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Ob.e.vation of the Production of Three Massive Gauge bosons at s=13 TeV

Physical Review Letters 2020年第15期125卷 151802-151802页

作者： A. M. sirunyan A. Tumasyan W. Adam F. Ambrogi T. bergauer M. Dragicevic J. erö A. escalante Del Valle R. Frühwirth M. Jeitler N. Krammer L. Lechner D. Liko T. Madlener I. Mikulec F. M. Pitters N. Rad J. schieck R. schöfbeck M. spanring s. Templ W. Waltenberger C.-e. Wulz M. Zarucki V. Chekhovsky A. Litomin V. Makarenko J. suarez Gonzalez M. R. Darwish e. A. De Wolf D. Di Croce X. Janssen T. Kello A. Lelek M. Pieters H. Rejeb sfar H. Van Haevermaet P. Van Mechelen s. Van Putte N. Van Remortel F. b.e.man e. s. bols s. s. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi s. Lowette I. Marchesini s. Moortgat A. Morton Q. Python s. Tavernier W. Van Doninck P. Van Mulders D. beghin b. bilin b. Clerbaux G. De Lentdecker H. Delannoy b. Dorney L. Favart A. Grebenyuk A. K. Kalsi I. Makarenko L. Moureaux L. Pétré A. Popov N. Postiau e. starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom L. Wezenb.e. T. Cornelis D. Dobur M. Gruchala I. Khvastunov M. Niedziela C. Roskas K. skovpen M. Tytgat W. Verbeke b. Vermassen M. Vit G. bruno F. bury C. Caputo P. David C. Delaere M. Delcourt I. s. Donertas A. Giammanco V. Lemaitre K. Mondal J. Prisciandaro A. Taliercio M. Teklishyn P. Vischia s. Wuyckens J. Zobec G. A. Alves G. Correia silva C. Hensel A. Moraes W. L. Aldá Júnior e. belchior batista Das Chagas H. brandao Malbouisson W. Carvalho J. Chinellato e. Coelho e. M. Da Costa G. G. Da silveira D. De Jesus Damiao s. Fonseca De souza J. Martins D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima P. Rebello Teles L. J. sanchez Rosas A. santoro s. M. silva Do Amaral A. sznajder M. Thiel e. J. Tonelli Manganote F. Torres Da silva De Araujo A. Vilela Pereira C. A. bernardes L. Calligaris T. R. Fernandez Perez Tomei e. M. Gregores D. s. Lemos P. G. Mercadante s. F. Novaes sandra s. Padula A. Aleksandrov G. Antchev I. Atanasov R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. shopova G. sultanov M. bonchev A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov A. Petrov W. Fang Q. Guo H. Wang L. Yuan M. Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista São Paulo Brazil Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China University of Illinois at Chicago (UIC) Chicago Illinois USA Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Institute of High Energy Physics Beijing China Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA Sun Yat-Sen University Guangzhou China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) - Fudan University Shanghai China Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Energy Phys

The first ob.e.vation is reported of the combined production of three massive gauge bosons (VVV with V=W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV. The analysis is based on a data sample recorded by the CMs experiment at the CeRN LHC corresponding to an integrated luminosity of 137 fb−1. The searches for individual WWW, WWZ, WZZ, and ZZZ production are performed in final states with three, four, five, and six leptons (electrons or muons), or with two same-sign leptons plus one or two jets. The ob.e.ved (expected) significance of the combined VVV production signal is 5.7 (5.9) standard deviations and the corresponding measured cross section relative to the standard model prediction is 1.02−0.23+0.26. The significances of the individual WWW and WWZ production are 3.3 and 3.4 standard deviations, respectively. Measured production cross sections for the individual triboson processes are also reported.

关键词： W & Z bosons Hadron colliders

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Ob.e.vation of the bs0→X(3872)ϕ Decay

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Physical Review Letters 2020年第15期125卷 152001-152001页

作者： A. M. sirunyan A. Tumasyan W. Adam F. Ambrogi T. bergauer M. Dragicevic J. erö A. escalante Del Valle R. Frühwirth M. Jeitler N. Krammer L. Lechner D. Liko T. Madlener I. Mikulec F. M. Pitters N. Rad J. schieck R. schöfbeck M. spanring s. Templ W. Waltenberger C.-e. Wulz M. Zarucki V. Chekhovsky A. Litomin V. Makarenko J. suarez Gonzalez M. R. Darwish e. A. De Wolf D. Di Croce X. Janssen T. Kello A. Lelek M. Pieters H. Rejeb sfar H. Van Haevermaet P. Van Mechelen s. Van Putte N. Van Remortel F. b.e.man e. s. bols s. s. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi s. Lowette I. Marchesini s. Moortgat A. Morton Q. Python s. Tavernier W. Van Doninck P. Van Mulders D. beghin b. bilin b. Clerbaux G. De Lentdecker H. Delannoy b. Dorney L. Favart A. Grebenyuk A. K. Kalsi I. Makarenko L. Moureaux L. Pétré A. Popov N. Postiau e. starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom L. Wezenb.e. T. Cornelis D. Dobur M. Gruchala I. Khvastunov M. Niedziela C. Roskas K. skovpen M. Tytgat W. Verbeke b. Vermassen M. Vit G. bruno F. bury C. Caputo P. David C. Delaere M. Delcourt I. s. Donertas A. Giammanco V. Lemaitre K. Mondal J. Prisciandaro A. Taliercio M. Teklishyn P. Vischia s. Wuyckens J. Zobec G. A. Alves G. Correia silva C. Hensel A. Moraes W. L. Aldá Júnior e. belchior batista Das Chagas H. brandao Malbouisson W. Carvalho J. Chinellato e. Coelho e. M. Da Costa G. G. Da silveira D. De Jesus Damiao s. Fonseca De souza J. Martins D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima P. Rebello Teles L. J. sanchez Rosas A. santoro s. M. silva Do Amaral A. sznajder M. Thiel e. J. Tonelli Manganote F. Torres Da silva De Araujo A. Vilela Pereira C. A. bernardes L. Calligaris T. R. Fernandez Perez Tomei e. M. Gregores D. s. Lemos P. G. Mercadante s. F. Novaes sandra s. Padula A. Aleksandrov G. Antchev I. Atanasov R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. shopova G. sultanov M. bonchev A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov A. Petrov W. Fang Q. Guo H. Wang L. Yuan M. Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista São Paulo Brazil Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China Rutgers The State University of New Jersey Piscataway New Jersey USA Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Institute of High Energy Physics Beijing China Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA Sun Yat-Sen University Guangzhou China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE)—Fudan University Shanghai China Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Ener

Using a data sample of proton-proton collisions at s=13 TeV, corresponding to an integrated luminosity of 140 fb−1 collected by the CMs experiment in 2016–2018, the bs0→X(3872)ϕ decay is ob.e.ved. Decays into J/ψπ+π− and K+K− are used to reconstruct, respectively, the X(3872) and ϕ. The ratio of the product of branching fractions b[bs0→X(3872)ϕ]b[X(3872)→J/ψπ+π−] to the product b[bs0→ψ(2s)ϕ]b[ψ(2s)→J/ψπ+π−] is measured to be [2.21±0.29(stat)±0.17(syst)]%. The ratio b[bs0→X(3872)ϕ]/b[b0→X(3872)K0] is found to be consistent with one, while the ratio b[bs0→X(3872)ϕ]/b[b+→X(3872)K+] is two times smaller. This suggests a difference in the production dynamics of the X(3872) in b0 and bs0 meson decays compared to b+. The reported ob.e.vation may shed new light on the nature of the X(3872) particle.

关键词： branching fraction bottom quark strange quark Hadron colliders

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evidence for Top Quark Production in Nucleus-Nucleus Collisions

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Physical Review Letters 2020年第22期125卷 222001-222001页

作者： A. M. sirunyan A. Tumasyan W. Adam F. Ambrogi T. bergauer M. Dragicevic J. erö A. escalante Del Valle R. Frühwirth M. Jeitler N. Krammer L. Lechner D. Liko T. Madlener I. Mikulec N. Rad J. schieck R. schöfbeck M. spanring s. Templ W. Waltenberger C.-e. Wulz M. Zarucki V. Chekhovsky A. Litomin V. Makarenko J. suarez Gonzalez M. R. Darwish e. A. De Wolf D. Di Croce X. Janssen T. Kello A. Lelek M. Pieters H. Rejeb sfar H. Van Haevermaet P. Van Mechelen s. Van Putte N. Van Remortel F. b.e.man e. s. bols s. s. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi s. Lowette I. Marchesini s. Moortgat Q. Python s. Tavernier W. Van Doninck P. Van Mulders D. beghin b. bilin b. Clerbaux G. De Lentdecker H. Delannoy b. Dorney L. Favart A. Grebenyuk A. K. Kalsi I. Makarenko L. Moureaux L. Pétré A. Popov N. Postiau e. starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom L. Wezenb.e. T. Cornelis D. Dobur I. Khvastunov M. Niedziela C. Roskas K. skovpen M. Tytgat W. Verbeke b. Vermassen M. Vit G. bruno F. bury C. Caputo P. David C. Delaere M. Delcourt I. s. Donertas A. Giammanco V. Lemaitre J. Prisciandaro A. saggio A. Taliercio M. Teklishyn P. Vischia s. Wuyckens J. Zobec G. A. Alves G. Correia silva C. Hensel A. Moraes W. L. Aldá Júnior e. belchior batista Das Chagas W. Carvalho J. Chinellato e. Coelho e. M. Da Costa G. G. Da silveira D. De Jesus Damiao s. Fonseca De souza H. Malbouisson J. Martins D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima P. Rebello Teles L. J. sanchez Rosas A. santoro s. M. silva Do Amaral A. sznajder M. Thiel e. J. Tonelli Manganote F. Torres Da silva De Araujo A. Vilela Pereira C. A. bernardes L. Calligaris T. R. Fernandez Perez Tomei e. M. Gregores D. s. Lemos P. G. Mercadante s. F. Novaes sandra s. Padula A. Aleksandrov G. Antchev I. Atanasov R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. shopova G. sultanov M. bonchev A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov A. Petrov W. Fang Q. Guo H. Wang L. Yuan M. Ahmad Z. Hu Y. Wang e. Chapon G. M. Chen H. Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista São Paulo Brazil Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China University of Illinois at Chicago (UIC) Chicago Illinois USA Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Institute of High Energy Physics Beijing China Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA Sun Yat-Sen University Guangzhou China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE)—Fudan University Shanghai China Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Energy Physic

Ultrarelativistic heavy ion collisions recreate in the laboratory the thermodynamical conditions prevailing in the early universe up to 10−6 sec, thereby allowing the study of the quark-gluon plasma (QGP), a state of quantum chromodynamics (QCD) matter with deconfined partons. The top quark, the heaviest elementary particle known, is accessib.e.in nucleus-nucleus collisions at the CeRN LHC, and constitutes a novel probe of the QGP. Here, we report the first evidence for the production of top quarks in nucleus-nucleus collisions, using lead-lead collision data at a nucleon-nucleon center-of-mass energy of 5.02 TeV recorded by the CMs experiment. Two methods are used to measure the cross section for top quark pair production (σtt¯) via the selection of charged leptons (electrons or muons) and bottom quarks. One method relies on the leptonic information alone, and the second one exploits, in addition, the presence of bottom quarks. The measured cross sections, σtt¯=2.54−0.74+0.84 and 2.03−0.64+0.71 μb, respectively, are compatib.e.with expectations from scaled proton-proton data and QCD predictions.

关键词： Relativistic heavy-ion collisions Top quark Hadron colliders

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Measurement of bc(2s)+ and bc*(2s)+ cross section ratios in proton-proton collisions at s=13 TeV

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Physical Review D 2020年第9期102卷 092007-092007页

作者： A. M. sirunyan A. Tumasyan W. Adam F. Ambrogi T. bergauer M. Dragicevic J. erö A. escalante Del Valle R. Frühwirth M. Jeitler N. Krammer L. Lechner D. Liko T. Madlener I. Mikulec F. M. Pitters N. Rad J. schieck R. schöfbeck M. spanring s. Templ W. Waltenberger C.-e. Wulz M. Zarucki V. Chekhovsky A. Litomin V. Makarenko J. suarez Gonzalez M. R. Darwish e. A. De Wolf D. Di Croce X. Janssen T. Kello A. Lelek M. Pieters H. Rejeb sfar H. Van Haevermaet P. Van Mechelen s. Van Putte N. Van Remortel F. b.e.man e. s. bols s. s. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi s. Lowette I. Marchesini s. Moortgat A. Morton Q. Python s. Tavernier W. Van Doninck P. Van Mulders D. beghin b. bilin b. Clerbaux G. De Lentdecker b. Dorney L. Favart A. Grebenyuk A. K. Kalsi I. Makarenko L. Moureaux L. Pétré A. Popov N. Postiau e. starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom L. Wezenb.e. T. Cornelis D. Dobur M. Gruchala I. Khvastunov M. Niedziela C. Roskas K. skovpen M. Tytgat W. Verbeke b. Vermassen M. Vit G. bruno F. bury C. Caputo P. David C. Delaere M. Delcourt I. s. Donertas A. Giammanco V. Lemaitre K. Mondal J. Prisciandaro A. Taliercio M. Teklishyn P. Vischia s. Wuyckens J. Zobec G. A. Alves G. Correia silva C. Hensel A. Moraes W. L. Aldá Júnior e. belchior batista Das Chagas H. brandao Malbouisson W. Carvalho J. Chinellato e. Coelho e. M. Da Costa G. G. Da silveira D. De Jesus Damiao s. Fonseca De souza J. Martins D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima P. Rebello Teles L. J. sanchez Rosas A. santoro s. M. silva Do Amaral A. sznajder M. Thiel e. J. Tonelli Manganote F. Torres Da silva De Araujo A. Vilela Pereira C. A. bernardes L. Calligaris T. R. Fernandez Perez Tomei e. M. Gregores D. s. Lemos P. G. Mercadante s. F. Novaes sandra s. Padula A. Aleksandrov G. Antchev I. Atanasov R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. shopova G. sultanov M. bonchev A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov A. Petrov W. Fang Q. Guo H. Wang L. Yuan M. Ahmad Z. Hu Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista São Paulo Brazil Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China Rutgers The State University of New Jersey Piscataway New Jersey USA Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Institute of High Energy Physics Beijing China Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA Sun Yat-Sen University Guangzhou China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE)—Fudan University Shanghai China Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Ener

The ratios of the bc(2s)+ to bc+, bc*(2s)+ to bc+, and bc*(2s)+ to bc(2s)+ production cross sections are measured in proton-proton collisions at s=13 TeV, using a data sample collected by the CMs experiment at the LHC, corresponding to an integrated luminosity of 143 fb−1. The three measurements are made in the bc+ meson phase space region defined by the transverse momentum pT>15 GeV and absolute rapidity |y|<2.4, with the excited bc(*)(2s)+ states reconstructed through the bc(*)+π+π−, followed by the bc+→J/ψπ+ and J/ψ→μ+μ− decays. The bc(2s)+ to bc+, bc*(2s)+ to bc+, and bc*(2s)+ to bc(2s)+ cross section ratios, including the unknown bc(*)(2s)+→bc(*)+π+π− branching fractions, are (3.47±0.63(stat)±0.33(syst))%, (4.69±0.71(stat)±0.56(syst))%, and 1.35±0.32(stat)±0.09(syst), respectively. None of these ratios shows a significant dependence on the pT or |y| of the bc+ meson. The normalized dipion invariant mass distributions from the decays bc(*)(2s)+→bc(*)+π+π− are also reported.

关键词： branching fraction bottom mesons Charmed mesons Hadron colliders

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Measurements of the W boson rapidity, helicity, doub.e.differential cross sections, and charge asymmetry in pp collisions at s=13 TeV

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Physical Review D 2020年第9期102卷 092012-092012页

作者： A. M. sirunyan A. Tumasyan W. Adam F. Ambrogi T. bergauer M. Dragicevic J. erö A. escalante Del Valle R. Frühwirth M. Jeitler N. Krammer L. Lechner D. Liko T. Madlener I. Mikulec N. Rad J. schieck R. schöfbeck M. spanring s. Templ W. Waltenberger C.-e. Wulz M. Zarucki V. Chekhovsky A. Litomin V. Makarenko J. suarez Gonzalez M. R. Darwish e. A. De Wolf D. Di Croce X. Janssen T. Kello A. Lelek M. Pieters H. Rejeb sfar H. Van Haevermaet P. Van Mechelen s. Van Putte N. Van Remortel F. b.e.man e. s. bols s. s. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi s. Lowette I. Marchesini s. Moortgat Q. Python s. Tavernier W. Van Doninck P. Van Mulders D. beghin b. bilin b. Clerbaux G. De Lentdecker H. Delannoy b. Dorney L. Favart A. Grebenyuk A. K. Kalsi I. Makarenko L. Moureaux L. Pétré A. Popov N. Postiau e. starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom L. Wezenb.e. T. Cornelis D. Dobur I. Khvastunov M. Niedziela C. Roskas K. skovpen M. Tytgat W. Verbeke b. Vermassen M. Vit G. bruno C. Caputo P. David C. Delaere M. Delcourt I. s. Donertas A. Giammanco V. Lemaitre J. Prisciandaro A. saggio A. Taliercio P. Vischia s. Wuyckens J. Zobec G. A. Alves G. Correia silva C. Hensel A. Moraes W. L. Aldá Júnior e. belchior batista Das Chagas W. Carvalho J. Chinellato e. Coelho e. M. Da Costa G. G. Da silveira D. De Jesus Damiao s. Fonseca De souza H. Malbouisson J. Martins D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima P. Rebello Teles L. J. sanchez Rosas A. santoro s. M. silva Do Amaral A. sznajder M. Thiel e. J. Tonelli Manganote F. Torres Da silva De Araujo A. Vilela Pereira C. A. bernardes L. Calligaris T. R. Fernandez Perez Tomei e. M. Gregores D. s. Lemos P. G. Mercadante s. F. Novaes sandra s. Padula A. Aleksandrov G. Antchev I. Atanasov R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. shopova G. sultanov M. bonchev A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov A. Petrov W. Fang X. Gao L. Yuan M. Ahmad Z. Hu Y. Wang e. Chapon G. M. Chen H. s. Chen M. Chen C. H. Jiang Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista São Paulo Brazil Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China National Centre for Physics Quaid-I-Azam University Islamabad Pakistan Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Institute of High Energy Physics Beijing China Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA Sun Yat-Sen University Guangzhou China Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Inst

The differential cross section and charge asymmetry for inclusive W boson production at s=13 TeV is measured for the two transverse polarization states as a function of the W boson absolute rapidity. The measurement uses events in which a W boson decays to a neutrino and either a muon or an electron. The data sample of proton-proton collisions recorded with the CMs detector at the LHC in 2016 corresponds to an integrated luminosity of 35.9 fb−1. The differential cross section and its value normalized to the total inclusive W boson production cross section are measured over the rapidity range |yW|<2.5. In addition to the total fiducial cross section, the W boson doub.e.differential cross section, d2σ/dpTℓd|ηℓ|, and the charge asymmetry are measured as functions of the charged lepton transverse momentum and pseudorapidity. The precision of these measurements is used to constrain the parton distribution functions of the proton using the next-to-leading order NNPDF3.0 set.

关键词： Higgs bosons Polarization Hadron colliders

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Measurement of the Jet Mass Distribution and Top Quark Mass in Hadronic Decays of boosted Top Quarks in pp Collisions at s=13 TeV

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Physical Review Letters 2020年第20期124卷 202001-202001页

作者： A. M. sirunyan A. Tumasyan W. Adam F. Ambrogi T. bergauer J. brandstetter M. Dragicevic J. erö A. escalante Del Valle M. Flechl R. Frühwirth M. Jeitler N. Krammer I. Krätschmer D. Liko T. Madlener I. Mikulec N. Rad J. schieck R. schöfbeck M. spanring D. spitzbart W. Waltenberger C.-e. Wulz M. Zarucki V. Drugakov V. Mossolov J. suarez Gonzalez M. R. Darwish e. A. De Wolf D. Di Croce X. Janssen A. Lelek M. Pieters H. Rejeb sfar H. Van Haevermaet P. Van Mechelen s. Van Putte N. Van Remortel F. b.e.man e. s. bols s. s. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi s. Lowette I. Marchesini s. Moortgat Q. Python K. skovpen s. Tavernier W. Van Doninck P. Van Mulders D. beghin b. bilin H. brun b. Clerbaux G. De Lentdecker H. Delannoy b. Dorney L. Favart A. Grebenyuk A. K. Kalsi A. Popov N. Postiau e. starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom T. Cornelis D. Dobur I. Khvastunov M. Niedziela C. Roskas D. Trocino M. Tytgat W. Verbeke b. Vermassen M. Vit O. bondu G. bruno C. Caputo P. David C. Delaere M. Delcourt A. Giammanco V. Lemaitre J. Prisciandaro A. saggio M. Vidal Marono P. Vischia J. Zobec F. L. Alves G. A. Alves G. Correia silva C. Hensel A. Moraes P. Rebello Teles e. belchior batista Das Chagas W. Carvalho J. Chinellato e. Coelho e. M. Da Costa G. G. Da silveira D. De Jesus Damiao C. De Oliveira Martins s. Fonseca De souza L. M. Huertas Guativa H. Malbouisson J. Martins D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima W. L. Prado Da silva L. J. sanchez Rosas A. santoro A. sznajder M. Thiel e. J. Tonelli Manganote F. Torres Da silva De Araujo A. Vilela Pereira C. A. bernardes L. Calligaris T. R. Fernandez Perez Tomei e. M. Gregores D. s. Lemos P. G. Mercadante s. F. Novaes sandra s. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. shopova G. sultanov M. bonchev A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov W. Fang X. Gao L. Yuan M. Ahmad Z. Hu Y. Wang G. M. Chen H. s. Chen M. Chen C. H. Jiang D. Leggat H. Liao Z. Liu A. Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista São Paulo Brazil Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China National Centre for Physics Quaid-I-Azam University Islamabad Pakistan Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta University of Technology Lappeenranta Finland IRFU CEA Un

A measurement is reported of the jet mass distribution in hadronic decays of boosted top quarks produced in pp collisions at s=13 TeV. The data were collected with the CMs detector at the LHC and correspond to an integrated luminosity of 35.9 fb−1. The measurement is performed in the lepton+jets channel of tt¯ events, where the lepton is an electron or muon. The products of the hadronic top quark decay t→bW→bqq¯′ are reconstructed as a single jet with transverse momentum larger than 400 GeV. The tt¯ cross section as a function of the jet mass is unfolded at the particle level and used to extract a value of the top quark mass of 172.6±2.5 GeV. A novel jet reconstruction technique is used for the first time at the LHC, which improves the precision by a factor of 3 relative to an earlier measurement. This highlights the potential of measurements using boosted top quarks, where the new technique will enab.e.future precision measurements.

关键词： Top quark Hadron colliders

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search for supersymmetry in pp collisions at s=13 TeV with 137 fb−1 in final states with a single lepton using the sum of masses of large-radius jets

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Physical Review D 2020年第5期101卷 052010-052010页

作者： A. M. sirunyan A. Tumasyan W. Adam F. Ambrogi T. bergauer M. Dragicevic J. erö A. escalante Del Valle M. Flechl R. Frühwirth M. Jeitler N. Krammer I. Krätschmer D. Liko T. Madlener I. Mikulec N. Rad J. schieck R. schöfbeck M. spanring W. Waltenberger C.-e. Wulz M. Zarucki V. Drugakov V. Mossolov J. suarez Gonzalez M. R. Darwish e. A. De Wolf D. Di Croce X. Janssen A. Lelek M. Pieters H. Rejeb sfar H. Van Haevermaet P. Van Mechelen s. Van Putte N. Van Remortel F. b.e.man e. s. bols s. s. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi s. Lowette I. Marchesini s. Moortgat Q. Python K. skovpen s. Tavernier W. Van Doninck P. Van Mulders D. beghin b. bilin b. Clerbaux G. De Lentdecker H. Delannoy b. Dorney L. Favart A. Grebenyuk A. K. Kalsi L. Moureaux A. Popov N. Postiau e. starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom T. Cornelis D. Dobur I. Khvastunov M. Niedziela C. Roskas M. Tytgat W. Verbeke b. Vermassen M. Vit O. bondu G. bruno C. Caputo P. David C. Delaere M. Delcourt A. Giammanco V. Lemaitre J. Prisciandaro A. saggio M. Vidal Marono P. Vischia J. Zobec F. L. Alves G. A. Alves G. Correia silva C. Hensel A. Moraes P. Rebello Teles e. belchior batista Das Chagas W. Carvalho J. Chinellato e. Coelho e. M. Da Costa G. G. Da silveira D. De Jesus Damiao C. De Oliveira Martins s. Fonseca De souza L. M. Huertas Guativa H. Malbouisson J. Martins D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima W. L. Prado Da silva L. J. sanchez Rosas A. santoro A. sznajder M. Thiel e. J. Tonelli Manganote F. Torres Da silva De Araujo A. Vilela Pereira C. A. bernardes L. Calligaris T. R. Fernandez Perez Tomei e. M. Gregores D. s. Lemos P. G. Mercadante s. F. Novaes sandra s. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. shopova G. sultanov M. bonchev A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov A. Petrov W. Fang X. Gao L. Yuan G. M. Chen H. s. Chen M. Chen C. H. Jiang D. Leggat H. Liao Z. Liu A. spiezia J. Tao e. Yazgan H. Zhang s. Zhang J. Zh Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista São Paulo Brazil Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA National Centre for Physics Quaid-I-Azam University Islamabad Pakistan Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta University of Technology Lappeenranta Finland IRFU CEA Un

Results are reported from a search for new physics beyond the standard model in proton-proton collisions in final states with a single lepton; multiple jets, including at least one jet tagged as originating from the hadronization of a bottom quark; and large missing transverse momentum. The search uses a sample of proton-proton collision data at s=13 TeV, corresponding to 137 fb−1, recorded by the CMs experiment at the LHC. The signal region is divided into categories characterized by the total number of jets, the number of bottom quark jets, the missing transverse momentum, and the sum of masses of large-radius jets. The ob.e.ved event yields in the signal regions are consistent with estimates of standard model backgrounds based on event yields in the control regions. The results are interpreted in the context of simplified models of supersymmetry involving gluino pair production in which each gluino decays into a top quark-antiquark pair and a stab.e. unob.e.ved neutralino, which generates missing transverse momentum in the event. scenarios with gluino masses up to about 2150 GeV are excluded at 95% confidence level (or more) for neutralino masses up to 700 GeV. The highest excluded neutralino mass is about 1250 GeV, which holds for gluino masses around 1850 GeV.

关键词： supersymmetric models Hadron colliders

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Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at s=13 TeV

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Physical Review D 2020年第3期102卷 032007-032007页

作者： A. M. sirunyan A. Tumasyan W. Adam F. Ambrogi T. bergauer J. brandstetter M. Dragicevic J. erö A. escalante Del Valle M. Flechl R. Frühwirth M. Jeitler N. Krammer I. Krätschmer D. Liko T. Madlener I. Mikulec N. Rad J. schieck R. schöfbeck M. spanring D. spitzbart W. Waltenberger C.-e. Wulz M. Zarucki V. Drugakov V. Mossolov J. suarez Gonzalez M. R. Darwish e. A. De Wolf D. Di Croce X. Janssen A. Lelek M. Pieters H. Rejeb sfar H. Van Haevermaet P. Van Mechelen s. Van Putte N. Van Remortel F. b.e.man e. s. bols s. s. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi s. Lowette I. Marchesini s. Moortgat Q. Python K. skovpen s. Tavernier W. Van Doninck P. Van Mulders D. beghin b. bilin H. brun b. Clerbaux G. De Lentdecker H. Delannoy b. Dorney L. Favart A. Grebenyuk A. K. Kalsi A. Popov N. Postiau e. starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom T. Cornelis D. Dobur I. Khvastunov M. Niedziela C. Roskas M. Tytgat W. Verbeke b. Vermassen M. Vit O. bondu G. bruno C. Caputo P. David C. Delaere M. Delcourt A. Giammanco V. Lemaitre J. Prisciandaro A. saggio M. Vidal Marono P. Vischia J. Zobec F. L. Alves G. A. Alves G. Correia silva C. Hensel A. Moraes P. Rebello Teles e. belchior batista Das Chagas W. Carvalho J. Chinellato e. Coelho e. M. Da Costa G. G. Da silveira D. De Jesus Damiao C. De Oliveira Martins s. Fonseca De souza L. M. Huertas Guativa H. Malbouisson J. Martins D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima W. L. Prado Da silva L. J. sanchez Rosas A. santoro A. sznajder M. Thiel e. J. Tonelli Manganote F. Torres Da silva De Araujo A. Vilela Pereira C. A. bernardes L. Calligaris T. R. Fernandez Perez Tomei e. M. Gregores D. s. Lemos P. G. Mercadante s. F. Novaes sandra s. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. shopova G. sultanov M. bonchev A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov W. Fang X. Gao L. Yuan G. M. Chen H. s. Chen M. Chen C. H. Jiang D. Leggat H. Liao Z. Liu A. spiezia J. Tao e. Yazgan H. Zhang Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista São Paulo Brazil Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA National Centre for Physics Quaid-I-Azam University Islamabad Pakistan Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta University of Technology Lappeenranta Finland IRFU CEA Un

Ratios of cross sections, σ(Z+c jets)/σ(Z+jets), σ(Z+b jets)/σ(Z+jets), and σ(Z+c jets)/σ(Z+b jets) in the associated production of a Z boson with at least one charm or bottom quark jet are measured in proton-proton collisions at s=13 TeV. The data sample, collected by the CMs experiment at the CeRN LHC, corresponds to an integrated luminosity of 35.9 fb−1, with a fiducial volume of pT>30 GeV and |η|<2.4 for the jets, where pT and η represent transverse momentum and pseudorapidity, respectively. The Z boson candidates come from leptonic decays into electrons or muons with pT>25 GeV and |η|<2.4, and the dilepton mass satisfies 71eV. The measured values are σ(Z+c jets)/σ(Z+jets)=0.102±0.002±0.009, σ(Z+b jets)/σ(Z+jets)=0.0633±0.0004±0.0015, and σ(Z+c jets)/σ(Z+b jets)=1.62±0.03±0.15. Results on the inclusive and differential cross section ratios as functions of jet and Z boson transverse momentum are compared with predictions from leading and next-to-leading order perturbative quantum chromodynamics calculations. These are the first measurements of the cross section ratios at 13 TeV.

关键词： bottom quark Charm quark W & Z bosons Hadron colliders

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A demonstration of improved constraints on primordial gravitational waves with delensing

arXiv

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arXiv 2020年

作者： Ade, P.A.R. Ahmed, Z. Amiri, M. Anderson, A.J. Austermann, J.e. Avva, J.s. barkats, D. Thakur, R. basu beall, J.A. bender, A.N. benson, b.A. bianchini, F. bischoff, C.A. b.e.m, L.e. bock, J.J. b.e.ish, H. bullock, e. buza, V. Carlstrom, J.e. Chang, C.L. Cheshire, J.R. Chiang, H.C. Chou, T.-L. Citron, R. Connors, J. Moran, C. Corbett Cornelison, J. Crawford, T.M. Crites, A.T. Crumrine, M. Cukierman, A. de Haan, T. Dierickx, M. Dobbs, M.A. Duband, L. everett, W. Fatigoni, s. Filippini, J.P. Fliescher, s. Gallicchio, J. George, e.M. Germaine, T.st. Goeckner-Wald, N. Goldfinger, D.C. Grayson, J. Gupta, N. Hall, G. Halpern, M. Halverson, N.W. Harrison, s. Henderson, s. Henning, J.W. Hildebrandt, s.R. Hilton, G.C. Holder, G.P. Holzapfel, W.L. Hrubes, J.D. Huang, N. Hubmayr, J. Hui, H. Irwin, K.D. Kang, J. Karkare, K.s. Karpel, e. Kefeli, s. Kernasovskiy, s.A. Knox, L. Kovac, J.M. Kuo, C.L. Lau, K. Lee, A.T. Leitch, e.M. Li, D. Lowitz, A. Manzotti, A. McMahon, J.J. Megerian, K.G. Meyer, s.s. Millea, M. Mocanu, L.M. Moncelsi, L. Montgomery, J. Nadolski, A. Namikawa, T. Natoli, T. Netterfield, C.b. Nguyen, H.T. Nibarger, J.P. Nob.e. G. Novosad, V. O’brient, R. Ogburn, R.W. Omori, Y. Padin, s. Palladino, s. Patil, s. Prouve, T. Pryke, C. Racine, b. Reichardt, C.L. Reintsema, C.D. Richter, s. Ruhl, J.e. saliwanchik, b.R. schaffer, K.K. schillaci, A. schmitt, b.L. schwarz, R. sheehy, C.D. sievers, C. smecher, G. soliman, A. stark, A.A. steinbach, b. sudiwala, R.V. Teply, G.P. Thompson, K.L. Tolan, J.e. Tucker, C. Turner, A.D. Umiltà, C. Veach, T. Vieira, J.D. Vieregg, A.G. Wandui, A. Wang, G. Weber, A.C. Whitehorn, N. Wiebe, D.V. Willmert, J. Wong, C.L. Wu, W.L. Kimmy Yang, H. Yefremenko, V. Yoon, K.W. Young, e. Yu, C. Zeng, L. Zhang, C. Cardiff University CardiffCF10 3XQ United Kingdom SLAC National Accelerator Laboratory 2575 Sand Hill Road Menlo ParkCA94025 United States Kavli Institute for Particle Astrophysics and Cosmology Stanford University 452 Lomita Mall StanfordCA94305 United States Department of Physics and Astronomy University of British Columbia VancouverBCV6T 1Z1 Canada Fermi National Accelerator Laboratory MS209 P.O. Box 500 BataviaIL60510 United States NIST Quantum Devices Group 325 Broadway Mailcode 817.03 BoulderCO80305 United States Department of Physics University of Colorado BoulderCO80309 United States Department of Physics University of California BerkeleyCA94720 United States Harvard-Smithsonian Center for Astrophysics 60 Garden Street CambridgeMA02138 United States California Institute of Technology MS 249-17 1216 E. California Blvd. PasadenaCA91125 United States High Energy Physics Division Argonne National Laboratory 9700 S. Cass Avenue ArgonneIL60439 United States Kavli Institute for Cosmological Physics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Department of Astronomy and Astrophysics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States School of Physics University of Melbourne ParkvilleVIC3010 Australia Department of Physics University of Cincinnati CincinnatiOH45221 United States Jet Propulsion Laboratory PasadenaCA91109 United States Department of Physics Harvard University CambridgeMA02138 United States Minnesota Institute for Astrophysics University of Minnesota MinneapolisMN55455 United States Department of Physics University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Enrico Fermi Institute University of Chicago 5640 South Ellis Avenue ChicagoIL60637 United States Department of Physics McGill University 3600 Rue University MontrealQCH3A 2T8 Canada School of Mathematics Statistics & Computer Science University of KwaZulu-Natal

We present a constraint on the tensor-to-scalar ratio, r, derived from measurements of cosmic microwave background (CMb) polarization b-modes with "delensing," whereby the uncertainty on r contributed by the sample variance of the gravitational lensing b-modes is reduced by cross-correlating against a lensing b-mode template. This template is constructed by combining an estimate of the polarized CMb with a tracer of the projected large-scale structure. The large-scale-structure tracer used is a map of the cosmic infrared background derived from Planck satellite data, while the polarized CMb map comes from a combination of south Pole Telescope, bicep/Keck, and Planck data. We expand the bicep/Keck likelihood analysis framework to accept a lensing template and apply it to the bicep/Keck data set collected through 2014 using the same parametric foreground modelling as in the previous analysis. From simulations, we find that the uncertainty on r is reduced by ∼ 10%, from σ(r)= 0.024 to 0.022, which can be compared with a ∼ 26% reduction obtained when using a perfect lensing template or if there were zero lensing b-modes. Applying the technique to the real data, the constraint on r is improved from r0.05 Copyright © 2020, The Authors. All rights reserved.

关键词： Cosmology

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erratum to: Measurements of top-quark pair differential and doub.e.differential cross-sections in the +jets channel with pp collisions at TeV using the ATLAs detector [eur. Phys. J. C 79 (2019) 1028]

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The european Physical Journal C 2020年第11期80卷 1-23页

作者： Aad, G. Abbott, b. Abbott, D. C. Abud, A. Abed Abeling, K. Abhayasinghe, D. K. Abidi, s. H. AbouZeid, O. s. Abraham, N. L. Abramowicz, H. Ab.e., H. Abulaiti, Y. Acharya, b. s. Achkar, b. Adachi, s. Adam, L. bourdarios, C. Adam Adamczyk, L. Adamek, L. Adelman, J. Adersberger, M. Adiguzel, A. Adorni, s. Adye, T. Affolder, A. A. Afik, Y. Agapopoulou, C. Agaras, M. N. Aggarwal, A. Agheorghiesei, C. Aguilar-saavedra, J. A. Ahmadov, F. Ahmed, W. s. Ai, X. Aielli, G. Akatsuka, s. Åkesson, T. P. A. Akilli, e. Akimov, A. V. Khoury, K. Al Alberghi, G. L. Albert, J. Verzini, M. J. Alconada Alderweireldt, s. Aleksa, M. Aleksandrov, I. N. Alexa, C. Alexandre, D. Alexopoulos, T. Alfonsi, A. Alfonsi, F. Alhroob, M. Ali, b. Alimonti, G. Alison, J. Alkire, s. P. Allaire, C. Allbrooke, b. M. M. Allen, b. W. Allport, P. P. Aloisio, A. Alonso, A. Alonso, F. Alpigiani, C. Alshehri, A. A. estevez, M. Alvarez Piqueras, D. Álvarez Alviggi, M. G. Coutinho, Y. Amaral Amb.e., A. Ambroz, L. Amelung, C. Amidei, D. santos, s. P. Amor Dos Amoroso, s. Amrouche, C. s. An, F. Anastopoulos, C. Andari, N. Andeen, T. Anders, C. F. Anders, J. K. Andreazza, A. Andrei, V. Anelli, C. R. Angelidakis, s. Angerami, A. Anisenkov, A. V. Annovi, A. Antel, C. Anthony, M. T. Antonelli, M. Antrim, D. J. A. Anulli, F. Aoki, M. Pozo, J. A. Aparisi bella, L. Aperio Arabidze, G. Araque, J. P. Ferraz, V. Araujo Pereira, R. Araujo Arcangeletti, C. Arce, A. T. H. Arduh, F. A. Arguin, J.-F. Argyropoulos, s. Arling, J.-H. Armbruster, A. J. Armstrong, A. Arnaez, O. Arnold, H. Tame, Z. P. Arrubarrena Artamonov, A. Artoni, G. Artz, s. Asai, s. Asbah, N. Asimakopoulou, e. M. Asquith, L. Assahsah, J. Assamagan, K. Astalos, R. Atkin, R. J. Atkinson, M. Atlay, N. b. Atmani, H. Augsten, K. Avolio, G. Avramidou, R. Ayoub, M. K. Azoulay, A. M. Azuelos, G. bachacou, H. bachas, K. backes, M. backman, F. bagnaia, P. bahmani, M. bahrasemani, H. bailey, A. J. bailey, V. R. baines, J. T. bajic, M. bakalis, C. baker, O. K. bakker, P. J. Gupta, D. bakshi balaji, s. baldin, e. M. balek, P. CPPM Aix-Marseille Université CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman USA Department of Physics University of Massachusetts Amherst USA INFN Sezione di Pavia Pavia Italy Dipartimento di Fisica Università di Pavia Pavia Italy II. Physikalisches Institut Georg-August-Universität Göttingen Göttingen Germany Department of Physics Royal Holloway University of London Egham UK Department of Physics University of Toronto Toronto Canada Niels Bohr Institute University of Copenhagen Copenhagen Denmark Department of Physics and Astronomy University of Sussex Brighton UK Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion Israel Institute of Technology Haifa Israel High Energy Physics Division Argonne National Laboratory Argonne USA INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy Department of Physics King’s College London London UK International Center for Elementary Particle Physics and Department of Physics University of Tokyo Tokyo Japan Institut für Physik Universität Mainz Mainz Germany LAPP Université Grenoble Alpes Université Savoie Mont Blanc CNRS/IN2P3 Annecy France AGH University of Science and Technology Faculty of Physics and Applied Computer Science Kraków Poland Department of Physics Northern Illinois University DeKalb USA Fakultät für Physik Ludwig-Maximilians-Universität München Munich Germany Department of Physics Bogazici University Istanbul Turkey Département de Physique Nucléaire et Corpusculaire Université de Genève Geneva Switzerland Particle Physics Department Rutherford Appleton Laboratory Didcot UK Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz USA LAL Université Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France LPC Université Clermont Auvergne CNRS/IN2P3 Clermont-Ferrand France Institute

Corrections for five figures and six tab.e. are noted for the paper, which do not affect the conclusions reported.

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