Bruno, G. Caputo, C. De Favereau De Jeneret, J. Delaere, C. Donertas, I. S. Giammanco, A. Guzel, A. O. Jain, Sa. Lemaitre, V. Lidrych, J. Mastrapasqua, P. Tran, T. T. Wertz, S. Alves, G. A. Coelho, E. Hensel, C. Menezes De Oliveira, T. Moraes, A. Rebello Teles, P. Soeiro, M. Vilela Pereira, A. Alda Junior, W. L. Alves Gallo Pereira, M. Barroso Ferreira Filho, M. Brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, E. M. Da Silveira, G. G. De Jesus Damiao, D. Fonseca De Souza, S. Gomes De Souza, R. Macedo, M. Martins, J. Mora Herrera, C. Mundim, L. Nogima, H. Pinheiro, J. P. Santoro, A. Sznajder, A. Thiel, M. Bernardes, C. A. Calligaris, L. Fernandez Perez Tomei, T. R. Gregores, E. M. Maietto Silverio, I. Mercadante, P. G. Novaes, S. F. Orzari, B. Padula, Sandra S. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Shopova, M. Sultanov, G. Dimitrov, A. Litov, L. Pavlov, B. Petkov, P. Petrov, A. Shumka, E. Keshri, S. Thakur, S. Cheng, T. Javaid, T. Yuan, L. Hu, Z. Liang, Z. Liu, J. Yi, K. Chen, G. M. Chen, H. S. Chen, M. Iemmi, F. Jiang, C. H. Kapoor Yerevan Phys Inst Yerevan Armenia Inst Hochenergiephys Vienna Austria Univ Antwerp Antwerp Belgium Vrije Univ Brussel Brussels Belgium Univ Libre Bruxelles Brussels Belgium Univ Ghent Ghent Belgium Catholic Univ Louvain Louvain La Neuve Belgium Ctr Brasileiro Pesquisas Fis Rio De Janeiro Brazil Univ Estado Rio de Janeiro Rio De Janeiro Brazil Univ Fed ABC Univ Estadual Paulista Sao Paulo Brazil Bulgarian Acad Sci Inst Nucl Res & Nucl Energy Sofia Bulgaria Univ Sofia Sofia Bulgaria Univ Tarapaca Inst Alta Invest Casilla 7 D Arica Chile Beihang Univ Beijing Peoples R China Tsinghua Univ Dept Phys Beijing Peoples R China Inst High Energy Phys Beijing Peoples R China Peking Univ State Key Lab Nucl Phys & Technol Beijing Peoples R China South China Normal Univ Guangdong Prov Key Lab Nucl Sci Guangzhou Guangdong Peoples R China South China Normal Univ Guangdong Hong Kong Joint Lab Quantum Matter Guangzhou Guangdong Peoples R China Sun Yat Sen Univ Guangzhou Peoples R China Univ Sci & Technol China Hefei Peoples R China Nanjing Normal Univ Nanjing Peoples R China Fudan Univ Inst Modern Phys Shanghai Peoples R China Fudan Univ Key Lab Nucl Phys & Ion Beam Applicat MOE Shanghai Peoples R China Zhejiang Univ Hangzhou Zhejiang Peoples R China Univ Los Andes Bogota Colombia Univ Antioquia Medellin Colombia Univ Split Fac Elect Engn Mech Engn & Naval Architecture Split Croatia Univ Split Fac Sci Split Croatia Inst Rudjer Boskovic Zagreb Croatia Univ Cyprus Nicosia Cyprus Charles Univ Prague Prague Czech Republic Univ San Francisco Quito Quito Ecuador Egyptian Network High Energy Phys Acad Sci Res & Technol Arab Republ Egypt Cairo Egypt Fayoum Univ Ctr High Energy Phys CHEP FU Al Fayyum Egypt NICPB Tallinn Estonia Univ Helsinki Dept Phys Helsinki Finland Helsinki Inst Phys Helsinki Finland Lappeenranta Lahti Univ Technol Lappeenranta Finland Univ Paris Saclay CEA IRFU Gif Sur Yvette France Inst Polytech Paris Ecole Polytech CN

The pseudorapidity (eta) distributions of charged hadrons are measured using data collected at the highest ever nucleon-nucleon center-of-mass energy of root s(NN) = 5.36 TeV for collisions of lead-lead ions. The data were recorded by the CMS experiment at the LHC in 2022 and correspond to an integrated luminosity of 0.30 +/- 0.03 mu b(-1). Using the CMS silicon pixel detector, the yields of primary charged hadrons produced in the range |eta| < 2.6 are reported. The evolution of the midrapidity particle density as a function of collision centrality is also reported. In the 5% most central collisions, the charged-hadron eta density in the range |eta| < 0.5 is found to be 2032 +/- 91 (syst), with negligible statistical uncertainty. This result is consistent with an extrapolation from nucleus-nucleus collision data at lower center-of-mass energies. Comparisons are made to various Monte Carlo event generators and to previous measurements of lead-lead and xenon-xenon collisions at similar collision energies. These new data detail the dependence of particle production on the collision energy, initial collision geometry, and the size of the colliding nuclei.

关键词： CMS Hadrons Multiplicity Spectra

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Measurement of multidifferential cross sections for dijet production in proton-proton collisions at √s=13TeV

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EUROPEAN PHYSICAL JOURNAL C 2025年第1期85卷 72-72页

作者： Hayrapetyan, A. Tumasyan, A. Adam, W. Andrejkovic, J. W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. Del Valle, A. Escalante Hussain, P. S. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Mikulec, I. Schieck, J. Schoefbeck, R. Schwarz, D. Sonawane, M. Templ, S. Waltenberger, W. Wulz, C. -E. Darwish, M. R. Janssen, T. Kello, T. Van Mechelen, P. Bols, E. S. D'Hondt, J. De Moor, A. Delcourt, M. El Faham, H. Lowette, S. Makarenko, I. Morton, A. Mueller, D. Sahasransu, A. R. Tavernier, S. Van Putte, S. Vannerom, D. Clerbaux, B. Dansana, S. De Lentdecker, G. Favart, L. Hohov, D. Jaramillo, J. Lee, K. Mahdavikhorrami, M. Malara, A. Paredes, S. Petre, L. Postiau, N. Thomas, L. Vanden Bemden, M. Vander Velde, C. Vanlaer, P. De Coen, M. Dobur, D. Knolle, J. Lambrecht, L. Mestdach, G. Rendon, C. Samalan, A. Skovpen, K. Tytgat, M. Van den Bossche, N. Vermassen, B. Wezenbeek, L. Benecke, A. Bruno, G. Bury, F. Caputo, C. Delaere, C. Donertas, I. S. Giammanco, A. Jaffel, K. Jain, Sa. Lemaitre, V. Lidrych, J. Mastrapasqua, P. Mondal, K. Tran, T. T. Wertz, S. Alves, G. A. Coelho, E. Hensel, C. Moraes, A. Rebello Teles, P. Alda Junior, W. L. Alves Gallo Pereira, M. Barroso Ferreira Filho, M. Brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, E. M. Da Silveira, G. G. De Jesus Damiao, D. Dos Santos Sousa, V. Fonseca De Souza, S. Martins, J. Mora Herrera, C. Mota Amarilo, K. Mundim, L. Nogima, H. Santoro, A. Silva Do Amaral, S. M. Sznajder, A. Thiel, M. Vilela Pereira, A. Bernardes, C. A. Calligaris, L. Fernandez Perez Tomei, T. R. Gregores, E. M. Mercadante, P. G. Novaes, S. F. Orzari, B. Padula, Sandra S. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Shopova, M. Sultanov, G. Dimitrov, A. Ivanov, T. Litov, L. Pavlov, B. Petkov, P. Petrov, A. Shumka, E. Keshri, S. Thakur, S. Cheng, T. Guo, Q. Javaid, T. Mittal, M. Yuan, L. Bauer, G. Hu, Z. Yi, K. Chen, G. M. Chen, H. S. Chen, M. Iemmi, F. Jiang, C. H. Kapoor, A. Liao, H. Liu, Z. -A. Monti, F. Sharma, R. Song, J. N. Tao, J. Wang, C. Wang, J. Z Yerevan Phys Inst Yerevan Armenia Inst Hochenergiephys Vienna Austria Univ Antwerp Antwerp Belgium Vrije Univ Brussel Brussels Belgium Univ Libre Bruxelles Brussels Belgium Univ Ghent Ghent Belgium Catholic Univ Louvain Louvain La Neuve Belgium Ctr Brasileiro Pesquisas Fis Rio De Janeiro Brazil Univ Estado Rio de Janeiro Rio De Janeiro Brazil Univ Fed ABC Univ Estadual Paulista Sao Paulo Brazil Bulgarian Acad Sci Inst Nucl Res & Nucl Energy Sofia Bulgaria Univ Sofia Sofia Bulgaria Univ Tarapaca Inst Alta Invest Casilla 7 D Arica Chile Beihang Univ Beijing Peoples R China Tsinghua Univ Dept Phys Beijing Peoples R China Inst High Energy Phys Beijing Peoples R China Peking Univ State Key Lab Nucl Phys & Technol Beijing Peoples R China Sun Yat Sen Univ Guangzhou Peoples R China Univ Sci & Technol China Hefei Peoples R China Fudan Univ Inst Modern Phys Shanghai Peoples R China Fudan Univ Key Lab Nucl Phys & Ion Beam Applicat MOE Shanghai Peoples R China Zhejiang Univ Hangzhou Zhejiang Peoples R China Univ Los Andes Bogota Colombia Univ Antioquia Medellin Colombia Univ Split Fac Elect Engn Mech Engn & Naval Architecture Split Croatia Univ Split Fac Sci Split Croatia Inst Rudjer Boskovic Zagreb Croatia Univ Cyprus Nicosia Cyprus Charles Univ Prague Prague Czech Republic Escuela Politec Nacl Quito Ecuador Univ San Francisco Quito Quito Ecuador Acad Sci Res & Technol Arab Republ Egypt Egyptian Network High Energy Phys Cairo Egypt Fayoum Univ Ctr High Energy Phys CHEP FU Al Fayyum Egypt NICPB Tallinn Estonia Univ Helsinki Dept Phys Helsinki Finland Helsinki Inst Phys Helsinki Finland Lappeenranta Lahti Univ Technol Lappeenranta Finland Univ Paris Saclay CEA IRFU Gif Sur Yvette France Inst Polytech Paris Ecole Polytech CNRS Lab Leprince RinguetIN2P3 Palaiseau France Univ Strasbourg CNRS IPHC UMR 7178 Strasbourg France Inst Phys 2 Infinis Lyon IP2I Villeurbanne France Georgian Tech Univ Tbilisi Georgia Rhein Westfal TH

A measurement of the dijet production cross section is reported based on proton-proton collision data collected in 2016 at root s = 13 TeV by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of up to 36.3 fb(-1). Jets are reconstructed with the anti-k(T) algorithm for distance parameters of R = 0.4 and 0.8. Cross sections are measured double-differentially (2D) as a function of the largest absolute rapidity vertical bar y vertical bar(max) of the two jets with the highest transverse momenta p(T) and their invariant mass m(1,2), and triple-differentially (3D) as a function of the rapidity separation y*, the total boost y(b), and either m(1,2) or the average p(T) of the two jets. The cross sections are unfolded to correct for detector effects and are compared with fixed-order calculations derived at next-to-next-to-leading order in perturbative quantum chromodynamics. The impact of the measurements on the parton distribution functions and the strong coupling constant at the mass of the Z boson is investigated, yielding a value of alpha(S)(m(Z)) = 0.1179 +/- 0.0019.

关键词： Jets

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Search for dark matter particles in W⁺W^- events with transverse momentum imbalance in proton-proton collisions at √s=13 TeV

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JOURNAL OF HIGH ENERGY PHYSICS 2024年第3期2024卷 1-45页

作者： Hayrapetyan, A. Tumasyan, A. Adam, W. Andrejkovic, J. W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. Del Valle, A. Escalante Hussain, P. S. Jeitler, M. Krammer, N. Liko, D. Mikulec, I. Schieck, J. Schoefbeck, R. Schwarz, D. Sonawane, M. Templ, S. Waltenberger, W. Wulz, C. -E. Darwish, M. R. Janssen, T. Van Mechelen, P. Bols, E. S. D'Hondt, J. Dansana, S. De Moor, A. Delcourt, M. El Faham, H. Lowette, S. Makarenko, I. Mueller, D. Sahasransu, A. R. Tavernier, S. Tytgat, M. Van Putte, S. Vannerom, D. Clerbaux, B. De Lentdecker, G. Favart, L. Hohov, D. Jaramillo, J. Khalilzadeh, A. Lee, K. Mahdavikhorrami, M. Malara, A. Paredes, S. Petre, L. Postiau, N. Thomas, L. Vanden Bemden, M. Vander Velde, C. Vanlaer, P. De Coen, M. Dobur, D. Hong, Y. Knolle, J. Lambrecht, L. Mestdach, G. Rendon, C. Samalan, A. Skovpen, K. Van Den Bossche, N. Wezenbeek, L. Benecke, A. Bruno, G. Caputo, C. Delaere, C. Donertas, I. S. Giammanco, A. Jaffel, K. Jain, Sa. Lemaitre, V. Lidrych, J. Mastrapasqua, P. Mondal, K. Tran, T. T. Wertz, S. Alves, G. A. Coelho, E. Hensel, C. Menezes De Oliveira, T. Moraes, A. Teles, P. Rebello Soeiro, M. Alda Junior, W. L. Alves Gallo Pereira, M. Barroso Ferreira Filho, M. Brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, E. M. Da Silveira, G. G. De Jesus Damiao, D. Fonseca De Souza, S. Martins, J. Mora Herrera, C. Mota Amarilo, K. Mundim, L. Nogima, H. Santoro, A. Silva Do Amaral, S. M. Sznajder, A. Thiel, M. Vilela Pereira, A. Bernardes, C. A. Calligaris, L. Fernandez Perez Tomei, T. R. Gregores, E. M. Mercadante, P. G. Novaes, S. F. Orzari, B. Padula, Sandra S. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Shopova, M. Sultanov, G. Dimitrov, A. Ivanov, T. Litov, L. Pavlov, B. Petkov, P. Petrov, A. Shumka, E. Keshri, S. Thakur, S. Cheng, T. Guo, Q. Javaid, T. Mittal, M. Yuan, L. Bauer, G. Hu, Z. Yi, K. Chen, G. M. Chen, H. S. Chen, M. Iemmi, F. Jiang, C. H. Kapoor, A. Liao, H. Liu, Z. -A. Monti, F. Sharma, R. Song, J. N. Tao, J. Zhang, C. Zhang, J. Wang, Z. Zhang, Yerevan Phys Inst Yerevan Armenia Inst Hochenergiephys Vienna Austria Univ Antwerp Antwerp Belgium Vrije Univ Brussel Brussels Belgium Univ Libre Bruxelles Brussels Belgium Univ Ghent Ghent Belgium Catholic Univ Louvain Louvain Belgium Ctr Brasileiro Pesquisas Fis Rio De Janeiro Brazil Univ Estado Rio de Janeiro Rio De Janeiro Brazil Univ Fed ABC Univ Estadual Paulista Sao Paulo Brazil Bulgarian Acad Sci Inst Nucl Res & Nucl Energy Sofia Bulgaria Univ Sofia Sofia Bulgaria Univ Tarapaca Inst Alta Invest Casilla 7 D Arica Chile Beihang Univ Beijing Peoples R China Tsinghua Univ Dept Phys Beijing Peoples R China Inst High Energy Beijing Peoples R China Peking Univ State Key Lab Nucl Phys & Technol Beijing Peoples R China Sun Yat Sen Univ Guangzhou Peoples R China Univ Sci & Technol China Hefei Peoples R China Fudan Univ Inst Modern Phys Shanghai Peoples R China Fudan Univ Key Lab Nucl Phys & Ion Beam Applicat MOE Shanghai Peoples R China Zhejiang Univ Hangzhou Zhejiang Peoples R China Univ Los Andes Bogota Colombia Univ Antioquia Medellin Colombia Univ Split Fac Elect Engn Mech Engn & Naval Architecture Split Croatia Univ Split Fac Sci Split Croatia Inst Rudjer Boskov Zagreb Croatia Univ Cyprus Nicosia Cyprus Charles Univ Prague Prague Czech Republic Escuela Politec Nacl Quito Ecuador Univ San Francisco Quito Quito Ecuador Egyptian Network High Energy Phys Acad Sci Res & Technol Arab Republ Egypt Cairo Egypt Fayoum Univ Ctr High Energy Phys CHEP FU Al Fayyum Egypt NICPB Tallinn Estonia Univ Helsinki Dept Phys Helsinki Finland Helsinki Inst Phys Helsinki Finland Lappeenranta Lahti Univ Technol Lappeenranta Finland Univ Paris Saclay CEA IRFU Gif Sur Yvette France Inst Polytech Paris Ecole Polytech Lab Leprince Ringuet CNRS IN2P3 Palaiseau France Univ Strasbourg CNRS IPHC UMR 7178 Strasbourg France IP2I Villeurbanne France Georgian Tech Univ Tbilisi Georgia Rhein Westfal TH Aachen Phys Inst 1 Aachen Germany Rhein

A search for dark matter particles is performed using events with a pair of W bosons and large missing transverse momentum. Candidate events are selected by requiring one or two leptons (l = electrons or muons). The analysis is based on proton-proton collision data collected at a center-of-mass energy of 13TeV by the CMS experiment at the LHC and corresponding to an integrated luminosity of 138 fb(-1). No significant excess over the expected standard model background is observed in the l nu qq and 2l2 nu final states of the W+W- boson pair. Limits are set on dark matter production in the context of a simplified dark Higgs model, with a dark Higgs boson mass above the W+W- mass threshold. The dark matter phase space is probed in the mass range 100-300 GeV, extending the scope of previous searches. Current exclusion limits are improved in the range of dark Higgs masses from 160 to 250 GeV, for a dark matter mass of 200 GeV.

关键词： Beyond Standard Model Dark Matter Hadron-Hadron Scattering Vector Boson Production

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Search for Higgs boson pair production with one associated vector boson in proton-proton collisions at √s=13 TeV

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JOURNAL OF HIGH ENERGY PHYSICS 2024年第10期2024卷 61页

作者： Hayrapetyan, A. Tumasyan, A. Adam, W. Andrejkovic, J. W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. Del Valle, A. Escalante Hussain, P. S. Jeitler, M. Krammer, N. Liko, D. Mikulec, I. Schieck, J. Schoefbeck, R. Schwarz, D. Sonawane, M. Templ, S. Waltenberger, W. Wulz, C. -E. Darwish, M. R. Janssen, T. Van Mechelen, P. Bols, E. S. D'Hondt, J. Dansana, S. De Moor, A. Delcourt, M. El Faham, H. Lowette, S. Makarenko, I. Mueller, D. Sahasransu, A. R. Tavernier, S. Tytgat, M. Van Putte, S. Vannerom, D. Clerbaux, B. De Lentdecker, G. Favart, L. Hohov, D. Jaramillo, J. Khalilzadeh, A. Lee, K. Mahdavikhorrami, M. Malara, A. Paredes, S. Petre, L. Postiau, N. Thomas, L. Vanden Bemden, M. Vander Velde, C. Vanlaer, P. De Coen, M. Dobur, D. Hong, Y. Knolle, J. Lambrecht, L. Mestdach, G. Rendon, C. Samalan, A. Skovpen, K. Van Den Bossche, N. Wezenbeek, L. Benecke, A. Bruno, G. Caputo, C. Delaere, C. Donertas, I. S. Giammanco, A. Jaffel, K. Jain, Sa. Lemaitre, V. Lidrych, J. Mastrapasqua, P. Mondal, K. Tran, T. T. Wertz, S. Alves, G. A. Coelho, E. Hensel, C. Menezes De Oliveira, T. Moraes, A. Rebello Teles, P. Soeiro, M. Alda Junior, W. L. Alves Gallo Pereira, M. Barroso Ferreira Filho, M. Brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, E. M. Da Silveira, G. G. De Jesus Damiao, D. Fonseca De Souza, S. Martins, J. Mora Herrera, C. Mota Amarilo, K. Mundim, L. Nogima, H. Santoro, A. Silva Do Amaral, S. M. Sznajder, A. Thiel, M. Vilela Pereira, A. Bernardes, C. A. Calligaris, L. Fernandez Perez Tomei, T. R. Gregores, E. M. Mercadante, P. G. Novaes, S. F. Orzari, B. Padula, Sandra S. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Shopova, M. Sultanov, G. Dimitrov, A. Ivanov, T. Litov, L. Pavlov, B. Petkov, P. Petrov, A. Shumka, E. Keshri, S. Thakur, S. Cheng, T. Guo, Q. Javaid, T. Mittal, M. Yuan, L. Bauer, G. Hu, Z. Yi, K. Chen, G. M. Chen, H. S. Chen, M. Iemmi, F. Jiang, C. H. Kapoor, A. Liao, H. Liu, Z. -A. Monti, F. Shahzad, M. A. Sharma, R. Song, J. N. Tao, J. Wang, C. Wang, J. Wan Yerevan Phys Inst Yerevan Armenia Inst Hochenergiephys Vienna Austria Univ Antwerp Antwerp Belgium Vrije Univ Brussel Brussels Belgium Univ Libre Bruxelles Brussels Belgium Univ Ghent Ghent Belgium Catholic Univ Louvain Louvain La Neuve Belgium Ctr Brasileiro Pesquisas Fis Rio De Janeiro Brazil Univ Estado Rio De Janeiro Rio De Janeiro Brazil Univ Fed ABC Univ Estadual Paulista Sao Paulo Brazil Bulgarian Acad Sci Inst Nucl Res & Nucl Energy Sofia Bulgaria Univ Sofia Sofia Bulgaria Univ Tarapaca Inst Alta Invest Casilla 7 D Arica Chile Beihang Univ Beijing Peoples R China Tsinghua Univ Dept Phys Beijing Peoples R China Inst High Energy Phys Beijing Peoples R China Peking Univ State Key Lab Nucl Phys & Technol Beijing Peoples R China Sun Yat Sen Univ Guangzhou Peoples R China Univ Sci & Technol China Hefei Peoples R China Fudan Univ Inst Modern Phys Shanghai Peoples R China Fudan Univ Key Lab Nucl Phys & Ion Beam Applicat MOE Shanghai Peoples R China Zhejiang Univ Hangzhou Zhejiang Peoples R China Univ Los Andes Bogota Colombia Univ Antioquia Medellin Colombia Univ Split Fac Elect Engn Mech Engn & Naval Architecture Split Croatia Univ Split Fac Sci Split Croatia Inst Rudjer Boskov Zagreb Croatia Univ Cyprus Nicosia Cyprus Charles Univ Prague Prague Czech Republic Escuela Politec Nacl Quito Ecuador Univ San Francisco Quito Quito Ecuador Acad Sci Res & Technol Arab Republ Egypt Egyptian Network High Energy Phys Cairo Egypt Fayoum Univ Ctr High Energy Phys CHEP FU Al Fayyum Egypt NICPB Tallinn Estonia Univ Helsinki Dept Phys Helsinki Finland Helsinki Inst Phys Helsinki Finland Lappeenranta Lahti Univ Technol Lappeenranta Finland Univ Paris Saclay IRFU CEA Gif Sur Yvette France Inst Polytech Paris Ecole Polytech CNRS Lab Leprince RinguetIN2P3 Palaiseau France Univ Strasbourg CNRS IPHC UMR 7178 Strasbourg France Inst Phys 2 Infinis Lyon IP2I Villeurbanne France Georgian Tech Univ Tbilisi Georgia Rhein Westfal TH Aa

A search for Higgs boson pair (HH) production in association with a vector boson V (W or Z boson) is presented. The search is based on proton-proton collision data at a center-of-mass energy of 13 TeV, collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 138 fb(-1). Both hadronic and leptonic decays of V bosons are used. The leptons considered are electrons, muons, and neutrinos. The HH production is searched for in the b (b) over barb (b) over bar decay channel. An observed (expected) upper limit at 95% confidence level of VHH production cross section is set at 294 (124) times the standard model prediction. Constraints are also set on the modifiers of the Higgs boson trilinear self-coupling, k(lambda), assuming k(2V) = 1, and vice versa on the coupling of two Higgs bosons with two vector bosons, k(2V). The observed (expected) 95% confidence intervals of these coupling modifiers are -37.7 < k(lambda) < 37.2 (-30.1 < k(lambda) < 28.9) and -12.2 < k(2V) < 13.5 (-7.2 < k(2V) < 8.9), respectively.

关键词： Hadron-Hadron Scattering Higgs Physics Vector Boson Production

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Measurement of isotopic separation of argon with the prototype of the cryogenic distillation plant Aria for dark matter searches

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EUROPEAN PHYSICAL JOURNAL C 2023年第5期83卷 453页

作者： Aaron, E. Agnes, P. Ahmad, I. Albergo, S. Albuquerque, I. F. M. Alexander, T. Alton, A. K. Amaudruz, P. Atzori Corona, M. Ave, M. Avetisov, I. Ch. Azzolini, O. Back, H. O. Balmforth, Z. Barrado, A. Barrillon, P. Basco, A. Batignani, G. Bocci, V. Bonivento, W. M. Bottino, B. Boulay, M. G. Busto, J. Cadeddu, M. Caminata, A. Canci, N. Capra, A. Caprioli, S. Caravati, M. Cargioli, N. Carlini, M. Castello, P. Cavalcante, P. Cavuoti, S. Cebrian, S. Cela Ruiz, J. M. Chashin, S. Chepurnov, A. Chyhyrynets, E. Cifarelli, L. Cintas, D. Citterio, M. Cleveland, B. Cocco, V. Conde Vilda, E. Consiglio, L. Copello, S. Covone, G. Czubak, M. D'Aniello, M. D'Auria, S. Da Rocha Rolo, M. D. Davini, S. De Cecco, S. De Guido, G. De Gruttola, D. De Pasquale, S. De Rosa, G. Dellacasa, G. Derbin, A. V. Devoto, A. Di Capua, F. Di Noto, L. Di Stefano, P. Dolganov, G. Dordei, F. Ellingwood, E. Erjavec, T. Farenzena, S. Fernandez Diaz, M. Fiorillo, G. Franchini, P. Franco, D. Funicello, N. Gabriele, F. Gahan, D. Galbiati, C. Gallina, G. Gallus, G. Garbini, M. Garcia Abia, P. Gendotti, A. Ghiano, C. Giganti, C. Giovanetti, G. K. Goicoechea Casanueva, V. Gola, A. Grauso, G. Grilli di Cortona, G. Grobov, A. Gromov, M. Guan, M. Guerzoni, M. Gulino, M. Guo, C. Hackett, B. R. Hallin, A. L. Hamer, A. Haranczyk, M. Hessel, T. Hill, S. Horikawa, S. Hubaut, F. Hucker, J. Hugues, T. Ianni, An. Ippolito, V. Jillings, C. Jois, S. Kachru, P. Kemp, A. A. Kendziora, C. L. Kimura, M. Kochanek, I. Kondo, K. Korga, G. Koulosousas, S. Kubankin, A. Kuss, M. Kuzniak, M. La Commara, M. Lai, M. Lami, N. Le Guirriec, E. Leason, E. Leoni, A. Lidey, L. Lippi, F. Lissia, M. Luzzi, L. Lychagina, O. Maccioni, N. Macfadyen, O. Machulin, I. N. Manecki, S. Manthos, I. Mapelli, L. Margotti, A. Mari, S. M. Mariani, C. Maricic, J. Marini, A. Martinez, M. Martoff, C. J. Mascia, M. Masoni, A. Matteucci, G. Mavrokoridis, K. Maxia, C. McDonald, A. B. Messina, A. Milincic, R. Mitra, A. Moharana, A. Moioli, S. Monroe, J. Moretti, E. Morrocchi, M. Mroz, T. Muratova, V. N. Muscas, C. M Univ Houston Dept Phys Houston TX 77204 USA INFN Catania I-95121 Catania Italy Univ Catania I-95124 Catania Italy Univ Sao Paulo Inst Fis BR-05508090 Sao Paulo Brazil Pacific Northwest Natl Lab Richland WA 99352 USA Univ Bologna Dept Phys & Astron I-40126 Bologna Italy INFN Bologna I-40126 Bologna Italy Augustana Univ Phys Dept Sioux Falls SD 57197 USA TRIUMF 4004 Wesbrook Mall Vancouver BC V6T 2A3 Canada Mendeleev Univ Chem Technol Moscow 125047 Russia INFN Lab Nazl Legnaro I-35020 Legnaro Padova Italy Royal Holloway Univ London Dept Phys Egham TW20 0EX England Lomonosov Moscow State Univ Skobeltsyn Inst Nucl Phys Moscow 119234 Russia CIEMAT Ctr Invest Energet Medioambientales & Tecn Madrid 28040 Spain Aix Marseille Univ Ctr Phys Particules Marseille CNRS IN2P3 CPPM Marseille France INFN Napoli I-80126 Naples Italy INFN Pisa I-56127 Pisa Italy Univ Pisa Phys Dept I-56127 Pisa Italy Budker Inst Nucl Phys Novosibirsk 630090 Russia Novosibirsk State Univ Novosibirsk 630090 Russia INFN Cagliari I-09042 Cagliari Italy Univ Genoa Phys Dept I-16146 Genoa Italy INFN Genova I-16146 Genoa Italy Carleton Univ Dept Phys Ottawa ON K1S 5B6 Canada CERN European Org Nucl Res CH-1211 Geneva 23 Switzerland INFN Roma Tre I-00146 Rome Italy Univ Roma Tre Math & Phys Dept I-00146 Rome Italy Univ Cagliari Phys Dept I-09042 Cagliari Italy INFN Lab Nazl Gran Sasso I-67100 Assergi AQ Italy Gran Sasso Sci Inst I-67100 Laquila Italy Museo Stor Fis I-00184 Rome Italy Ctr Studi Ric Enrico Fermi I-00184 Rome Italy Univ Cagliari Dept Elect & Elect Engn I-09123 Cagliari Italy Univ Federico II Napoli Phys Dept I-80126 Naples Italy Univ Federico II Napoli Dept Strutture Ingn & Architettura I-80131 Naples Italy INAF Osservatorio Astron Capodimonte I-80131 Naples Italy Univ Zaragoza Ctr Astroparticulas & Fis Altas Energias Zaragoza 50009 Spain Jagiellonian Univ M Smoluchowski Inst Phys PL-30348 Krakow Poland INFN Milano I-20133 Milan Italy INFN

The Aria cryogenic distillation plant, located in Sardinia, Italy, is a key component of the DarkSide-20k experimental program for WIMP dark matter searches at the INFN laboratori Nazionali del Gran Sasso, Italy. Aria is designed to purify the argon, extracted from underground wells in Colorado, USA, and used as the DarkSide-20k target material, to detector-grade quality. In this paper, we report the first measurement of argon isotopic separation by distillation with the 26 m tall Aria prototype. We discuss the measurement of the operating parameters of the column and the observation of the simultaneous separation of the three stable argon isotopes: Ar-36, Ar-38, and Ar-40. We also provide a detailed comparison of the experimental results with commercial process simulation software. This measurement of isotopic separation of argon is a significant achievement for the project, building on the success of the initial demonstration of isotopic separation of nitrogen using the same equipment in 2019.

关键词： Distillation

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Measurement of differential ZZ plus jets production cross sections in pp collisions at √s=13 TeV

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JOURNAL OF HIGH ENERGY PHYSICS 2024年第10期2024卷 209页

作者： Hayrapetyan, A. Tumasyan, A. Adam, W. Andrejkovic, J. W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. Del Valle, A. Escalante Hussain, P. S. Jeitler, M. Krammer, N. Liko, D. Mikulec, I. Schieck, J. Schoefbeck, R. Schwarz, D. Sonawane, M. Templ, S. Waltenberger, W. Wulz, C-E Darwish, M. R. Janssen, T. Van Mechelen, P. Bols, E. S. D'Hondt, J. Dansana, S. De Moor, A. Delcourt, M. El Faham, H. Lowette, S. Makarenko, I. Mueller, D. Sahasransu, A. R. Tavernier, S. Tytgat, M. Van Putte, S. Vannerom, D. Clerbaux, B. De Lentdecker, G. Favart, L. Hohov, D. Jaramillo, J. Khalilzadeh, A. Lee, K. Mahdavikhorrami, M. Malara, A. Paredes, S. Petre, L. Postiau, N. Thomas, L. Vanden Bemden, M. Vander Velde, C. Vanlaer, P. De Coen, M. Dobur, D. Hong, Y. Knolle, J. Lambrecht, L. Mestdach, G. Rendon, C. Samalan, A. Skovpen, K. Van Den Bossche, N. Wezenbeek, L. Benecke, A. Bruno, G. Caputo, C. Delaere, C. Donertas, I. S. Giammanco, A. Jaffel, K. Jain, Sa. Lemaitre, V. Lidrych, J. Mastrapasqua, P. Mondal, K. Tran, T. T. Wertz, S. Alves, G. A. Coelho, E. Hensel, C. Menezes De Oliveira, T. Moraes, A. Rebello Teles, P. Soeiro, M. Alda Junior, W. L. Alves Gallo Pereira, M. Barroso Ferreira Filho, M. Brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, E. M. Da Silveira, G. G. De Jesus Damiao, D. Fonseca De Souza, S. Martins, J. Mora Herrera, C. Mota Amarilo, K. Mundim, L. Nogima, H. Santoro, A. Silva Do Amaral, S. M. Sznajder, A. Thiel, M. Vilela Pereira, A. Bernardes, C. A. Calligaris, L. Fernandez Perez Tomei, T. R. Gregores, E. M. Mercadante, P. G. Novaes, S. F. Orzari, B. Padula, Sandra S. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Shopova, M. Sultanov, G. Dimitrov, A. Ivanov, T. Litov, L. Pavlov, B. Petkov, P. Petrov, A. Shumka, E. Keshri, S. Thakur, S. Cheng, T. Guo, Q. Javaid, T. Mittal, M. Yuan, L. Bauer, G. Hu, Z. Liu, J. Yi, K. Chen, G. M. Chen, H. S. Chen, M. Iemmi, F. Jiang, C. H. Kapoor, A. Liao, H. Liu, Z-A Monti, F. Shahzad, M. A. Sharma, R. Song, J. N. Tao, J. Wang, C. Wang, J. W Yerevan Phys Inst Yerevan Armenia Inst Hochenergiephys Vienna Austria Univ Antwerp Antwerp Belgium Vrije Univ Brussel Brussels Belgium Univ Libre Bruxelles Brussels Belgium Univ Ghent Ghent Belgium Catholic Univ Louvain Louvain La Neuve Belgium Ctr Brasileiro Pesquisas Fis Rio De Janeiro Brazil Univ Estado Rio de Janeiro Rio De Janeiro Brazil Univ Fed Sao Paulo Univ Estadual Paulista Sao Paulo Brazil Bulgarian Acad Sci Inst Nucl Res & Nucl Energy Sofia Bulgaria Univ Sofia Sofia Bulgaria Univ Tarapaca Inst Alta Invest Casilla 7 D Arica Chile Beihang Univ Beijing Peoples R China Tsinghua Univ Dept Phys Beijing Peoples R China Inst High Energy Phys Beijing Peoples R China Peking Univ State Key Lab Nucl Phys & Technol Beijing Peoples R China Sun Yat Sen Univ Guangzhou Peoples R China Univ Sci & Technol China Hefei Peoples R China Fudan Univ Inst Modern Phys Shanghai Peoples R China Fudan Univ Key Lab Nucl Phys & Ionbeam Applicat MOE Shanghai Peoples R China Zhejiang Univ Hangzhou Zhejiang Peoples R China Univ Los Andes Bogota Colombia Univ Antioquia Medellin Colombia Univ Split Fac Elect Engn Mech Engn & Naval Architecture Split Croatia Univ Split Fac Sci Split Croatia Inst Rudjer Boskovic Zagreb Croatia Univ Cyprus Nicosia Cyprus Charles Univ Prague Prague Czech Republic Escuela Politec Nacl Quito Ecuador Univ San Francisco Quito Quito Ecuador Acad Sci Res & Technol Arab Republ Egypt Egyptian Network High Energy Phys Cairo Egypt Fayoum Univ Ctr High Energy Phys Al Fayyum Egypt NICPB Tallinn Estonia Univ Helsinki Dept Phys Helsinki Finland Helsinki Inst Phys Helsinki Finland Lappeenranta Lahti Univ Technol Lappeenranta Finland Univ Paris Saclay CEA IRFU Gif Sur Yvette France Ecole Polytech IN2P3 CNRS Lab Leprince RinguetInst Polytech Paris Palaiseau France Univ Strasbourg CNRS IPHC UMR 7178 Strasbourg France Inst Phys 2 Infinis Lyon IP2I Villeurbanne France Georgian Tech Univ Tbilisi Georgia Rhein Westfal TH Aac

Diboson production in association with jets is studied in the fully leptonic final states, pp -> (Z/gamma(*))(Z/gamma(*)) + jets -> 2l2l'+ jets, (l, l ' = e or mu) in proton-proton collisions at a center-of-mass energy of 13 TeV. The data sample corresponds to an integrated luminosity of 138 fb(-1) collected with the CMS detector at the LHC. Differential distributions and normalized differential cross sections are measured as a function of jet multiplicity, transverse momentum p(T), pseudorapidity eta, invariant mass and eta of the highest-p(T) and second-highest-p(T) jets, and as a function of invariant mass of the four-lepton system for events with various jet multiplicities. These differential cross sections are compared with theoretical predictions that mostly agree with the experimental data. However, in a few regions we observe discrepancies between the predicted and measured values. Further improvement of the predictions is required to describe the ZZ+jets production in the whole phase space.

关键词： Hadron-Hadron Scattering Vector Boson Production

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Search for a new resonance decaying into two spin-0 bosons in a final state with two photons and two bottom quarks in proton-proton collisions at √s=13 TeV

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JOURNAL OF HIGH ENERGY PHYSICS 2024年第5期2024卷 316页

作者： Tumasyan, A. Adam, W. Andrejkovic, J. W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. Del Valle, A. Escalante Hussain, P. S. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Mikulec, I. Paulitsch, P. Pitters, F. M. Schieck, J. Schoefbeck, R. Schwarz, D. Sonawane, M. Templ, S. Waltenberger, W. Wulz, C. -E. Darwish, M. R. Janssen, T. Kello, T. Sfar, H. Rejeb Van Mechelen, P. Bols, E. S. D'Hondt, J. De Moor, A. Delcourt, M. El Faham, H. Lowette, S. Moortgat, S. Morton, A. Muller, D. Sahasransu, A. R. Tavernier, S. Van Doninck, W. Van Putte, S. Vannerom, D. Clerbaux, B. De Lentdecker, G. Favart, L. Hohov, D. Jaramillo, J. Lee, K. Mahdavikhorrami, M. Makarenko, I. Malara, A. Paredes, S. Petre, L. Postiau, N. Thomas, L. Vanden Bemden, M. Vander Velde, C. Vanlaer, P. Dobur, D. Knolle, J. Lambrecht, L. Mestdach, G. Rendon, C. Samalan, A. Skovpen, K. Tytgat, M. Van Den Bossche, N. Vermassen, B. Wezenbeek, L. Benecke, A. Bruno, G. Bury, F. Caputo, C. David, P. Delaere, C. Donertas, I. S. Giammanco, A. Jaffel, K. Jain, Sa. Lemaitre, V. Mondal, K. Taliercio, A. Tran, T. T. Vischia, P. Wertz, S. Alves, G. A. Coelho, E. Hensel, C. Moraes, A. Rebello Teles, P. Alda Junior, W. L. Alves Gallo Pereira, M. Barroso Ferreira Filho, M. Brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, E. M. Da Silveira, G. G. De Jesus Damiao, D. Dos Santos Sousa, V. Fonseca De Souza, S. Martins, J. Mora Herrera, C. Mota Amarilo, K. Mundim, L. Nogima, H. Santoro, A. Silva Do Amaral, S. M. Sznajder, A. Thiel, M. Vilela Pereira, A. Bernardes, C. A. Calligaris, L. Fernandez Perez Tomei, T. R. Gregores, E. M. Mercadante, P. G. Novaes, S. F. Padula, Sandra S. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Rodozov, M. Shopova, M. Sultanov, G. Dimitrov, A. Ivanov, T. Litov, L. Pavlov, B. Petkov, P. Petrov, A. Shumka, E. Thakur, S. Cheng, T. Javaid, T. Mittal, M. Yuan, L. Ahmad, M. Bauer, G. Hu, Z. Lezki, S. Yi, K. Chen, G. M. Chen, H. S. Chen, M. Iemmi, F. Jiang, C. H. Kapoor, A. Liao, H. Liu, Z. -A. Milosevic, V. Monti Yerevan Phys Inst Yerevan Armenia Inst Hochenergiephys Vienna Austria Univ Antwerp Antwerp Belgium Vrije Univ Brussel Brussels Belgium Univ Libre Bruxelles Brussels Belgium Univ Ghent Ghent Belgium Catholic Univ Louvain Louvain Belgium Ctr Brasileiro Pesquisas Fis Rio De Janeiro Brazil Univ Estado Rio De Janeiro Rio De Janeiro Brazil Univ Fed ABC Univ Estadual Paulista Sao Paulo Brazil Bulgarian Acad Sci Inst Nucl Res & Nucl Energy Sofia Bulgaria Univ Sofia Sofia Bulgaria Univ Tarapaca Inst Alta Invest Casilla 7 D Arica Chile Beihang Univ Beijing Peoples R China Tsinghua Univ Dept Phys Beijing Peoples R China Inst High Energy Phys Beijing Peoples R China Peking Univ State Key Lab Nucl Phys & Technol Beijing Peoples R China Sun Yat Sen Univ Guangzhou Peoples R China Univ Sci & Technol China Hefei Peoples R China Fudan Univ Key Lab Nucl Phys & Ionbeam Applicat MOE Shanghai Peoples R China Fudan Univ Inst Modern Phys Shanghai Peoples R China Zhejiang Univ Hangzhou Zhejiang Peoples R China Univ Los Andes Bogota Colombia Univ Antioquia Medellin Colombia Univ Split Fac Elect Engn Mech Engn & Naval Architecture Split Croatia Univ Split Fac Sci Split Croatia Inst Rudjer Boskov Zagreb Croatia Univ Cyprus Nicosia Cyprus Charles Univ Prague Prague Czech Republic Escuela Politec Nacl Quito Ecuador Univ San Francisco De Quito Quito Ecuador Acad Sci Res & Technol Arab Republ Egypt Egyptian Network High Energy Phys Cairo Egypt Fayoum Univ Ctr High Energy Phys CHEP FU Al Fayyum Egypt NICPB Tallinn Estonia Univ Helsinki Dept Phys Helsinki Finland Helsinki Inst Phys Helsinki Finland Lappeenranta Lahti Univ Technol Lappeenranta Finland Univ Paris Saclay CEA IRFU Gif Sur Yvette France Inst Polytechn Paris Ecole Polytechn Lab Leprince Ringuet CNRSIN2P3 Palaiseau France Univ Strasbourg CNRS IPHC UMR 7178 Strasbourg France Inst Phys 2 Infinis Lyon IP2I Villeurbanne France Georgian Tech Univ Tbilisi Georgia Rhein Westfal TH Aachen

A search for a new boson X is presented using CERN LHC proton-proton collision data collected by the CMS experiment at root s = 13 TeV in 2016-2018, and corresponding to an integrated luminosity of 138 fb(-1). The resonance X decays into either a pair of Higgs bosons HH of mass 125 GeV or an H and a new spin-0 boson Y. One H subsequently decays to a pair of photons, and the second H or Y, to a pair of bottom quarks. The explored mass ranges of X are 260-1000 GeV and 300-1000 GeV, for decays to HH and to HY, respectively, with the Y mass range being 90-800 GeV. For a spin-0 X hypothesis, the 95% confidence level upper limit on the product of its production cross section and decay branching fraction is observed to be within 0.90-0.04 fb, depending on the masses of X and Y. The largest deviation from the background-only hypothesis with a local (global) significance of 3.8 (below 2.8) standard deviations is observed for X and Y masses of 650 and 90 GeV, respectively. The limits are interpreted using several models of new physics.

关键词： B Physics Hadron-Hadron Scattering Higgs Physics Photon Production

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Search for new physics in high-mass diphoton events from proton-proton collisions at √s=13 TeV

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JOURNAL OF HIGH ENERGY PHYSICS 2024年第8期2024卷 215页

作者： Hayrapetyan, A. Tumasyan, A. Adam, W. Andrejkovic, J. W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. Hussain, P. S. Jeitler, M. Krammer, N. Li, A. Liko, D. Mikulec, I. Schieck, J. Schoefbeck, R. Schwarz, D. Sonawane, M. Templ, S. Waltenberger, W. Wulz, C. -E. Darwish, M. R. Janssen, T. Van Laer, T. Van Mechelen, P. Breugelmans, N. D'Hondt, J. Dansana, S. De Moor, A. Delcourt, M. Heyen, F. Lowette, S. Makarenko, I. Mueller, D. Tavernier, S. Tytgat, M. Van Onsem, G. P. Van Putte, S. Vannerom, D. Bilin, B. Clerbaux, B. Das, A. K. De Lentdecker, G. Evard, H. Favart, L. Gianneios, P. Jaramillo, J. Khalilzadeh, A. Khan, F. A. Lee, K. Mahdavikhorrami, M. Malara, A. Paredes, S. Shahzad, M. A. Thomas, L. Vanden Bemden, M. Vander Velde, C. Vanlaer, P. De Coen, M. Dobur, D. Gokbulut, G. Hong, Y. Knolle, J. Lambrecht, L. Marckx, D. Amarilo, K. Mota Samalan, A. Skovpen, K. Van den Bossche, N. van der Linden, J. Wezenbeek, L. Benecke, A. Bethani, A. Bruno, G. Caputo, C. De Jeneret, J. De Favereau Delaere, C. Donertas, I. S. Giammanco, A. Guzel, A. O. Jain, Sa. Lemaitre, V. Lidrych, J. Mastrapasqua, P. Tran, T. T. Wertz, S. Alves, G. A. Alves Gallo Pereira, M. Coelho, E. Correia Silva, G. Hensel, C. Menezes De Oliveira, T. Moraes, A. Rebello Teles, P. Soeiro, M. Vilela Pereira, A. Alda Junior, W. L. Barroso Ferreira Filho, M. Brandao Malbouisson, H. Carvalho, W. Chinellato, J. Da Costa, E. M. Da Silveira, G. G. De Jesus Damiao, D. Fonseca De Souza, S. Gomes De Souza, R. Macedo, M. Martins, J. Mora Herrera, C. Mundim, L. Nogima, H. Pinheiro, J. P. Santoro, A. Sznajder, A. Thiel, M. Bernardes, C. A. Calligaris, L. Fernandez Perez Tomei, T. R. Gregores, E. M. Maietto Silverio, I. Mercadante, P. G. Novaes, S. F. Orzari, B. Padula, Sandra S. Aleksandrov, A. Antchev, G. Hadjiiska, R. Iaydjiev, P. Misheva, M. Shopova, M. Sultanov, G. Dimitrov, A. Litov, L. Pavlov, B. Petkov, P. Petrov, A. Shumka, E. Keshri, S. Thakur, S. Cheng, T. Javaid, T. Yuan, L. Hu, Z. Liang, Z. Liu, J. Yi, K. Chen, G. M. Chen, H. S. Chen, M. Iemmi, Yerevan Phys Inst Yerevan Armenia Inst Hochenergiephys Vienna Austria Univ Antwerp Antwerp Belgium Vrije Univ Brussel Brussels Belgium Univ Libre Bruxelles Brussels Belgium Univ Ghent Ghent Belgium Catholic Univ Louvain Louvain La Neuve Belgium Ctr Brasileiro Pesquisas Fis Rio De Janeiro Brazil Univ Estado Rio de Janeiro Rio De Janeiro Brazil Univ Fed ABC Univ Estadual Paulista Sao Paulo Brazil Bulgarian Acad Sci Inst Nucl Res & Nucl Energy Sofia Bulgaria Univ Sofia Sofia Bulgaria Univ Tarapaca Inst Alta Invest Casilla 7 D Arica Chile Beihang Univ Beijing Peoples R China Tsinghua Univ Dept Phys Beijing Peoples R China Inst High Energy Phys Beijing Peoples R China Peking Univ State Key Lab Nucl Phys & Technol Beijing Peoples R China South China Normal Univ Guangdong Prov Key Lab Nucl Sci Guangzhou Peoples R China South China Normal Univ Guangdong Hong Kong Joint Lab Quantum Matter Guangzhou Peoples R China Sun Yat Sen Univ Guangzhou Peoples R China Univ Sci & Technol China Hefei Peoples R China Nanjing Normal Univ Nanjing Peoples R China Fudan Univ Inst Modern Phys Shanghai Peoples R China Fudan Univ Key Lab Nucl Phys & Ion Beam Applicat MOE Shanghai Peoples R China Zhejiang Univ Hangzhou Zhejiang Peoples R China Univ Los Andes Bogota Colombia Univ Antioquia Medellin Colombia Univ Split Fac Elect Engn Mech Engn & Naval Architecture Split Croatia Univ Split Fac Sci Split Croatia Inst Rudjer Boskovic Zagreb Croatia Univ Cyprus Nicosia Cyprus Charles Univ Prague Prague Czech Republic Univ San Francisco Quito Quito Ecuador Acad Sci Res & Technol Arab Republ Egypt Egyptian Network High Energy Phys Cairo Egypt Fayoum Univ Ctr High Energy Phys CHEP FU Al Fayyum Egypt NICPB Tallinn Estonia Univ Helsinki Dept Phys Helsinki Finland Helsinki Inst Phys Helsinki Finland Lappeenranta Lahti Univ Technol Lappeenranta Finland Univ Paris Saclay CEA IRFU Gif Sur Yvette France Inst Polytech Paris Ecole Polytech Lab Leprince Ringuet CN

Results are presented from a search for new physics in high-mass diphoton events from proton-proton collisions at root s = 13TeV. The data set was collected in 2016-2018 with the CMS detector at the LHC and corresponds to an integrated luminosity of 138 fb(-1). Events with a diphoton invariant mass greater than 500 GeV are considered. Two different techniques are used to predict the standard model backgrounds: parametric fits to the smoothly-falling background and a first-principles calculation of the standard model diphoton spectrum at next-to-next-to-leading order in perturbative quantum chromodynamics calculations. The first technique is sensitive to resonant excesses while the second technique can identify broad differences in the invariant mass shape. The data are used to constrain the production of heavy Higgs bosons, Randall-Sundrum gravitons, the large extra dimensions model of Arkani-Hamed, Dimopoulos, and Dvali (ADD), and the continuum clockwork mechanism. No statistically significant excess is observed. The present results are the strongest limits to date on ADD extra dimensions and RS gravitons with a coupling parameter greater than 0.1.

关键词： Beyond Standard Model Hadron-Hadron Scattering Photon Production

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