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Search for the jet-induced diffusion wake in the quark-gluon plasma via measurements of jet-track correlations in photon-jet events in Pb+Pb collisions at sNN=5.02TeV with the ATLAS detector

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Physical Review C 2025年第4期111卷 044909-044909页

作者： G. Aad E. Aakvaag B. Abbott S. Abdelhameed K. Abeling N. J. Abicht S. H. Abidi M. Aboelela A. Aboulhorma H. Abramowicz H. Abreu Y. Abulaiti B. S. Acharya A. Ackermann C. Adam Bourdarios L. Adamczyk S. V. Addepalli M. J. Addison J. Adelman A. Adiguzel T. Adye A. A. Affolder Y. Afik M. N. Agaras J. Agarwala A. Aggarwal C. Agheorghiesei F. Ahmadov W. S. Ahmed S. Ahuja X. Ai G. Aielli A. Aikot M. Ait Tamlihat B. Aitbenchikh M. Akbiyik T. P. A. Åkesson A. V. Akimov D. Akiyama N. N. Akolkar S. Aktas K. Al Khoury G. L. Alberghi J. Albert P. Albicocco G. L. Albouy S. Alderweireldt Z. L. Alegria M. Aleksa I. N. Aleksandrov C. Alexa T. Alexopoulos F. Alfonsi M. Algren M. Alhroob B. Ali H. M. J. Ali S. Ali S. W. Alibocus M. Aliev G. Alimonti W. Alkakhi C. Allaire B. M. M. Allbrooke J. S. Allen J. F. Allen C. A. Allendes Flores P. P. Allport A. Aloisio F. Alonso C. Alpigiani Z. M. K. Alsolami M. Alvarez Estevez A. Alvarez Fernandez M. Alves Cardoso M. G. Alviggi M. Aly Y. Amaral Coutinho A. Ambler C. Amelung M. Amerl C. G. Ames D. Amidei B. Amini K. J. Amirie S. P. Amor Dos Santos K. R. Amos D. Amperiadou S. An V. Ananiev C. Anastopoulos T. Andeen J. K. Anders A. C. Anderson S. Y. Andrean A. Andreazza S. Angelidakis A. Angerami A. V. Anisenkov A. Annovi C. Antel E. Antipov M. Antonelli F. Anulli M. Aoki T. Aoki M. A. Aparo L. Aperio Bella C. Appelt A. Apyan S. J. Arbiol Val C. Arcangeletti A. T. H. Arce J-F. Arguin S. Argyropoulos J.-H. Arling O. Arnaez H. Arnold G. Artoni H. Asada K. Asai S. Asai N. A. Asbah R. A. Ashby Pickering K. Assamagan R. Astalos K. S. V. Astrand S. Atashi R. J. Atkin M. Atkinson H. Atmani P. A. Atmasiddha K. Augsten S. Auricchio A. D. Auriol V. A. Austrup G. Avolio K. Axiotis G. Azuelos D. Babal H. Bachacou K. Bachas A. Bachiu F. Backman A. Badea T. M. Baer P. Bagnaia M. Bahmani D. Bahner K. Bai J. T. Baines L. Baines O. K. Baker E. Bakos D. Bakshi Gupta L. E. Balabram Filho V. Balakrishnan R. Balasubramanian E. M. Baldin P. Balek E. Ballabene F. Balli L. M. Baltes W. K. Balunas J. Balz I. Bamwidhi CPPM Aix-Marseille Université CNRS/IN2P3 Marseille France Department for Physics and Technology University of Bergen Bergen Norway Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA New York University Abu Dhabi Abu Dhabi United Arab Emirates II. Physikalisches Institut Georg-August-Universität Göttingen Göttingen Germany Fakultät Physik Technische Universität Dortmund Dortmund Germany Physics Department Brookhaven National Laboratory Upton New York USA Physics Department Southern Methodist University Dallas Texas USA Faculté des sciences Université Mohammed V Rabat Morocco 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 Department of Physics New York University New York New York USA INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy Also at Department of Physics King's College London London United Kingdom. Kirchhoff-Institut für Physik Ruprecht-Karls-Universität Heidelberg Heidelberg Germany LAPP Université Savoie Mont Blanc CNRS/IN2P3 Annecy France AGH University of Krakow Faculty of Physics and Applied Computer Science Krakow Poland Department of Physics Brandeis University Waltham Massachusetts USA School of Physics and Astronomy University of Manchester Manchester United Kingdom Department of Physics Northern Illinois University DeKalb Illinois USA Department of Physics Istanbul University Istanbul Türkiye Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Enrico Fermi Institute University of Chicago Chicago Illinois USA Institut de Física d'Altes Energies (IFAE) Barcelona Institute of Science and Technology Barcelona Spain INFN Sezione di Pavia Pavia Italy Dipartimento di Fisica Università di Pa

This paper presents a measurement of jet-track correlations in photon-jet events, using 1.72 nb−1 of Pb+Pb data at sNN=5.02TeV recorded with the ATLAS detector at the LHC. Events with energetic photon-jet pairs are selected, where the photon and jet are approximately back-to-back in azimuth. The angular correlation between jets and charged-particle tracks with transverse momentum (pT) in the range 0.5–2.0 GeV in the hemisphere opposite to the jet, |Δϕ(jet,track)|>π/2, is measured as a function of their relative pseudorapidity difference, |Δη(jet,track)|. In central Pb+Pb collisions, these correlations are predicted to be sensitive to the diffusion wake in the quark-gluon plasma resulting from the lost energy of high-pT partons traversing the plasma, with a characteristic modification as a function of |Δη(jet,track)|. The correlations are examined with different selections on the jet-to-photon pT ratio to select events with different degrees of energy loss. No diffusion wake signal is observed within the current sensitivity and upper limits at 95% confidence level on the diffusion wake amplitude are reported.

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Changing life expectancy in European countries 1990–2021: a subanalysis of causes and risk factors from the Global Burden of Disease Study 2021

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The Lancet Public Health 2025年第3期10卷 e172-e188页

作者： Steel, Nicholas Bauer-Staeb, Clarissa Maria Mercedes Ford, John A. Abbafati, Cristiana Abdalla, Mohammed Altigani Abdelkader, Atef Abdi, Parsa Zuñiga, Roberto Ariel Abeldaño Abiodun, Olugbenga Olusola Abolhassani, Hassan Abu-Gharbieh, Eman Abukhadijah, Hana J. Abu-Zaid, Ahmed Addo, Isaac Yeboah Addolorato, Giovanni Adekanmbi, Victor Adetunji, Juliana Bunmi Adeyeoluwa, Temitayo Esther Agardh, Emilie E. Agyemang-Duah, Williams Ahmad, Danish Ahmed, Ayman Ahmed, Syed Anees Akinosoglou, Karolina Akkaif, Mohammed Ahmed Al Awaidy, Salah Al Hasan, Syed Mahfuz Al Zaabi, Omar Ali Mohammed Aldridge, Robert W. Algammal, Abdelazeem M. Al-Gheethi, Adel Ali Saeed Ali, Abid Ali, Mohammed Usman Ali, Syed Shujait Ali, Waad Alicandro, Gianfranco Alif, Sheikh Mohammad Al-Jumaily, Adel Allebeck, Peter Alrawashdeh, Ahmad Al-Rifai, Rami H. Alsabri, Mohammed A. Alshahrani, Najim Z. Aluh, Deborah Oyine Al-Wardat, Mohammad Al-Zyoud, Walid A. Amiri, Sohrab Anderlini, Deanna Andrei, Catalina Liliana Anil, Abhishek Anvari, Saeid Anyasodor, Anayochukwu Edward Appiah, Seth Christopher Yaw Aquilano, Michele Arabloo, Jalal Arafat, Mosab Areda, Demelash Aremu, Abdulfatai Armani, Keivan Armocida, Benedetta Ärnlöv, Johan Asaduzzaman, Muhammad Astell-Burt, Thomas Aujayeb, Avinash Ausloos, Marcel Azadnajafabad, Sina Aziz, Shahkaar Azzam, Ahmed Y. Babu, Giridhara Rathnaiah Badache, Andreea Corina Badiye, Ashish D. Bahramian, Saeed Baig, Atif Amin Baker, Jennifer L. Bansal, Hansi Bärnighausen, Till Winfried Barone, Mark Thomaz Ugliara Barrow, Amadou Barteit, Sandra Bashir, Shahid Bashiru, Hameed Akande Basso, João Diogo Bastan, Mohammad-Mahdi Basu, Sanjay Batra, Kavita Bauckneht, Matteo Baune, Bernhard T. Beghi, Massimiliano Beiranvand, Maryam Béjot, Yannick Bell, Michelle L. Bello, Olorunjuwon Omolaja Belo, Luis Beloukas, Apostolos Beneke, Alice A. Bettencourt, Paulo J.G. Bhagavathula, Akshaya Srikanth Bhala, Neeraj Bhaskar, Sonu Bisulli, Francesca Bjørge, Tone Bodunrin, Aadam Olalekan Carvajal, Alejandro Botero Bouaoud, Souad Brayne, Carol Brenner, H Department of Primary Care and Public Health University of East Anglia Norwich United Kingdom Office for Health Improvement and Disparities Department of Health and Social Care London United Kingdom Department of Legal and Economic Studies La Sapienza University Rome Italy Rome Italy Hull York Medical School University of Hull Hull United Kingdom Department of Mathematics and Sciences Ajman University Ajman United Arab Emirates Department of Medicine Memorial University St. John's NL Canada Postgraduate Department University of Sierra Sur Miahuatlan de Porfirio Diaz Mexico Yhteiskuntadatatieteen keskus (Centre for Social Data Science) Helsinki Finland Department of Internal Medicine Federal Medical Centre Abuja Nigeria Research Center for Immunodeficiencies Tehran University of Medical Sciences Tehran Iran Department of Medical Biochemistry and Biophysics Karolinska Institutet (Karolinska Institute) Stockholm Sweden Department of Clinical Sciences University of Sharjah Sharjah United Arab Emirates Department of Biopharmaceutics and Clinical Pharmacy University of Jordan Amman Jordan Medical Research Center Hamad Medical Corporation Doha Qatar Department of Biochemistry and Molecular Medicine Alfaisal University Riyadh Saudi Arabia College of Graduate Health Sciences University of Tennessee Memphis TN United States School of Medicine Sydney NSW Australia Centre for Social Research in Health University of New South Wales Sydney NSW Australia Internal Medicine and Alcohol Related Disease Unit Fondazione Policlinico Universitario A. Gemelli IRCCS Rome Italy Department of Medical and Surgical Sciences Università Cattolica di Roma (Catholic University of Rome) Rome Italy Department of Obstetrics and Gynecology University of Texas Medical Branch Galveston TX United States Department of Biochemistry Osun State University Osogbo Nigeria Department of Pharmacology and Therapeutics University of Medical Sciences Ondo Ondo Nigeria Department of Veteri

Background: Decades of steady improvements in life expectancy in Europe slowed down from around 2011, well before the COVID-19 pandemic, for reasons which remain disputed. We aimed to assess how changes in risk factors and cause-specific death rates in different European countries related to changes in life expectancy in those countries before and during the COVID-19 pandemic. Methods: We used data and methods from the Global Burden of Diseases, Injuries, and Risk Factors Study 2021 to compare changes in life expectancy at birth, causes of death, and population exposure to risk factors in 16 European Economic Area countries (Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, and Sweden) and the four UK nations (England, Northern Ireland, Scotland, and Wales) for three time periods: 1990–2011, 2011–19, and 2019–21. Changes in life expectancy and causes of death were estimated with an established life expectancy cause-specific decomposition method, and compared with summary exposure values of risk factors for the major causes of death influencing life expectancy. Findings: All countries showed mean annual improvements in life expectancy in both 1990–2011 (overall mean 0·23 years [95% uncertainty interval [UI] 0·23 to 0·24]) and 2011–19 (overall mean 0·15 years [0·13 to 0·16]). The rate of improvement was lower in 2011–19 than in 1990–2011 in all countries except for Norway, where the mean annual increase in life expectancy rose from 0·21 years (95% UI 0·20 to 0·22) in 1990–2011 to 0·23 years (0·21 to 0·26) in 2011–19 (difference of 0·03 years). In other countries, the difference in mean annual improvement between these periods ranged from –0·01 years in Iceland (0·19 years [95% UI 0·16 to 0·21] vs 0·18 years [0·09 to 0·26]), to –0·18 years in England (0·25 years [0·24 to 0·25] vs 0·07 years [0·06 to 0·08]). In 2019–21, there was an overall decrease in mean annual life expectancy a

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Measurement of branching fractions of Λc+→ηΛπ+, ηΣ0π+, Λ(1670)π+, and ηΣ(1385)+

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Physical Review D 2021年第5期103卷 052005-052005页

作者： J. Y. Lee K. Tanida Y. Kato S. K. Kim S. B. Yang I. Adachi J. K. Ahn H. Aihara S. Al Said D. M. Asner T. Aushev R. Ayad V. Babu S. Bahinipati P. Behera C. Beleño J. Bennett M. Bessner B. Bhuyan T. Bilka J. Biswal G. Bonvicini A. Bozek M. Bračko T. E. Browder M. Campajola L. Cao D. Červenkov M.-C. Chang P. Chang V. Chekelian A. Chen B. G. Cheon K. Chilikin K. Cho S.-K. Choi Y. Choi S. Choudhury D. Cinabro S. Cunliffe G. De Nardo F. Di Capua Z. Doležal T. V. Dong S. Eidelman D. Epifanov T. Ferber B. G. Fulsom R. Garg V. Gaur A. Garmash A. Giri P. Goldenzweig B. Golob C. Hadjivasiliou O. Hartbrich K. Hayasaka H. Hayashii M. T. Hedges M. Hernandez Villanueva C.-L. Hsu K. Inami A. Ishikawa R. Itoh M. Iwasaki W. W. Jacobs E.-J. Jang S. Jia Y. Jin C. W. Joo K. K. Joo K. H. Kang G. Karyan H. Kichimi C. Kiesling B. H. Kim D. Y. Kim K.-H. Kim K. T. Kim S. H. Kim Y. J. Kim Y.-K. Kim K. Kinoshita P. Kodyš S. Korpar D. Kotchetkov P. Križan R. Kroeger P. Krokovny T. Kuhr R. Kulasiri K. Kumara A. Kuzmin Y.-J. Kwon S. C. Lee C. H. Li L. K. Li Y. B. Li L. Li Gioi J. Libby K. Lieret Z. Liptak D. Liventsev T. Luo C. MacQueen M. Masuda T. Matsuda D. Matvienko M. Merola K. Miyabayashi R. Mizuk G. B. Mohanty T. J. Moon T. Mori R. Mussa T. Nakano M. Nakao A. Natochii M. Nayak M. Niiyama N. K. Nisar S. Nishida K. Ogawa S. Ogawa S. L. Olsen H. Ono Y. Onuki P. Oskin P. Pakhlov G. Pakhlova S. Pardi S.-H. Park S. Patra S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen T. Podobnik V. Popov E. Prencipe M. T. Prim A. Rostomyan N. Rout G. Russo D. Sahoo Y. Sakai S. Sandilya A. Sangal L. Santelj V. Savinov G. Schnell J. Schueler C. Schwanda A. J. Schwartz R. Seidl Y. Seino K. Senyo M. E. Sevior M. Shapkin V. Shebalin J.-G. Shiu B. Shwartz A. Sokolov E. Solovieva S. Stanič M. Starič Z. S. Stottler M. Sumihama T. Sumiyoshi W. Sutcliffe M. Takizawa U. Tamponi F. Tenchini M. Uchida T. Uglov S. Uno Y. Usov S. E. Vahsen R. Van Tonder G. Varner A. Vinokurova V. Vorobyev A. Vossen C. H. Wang E. Wang M.-Z. Wang P. Wang M. Watanabe S. Watanuki S. Wehle J. Seoul National University Seoul 08826 Advanced Science Research Center Japan Atomic Energy Agency Naka 319-1195 Graduate School of Science Nagoya University Nagoya 464-8602 Korea University Seoul 02841 High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Brookhaven National Laboratory Upton New York 11973 Higher School of Economics (HSE) Moscow 101000 Deutsches Elektronen–Synchrotron 22607 Hamburg Indian Institute of Technology Bhubaneswar Satya Nagar 751007 Indian Institute of Technology Madras Chennai 600036 II. Physikalisches Institut Georg-August-Universität Göttingen 37073 Göttingen University of Mississippi University Mississippi 38677 University of Hawaii Honolulu Hawaii 96822 Indian Institute of Technology Guwahati Assam 781039 Faculty of Mathematics and Physics Charles University 121 16 Prague J. Stefan Institute 1000 Ljubljana Wayne State University Detroit Michigan 48202 H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 University of Maribor 2000 Maribor INFN—Sezione di Napoli 80126 Napoli Università di Napoli Federico II 80126 Napoli University of Bonn 53115 Bonn Department of Physics Fu Jen Catholic University Taipei 24205 Department of Physics National Taiwan University Taipei 10617 Max-Planck-Institut für Physik 80805 München National Central University Chung-li 32054 Department of Physics and Institute of Natural Sciences Hanyang University Seoul 04763 P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Korea Institute of Science and Technology Information Daejeon 34141 Gyeongsang National University Jinju 52828 Sungkyunkwan University Suwon 16419 Indian Institute of Technology Hyderabad Telangana 502285 Key Labor

We report branching fraction measurements of four decay modes of the Λc+ baryon, each of which includes an η meson and a Λ baryon in the final state, and all of which are measured relative to the Λc+→pK−π+ decay mode. The results are based on a 980 fb−1 data sample collected by the Belle detector at the KEKB asymmetric-energy e+e− collider. Two decays, Λc+→ηΣ0π+ and Λ(1670)π+, are observed for the first time, while the measurements of the other decay modes, Λc+→ηΛπ+ and ηΣ(1385)+, are more precise than those made previously. We obtain relative branching fractions of B(Λc+→ηΛπ+)/B(Λc+→pK−π+)=0.293±0.003±0.014, B(Λc+→ηΣ0π+)/B(Λc+→pK−π+)=0.120±0.006±0.010, B(Λc+→Λ(1670)π+)×B(Λ(1670)→ηΛ)/B(Λc+→pK−π+)=(5.54±0.29±0.73)×10−2, and B(Λc+→ηΣ(1385)+)/B(Λc+→pK−π+)=0.192±0.006±0.016. The mass and width of the Λ(1670) are also precisely determined to be 1674.3±0.8±4.9 MeV/c2 and 36.1±2.4±4.8 MeV, respectively, where the uncertainties are statistical and systematic, respectively.

关键词： Branching fraction Hadronic decays Charmed baryons Hyperons Mass Lepton colliders Particle decays Precision measurements

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Search for B0→τ±ℓ∓ (ℓ=e, μ) with a hadronic tagging method at Belle

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Physical Review D 2021年第9期104卷 L091105-L091105页

作者： H. Atmacan A. J. Schwartz K. Kinoshita I. Adachi K. Adamczyk H. Aihara S. Al Said D. M. Asner V. Aulchenko T. Aushev R. Ayad V. Babu S. Bahinipati M. Bauer P. Behera K. Belous J. Bennett F. Bernlochner M. Bessner V. Bhardwaj B. Bhuyan T. Bilka J. Biswal A. Bobrov A. Bozek M. Bračko P. Branchini T. E. Browder A. Budano M. Campajola L. Cao D. Červenkov M.-C. Chang P. Chang V. Chekelian A. Chen B. G. Cheon K. Chilikin H. E. Cho K. Cho S.-K. Choi Y. Choi S. Choudhury D. Cinabro S. Cunliffe S. Das N. Dash G. De Nardo G. De Pietro R. Dhamija F. Di Capua J. Dingfelder Z. Doležal T. V. Dong S. Dubey D. Epifanov T. Ferber D. Ferlewicz A. Frey B. G. Fulsom R. Garg V. Gaur N. Gabyshev A. Garmash A. Giri P. Goldenzweig E. Graziani D. Greenwald T. Gu Y. Guan K. Gudkova C. Hadjivasiliou S. Halder T. Hara O. Hartbrich K. Hayasaka H. Hayashii W.-S. Hou C.-L. Hsu K. Inami G. Inguglia A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki W. W. Jacobs S. Jia Y. Jin K. K. Joo A. B. Kaliyar K. H. Kang Y. Kato T. Kawasaki C. Kiesling C. H. Kim D. Y. Kim K.-H. Kim S. H. Kim Y.-K. Kim P. Kodyš T. Konno A. Korobov S. Korpar E. Kovalenko P. Križan R. Kroeger P. Krokovny T. Kuhr R. Kulasiri K. Kumara Y.-J. Kwon Y.-T. Lai J. S. Lange M. Laurenza S. C. Lee J. Li L. K. Li Y. B. Li L. Li Gioi J. Libby K. Lieret D. Liventsev C. MacQueen M. Masuda T. Matsuda D. Matvienko M. Merola F. Metzner K. Miyabayashi R. Mizuk G. B. Mohanty R. Mussa M. Nakao Z. Natkaniec A. Natochii L. Nayak M. Nayak M. Niiyama N. K. Nisar S. Nishida S. Ogawa H. Ono Y. Onuki P. Oskin P. Pakhlov G. Pakhlova S. Pardi H. Park S.-H. Park A. Passeri S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen T. Podobnik E. Prencipe M. T. Prim I. Ripp-Baudot A. Rostomyan N. Rout G. Russo D. Sahoo S. Sandilya A. Sangal L. Santelj T. Sanuki V. Savinov G. Schnell J. Schueler C. Schwanda Y. Seino K. Senyo M. E. Sevior M. Shapkin C. Sharma C. P. Shen J.-G. Shiu F. Simon A. Sokolov E. Solovieva M. Starič Z. S. Stottler M. Sumihama K. Sumisawa T. Sumiyoshi W. Sutcliffe U. Tamponi K. Tanida Y. Tao F. Tenchini University of Cincinnati Cincinnati Ohio 45221 High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Brookhaven National Laboratory Upton New York 11973 Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 National Research University Higher School of Economics Moscow 101000 Deutsches Electronen-Synchrotron 22607 Hamburg Indian Institute of Technology Bhubaneswar Satya Nagar 751007 Institut für Experimentelle Teilchenphysik Karlsruher Institut für Technologie 76131 Karlsruhe Indian Institute of Technology Madras Chennai 600036 Institute for High Energy Physics Protvino 142281 University of Mississippi University Mississippi 38677 University of Bonn 53115 Bonn University of Hawaii Honolulu Hawaii 96822 Indian Institute of Science Education and Research Mohali SAS Nagar 140306 Indian Institute of Technology Guwahati Assam 781039 Faculty of Mathematics and Physics Charles University 121 16 Prague J. Stefan Institute 1000 Ljubljana Faculty of Chemistry and Chemical Engineering University of Maribor 2000 Maribor INFN—Sezione di Roma Tre I-00146 Rome INFN—Sezione di Napoli I-80126 Napoli Università di Napoli Federico II I-80126 Napoli Department of Physics Fu Jen Catholic University Taipei 24205 Department of Physics National Taiwan University Taipei 10617 Max-Planck-Institut für Physik 80805 München National Central University Chung-li 32054 Department of Physics and Institute of Natural Sciences Hanyang University Seoul 04763 P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Korea Institute of Science and Technology Information Da

We present a search for the lepton-flavor-violating decays B0→τ±ℓ∓, where ℓ=(e,μ), using the full data sample of 772×106 BB¯ pairs recorded by the Belle detector at the KEKB asymmetric-energy e+e− collider. We use events in which one B meson is fully reconstructed in a hadronic decay mode. The τ± lepton is reconstructed indirectly using the momentum of the reconstructed B and that of the ℓ∓ from the signal decay. We find no evidence for B0→τ±ℓ∓ decays and set upper limits on their branching fractions at 90% confidence level of B(B0→τ±μ∓)<1.5×10−5 and B(B0→τ±e∓)<1.6×10−5.

关键词： Branching fraction Hypothetical particle physics models Leptonic, semileptonic & radiative decays Rare decays Bottom mesons Tau leptons Flavor symmetries Lepton colliders

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Measurement of ψ(2S) nuclear modification at backward and forward rapidity in p+p, p+Al, and p+Au collisions at sNN=200 GeV

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Physical Review C 2022年第6期105卷 064912-064912页

作者： U. A. Acharya C. Aidala Y. Akiba M. Alfred V. Andrieux N. Apadula H. Asano B. Azmoun V. Babintsev N. S. Bandara K. N. Barish S. Bathe A. Bazilevsky M. Beaumier R. Belmont A. Berdnikov Y. Berdnikov L. Bichon B. Blankenship D. S. Blau J. S. Bok V. Borisov M. L. Brooks J. Bryslawskyj V. Bumazhnov S. Campbell V. Canoa Roman R. Cervantes M. Chiu C. Y. Chi I. J. Choi J. B. Choi Z. Citron M. Connors R. Corliss Y. Corrales Morales N. Cronin T. Csörgő M. Csanád T. W. Danley M. S. Daugherity G. David C. T. Dean K. DeBlasio K. Dehmelt A. Denisov A. Deshpande E. J. Desmond A. Dion D. Dixit J. H. Do V. Doomra A. Drees K. A. Drees J. M. Durham A. Durum H. En'yo A. Enokizono R. Esha S. Esumi B. Fadem W. Fan N. Feege D. E. Fields M. Finger, Jr. M. Finger D. Fitzgerald S. L. Fokin J. E. Frantz A. Franz A. D. Frawley Y. Fukuda P. Gallus C. Gal P. Garg H. Ge M. Giles F. Giordano Y. Goto N. Grau S. V. Greene M. Grosse Perdekamp T. Gunji H. Guragain T. Hachiya J. S. Haggerty K. I. Hahn H. Hamagaki H. F. Hamilton J. Hanks S. Y. Han M. Harvey S. Hasegawa T. O. S. Haseler T. K. Hemmick X. He J. C. Hill K. Hill A. Hodges R. S. Hollis K. Homma B. Hong T. Hoshino N. Hotvedt J. Huang K. Imai M. Inaba A. Iordanova D. Isenhower D. Ivanishchev B. V. Jacak M. Jezghani X. Jiang Z. Ji B. M. Johnson D. Jouan D. S. Jumper J. H. Kang D. Kapukchyan S. Karthas D. Kawall A. V. Kazantsev V. Khachatryan A. Khanzadeev A. Khatiwada C. Kim E.-J. Kim M. Kim T. Kim D. Kincses A. Kingan E. Kistenev J. Klatsky P. Kline T. Koblesky D. Kotov L. Kovacs S. Kudo K. Kurita Y. Kwon J. G. Lajoie D. Larionova A. Lebedev S. Lee S. H. Lee M. J. Leitch Y. H. Leung N. A. Lewis S. H. Lim M. X. Liu X. Li V.-R. Loggins D. A. Loomis K. Lovasz D. Lynch S. Lökös T. Majoros Y. I. Makdisi M. Makek V. I. Manko E. Mannel M. McCumber P. L. McGaughey D. McGlinchey C. McKinney M. Mendoza A. C. Mignerey A. Milov D. K. Mishra J. T. Mitchell M. Mitrankova Iu. Mitrankov G. Mitsuka S. Miyasaka S. Mizuno M. M. Mondal P. Montuenga T. Moon D. P. Morrison B. Mulilo T. Murakami J. Murata K. Nagai Georgia State University Atlanta Georgia 30303 USA Department of Physics University of Michigan Ann Arbor Michigan 48109-1040 USA RIKEN Nishina Center for Accelerator-Based Science Wako Saitama 351-0198 Japan RIKEN BNL Research Center Brookhaven National Laboratory Upton New York 11973-5000 USA Department of Physics and Astronomy Howard University Washington DC 20059 USA Iowa State University Ames Iowa 50011 USA Kyoto University Kyoto 606-8502 Japan Physics Department Brookhaven National Laboratory Upton New York 11973-5000 USA IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino 142281 Russia Department of Physics University of Massachusetts Amherst Massachusetts 01003-9337 USA University of California-Riverside Riverside California 92521 USA Baruch College City University of New York New York New York 10010 USA University of Colorado Boulder Colorado 80309 USA Physics and Astronomy Department University of North Carolina at Greensboro Greensboro North Carolina 27412 USA Saint Petersburg State Polytechnic University St. Petersburg 195251 Russia Vanderbilt University Nashville Tennessee 37235 USA National Research Center “Kurchatov Institute ” Moscow 123098 Russia National Research Nuclear University MEPhI Moscow Engineering Physics Institute Moscow 115409 Russia New Mexico State University Las Cruces New Mexico 88003 USA Los Alamos National Laboratory Los Alamos New Mexico 87545 USA Columbia University New York New York 10027 and Nevis Laboratories Irvington New York 10533 USA Department of Physics and Astronomy Stony Brook University SUNY Stony Brook New York 11794-3800 USA University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA Jeonbuk National University Jeonju 54896 Korea Weizmann Institute Rehovot 76100 Israel Eszterházy Károly University Károly Róbert Campus H-3200 Gyöngyös Mátrai út 36 Hungary Institute for Particle and Nuclear Physics Wigner Research Centr

Suppression of the J/ψ nuclear-modification factor has been seen as a trademark signature of final-state effects in large collision systems for decades. In small systems, the nuclear modification was attributed to cold-nuclear-matter effects until the observation of strong differential suppression of the ψ(2S) state in p+A and d+A collisions suggested the presence of final-state effects. Results of J/ψ and ψ(2S) measurements in the dimuon decay channel are presented here for p+p, p+Al, and p+Au collision systems at sNN=200GeV. The results are predominantly shown in the form of the nuclear-modification factor, RpA, the ratio of the ψ(2S) invariant yield per nucleon-nucleon collision in collisions of proton on target nucleus to that in p+p collisions. Measurements of the J/ψ and ψ(2S) nuclear-modification factor are compared with shadowing and transport-model predictions, as well as to complementary measurements at Large Hadron Collider energies.

关键词： Leptonic, semileptonic & radiative decays Relativistic heavy-ion collisions Charmed mesons Hadron colliders Muons Quarkonia

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Nonprompt direct-photon production in Au+Au collisions at √sNN = 200 GeV

arXiv

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arXiv 2022年

作者： Abdulameer, N.J. Acharya, U. Adare, A. Aidala, C. Ajitanand, N.N. Akiba, Y. Alfred, M. Apadula, N. Asano, H. Azmoun, B. Babintsev, V. Bai, M. Bandara, N.S. Bannier, B. Barish, K.N. Bathe, S. Bazilevsky, A. Beaumier, M. Beckman, S. Belmont, R. Berdnikov, A. Berdnikov, Y. Bichon, L. Blankenship, B. Blau, D.S. Bok, J.S. Borisov, V. Boyle, K. Brooks, M.L. Bryslawskyj, J. Bumazhnov, V. Campbell, S. Canoa Roman, V. Chen, C.-H. Chiu, M. Chi, C.Y. Choi, I.J. Choi, J.B. Chujo, T. Citron, Z. Connors, M. Corliss, R. Corrales Morales, Y. Csanád, M. Csörgo, T. Danley, T.W. Datta, A. Daugherity, M.S. David, G. Dean, C.T. DeBlasio, K. Dehmelt, K. Denisov, A. Deshpande, A. Desmond, E.J. Dion, A. Diss, P.B. Do, J.H. Doomra, V. Drees, A. Drees, K.A. Durham, J.M. Durum, A. Enokizono, A. Esha, R. Fadem, B. Fan, W. Feege, N. Fields, D.E. Finger, M. Finger, M. Firak, D. Fitzgerald, D. Fokin, S.L. Frantz, J.E. Franz, A. Frawley, A.D. Gallus, P. Gal, C. Garg, P. Ge, H. Giles, M. Giordano, F. Glenn, A. Goto, Y. Grau, N. Greene, S.V. Grosse Perdekamp, M. Gunji, T. Guo, T. Hachiya, T. Haggerty, J.S. Hahn, K.I. Hamagaki, H. Hamilton, H.F. Hanks, J. Han, S.Y. Harvey, M. Hasegawa, S. Haseler, T.O.S. Hashimoto, K. Hemmick, T.K. He, X. Hill, J.C. Hodges, A. Hollis, R.S. Homma, K. Hong, B. Hoshino, T. Hotvedt, N. Huang, J. Imai, K. Inaba, M. Iordanova, A. Isenhower, D. Ivanishchev, D. Jacak, B.V. Jezghani, M. Jiang, X. Ji, Z. Johnson, B.M. Jouan, D. Jumper, D.S. Kanda, S. Kang, J.H. Kawall, D. Kazantsev, A.V. Key, J.A. Khachatryan, V. Khanzadeev, A. Khatiwada, A. Kimelman, B. Kim, C. Kim, D.J. Kim, E.-J. Kim, G.W. Kim, M. Kim, T. Kincses, D. Kingan, A. Kistenev, E. Kitamura, R. Klatsky, J. Kleinjan, D. Kline, P. Koblesky, T. Komkov, B. Kotov, D. Kovacs, L. Kurgyis, B. Kurita, K. Kurosawa, M. Kwon, Y. Lajoie, J.G. Larionova, D. Lebedev, A. Lee, S. Lee, S.H. Leitch, M.J. Lewis, N.A. Lim, S.H. Abilene Christian University AbileneTX79699 United States Department of Physics Augustana University Sioux FallsSD57197 United States Department of Physics Banaras Hindu University Varanasi221005 India Bhabha Atomic Research Centre Bombay400 085 India Baruch College City University of New York New YorkNY10010 United States Collider-Accelerator Department Brookhaven National Laboratory UptonNY11973-5000 United States Physics Department Brookhaven National Laboratory UptonNY11973-5000 United States University of California-Riverside RiversideCA92521 United States Charles University Faculty of Mathematics and Physics Troja Prague180 00 Czech Republic Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing102413 China Center for Nuclear Study Graduate School of Science University of Tokyo Bunkyo 7-3-1 Hongo Tokyo113-0033 Japan University of Colorado BoulderCO80309 United States Columbia University New York New York10027 United States Nevis Laboratories IrvingtonNY10533 United States Czech Technical University Zikova 4 Prague 6166 36 Czech Republic Debrecen University Egyetem tér 1 DebrecenH-4010 Hungary ELTE Eötvös Loránd University Pázmány P. s. 1/A BudapestH-1117 Hungary Ewha Womans University Seoul120-750 Korea Republic of Florida A&M University TallahasseeFL32307 United States Florida State University TallahasseeFL32306 United States Georgia State University AtlantaGA30303 United States Hiroshima University Kagamiyama Higashi-Hiroshima739-8526 Japan Department of Physics and Astronomy Howard University WashingtonDC20059 United States IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino142281 Russia University of Illinois at Urbana-Champaign UrbanaIL61801 United States Institute for Nuclear Research The Russian Academy of Sciences prospekt 60-letiya Oktyabrya 7a Moscow117312 Russia Institute of Physics Academy of Scien

The measurement of the direct-photon spectrum from Au+Au collisions at √sNN = 200 GeV is presented by the PHENIX collaboration using the external-photon-conversion technique for 0%-93% central collisions in a transverse-momentum (pT) range of 0.8-10 GeV/c. An excess of direct photons, above prompt-photon production from hard-scattering processes, is observed for pT coll-scaled direct photons from p+p collisions at 200 GeV, from the direct-photon spectrum. Results are obtained for 0.8 © 2022, CC BY.

关键词： Germanium alloys

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Measurements of second-harmonic Fourier coefficients from azimuthal anisotropies in p+p, p+Au, d+Au, and 3He+Au collisions at √sNN = 200 GeV

arXiv

引用

arXiv 2022年

作者： Abdulameer, N.J. Acharya, U. Adare, A. Aidala, C. Ajitanand, N.N. Akiba, Y. Alfred, M. Andrieux, V. Aoki, K. Apadula, N. Asano, H. Ayuso, C. Azmoun, B. Babintsev, V. Bai, M. Bandara, N.S. Bannier, B. Barish, K.N. Bathe, S. Bazilevsky, A. Beaumier, M. Beckman, S. Belmont, R. Berdnikov, A. Berdnikov, Y. Bichon, L. Blankenship, B. Blau, D.S. Boer, M. Bok, J.S. Borisov, V. Boyle, K. Brooks, M.L. Bryslawskyj, J. Bumazhnov, V. Butler, C. Campbell, S. Canoa Roman, V. Cervantes, R. Chen, C.-H. Chiu, M. Chi, C.Y. Choi, I.J. Choi, J.B. Chujo, T. Citron, Z. Connors, M. Corliss, R. Corrales Morales, Y. Cronin, N. Csanád, M. Csörgo, T. Liu, L.D. Danley, T.W. Datta, A. Daugherity, M.S. David, G. Dean, C.T. DeBlasio, K. Dehmelt, K. Denisov, A. Deshpande, A. Desmond, E.J. Dion, A. Diss, P.B. Dixit, D. Doomra, V. Do, J.H. Drees, A. Drees, K.A. Dumancic, M. Durham, J.M. Durum, A. Elder, T. En'yo, H. Enokizono, A. Esha, R. Fadem, B. Fan, W. Feege, N. Fields, D.E. Finger, M. Finger, M. Firak, D. Fitzgerald, D. Fokin, S.L. Frantz, J.E. Franz, A. Frawley, A.D. Fukuda, Y. Gallus, P. Gal, C. Garg, P. Ge, H. Giles, M. Giordano, F. Glenn, A. Goto, Y. Grau, N. Greene, S.V. Grosse Perdekamp, M. Gunji, T. Guragain, H. Hachiya, T. Haggerty, J.S. Hahn, K.I. Hamagaki, H. Hamilton, H.F. Hanks, J. Han, S.Y. Harvey, M. Hasegawa, S. Haseler, T.O.S. Hashimoto, K. Hemmick, T.K. He, X. Hill, J.C. Hill, K. Hodges, A. Hollis, R.S. Homma, K. Hong, B. Hoshino, T. Hotvedt, N. Huang, J. Imai, K. Imrek, J. Inaba, M. Iordanova, A. Isenhower, D. Ito, Y. Ivanishchev, D. Jacak, B.V. Jezghani, M. Jiang, X. Ji, Z. Johnson, B.M. Jorjadze, V. Jouan, D. Jumper, D.S. Kanda, S. Kang, J.H. Kapukchyan, D. Karthas, S. Kawall, D. Kazantsev, A.V. Key, J.A. Khachatryan, V. Khanzadeev, A. Khatiwada, A. Kimelman, B. Kim, C. Kim, D.J. Kim, E.-J. Kim, G.W. Kim, M. Kim, M.H. Kim, T. Kincses, D. Kingan, A. Kistenev, E. Abilene Christian University AbileneTX79699 United States Department of Physics Augustana University Sioux FallsSD57197 United States Department of Physics Banaras Hindu University Varanasi221005 India Bhabha Atomic Research Centre Bombay400 085 India Baruch College City University of New York New YorkNY10010 United States Collider-Accelerator Department Brookhaven National Laboratory UptonNY11973-5000 United States Physics Department Brookhaven National Laboratory UptonNY11973-5000 United States University of California-Riverside RiversideCA92521 United States Charles University Faculty of Mathematics and Physics Troja Prague180 00 Czech Republic Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing102413 China Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo113-0033 Japan University of Colorado BoulderCO80309 United States Columbia University New YorkNY10027 United States Nevis Laboratories IrvingtonNY10533 United States Czech Technical University Zikova 4 Prague 6166 36 Czech Republic Debrecen University Egyetem tér 1 DebrecenH-4010 Hungary ELTE Eötvös Loránd University Pázmány P. s. 1/A BudapestH-1117 Hungary Ewha Womans University Seoul120-750 Korea Republic of Florida A&M University TallahasseeFL32307 United States Florida State University TallahasseeFL32306 United States Georgia State University AtlantaGA30303 United States Hiroshima University Kagamiyama Higashi-Hiroshima739-8526 Japan Department of Physics and Astronomy Howard University WashingtonDC20059 United States IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino142281 Russia University of Illinois at Urbana-Champaign UrbanaIL61801 United States Institute for Nuclear Research of the Russian Academy of Sciences prospekt 60-letiya Oktyabrya 7a Moscow117312 Russia Institute of Physics Academy of Sciences o

Recently, the PHENIX Collaboration has published second- and third-harmonic Fourier coefficients v2 and v3 for midrapidity (|η| 3He+Au collisions at √sNN = 200 GeV utilizing three sets of two-particle correlations for two detector combinations with different pseudorapidity acceptance [Phys. Rev. C 105, 024901 (2022)]. This paper extends these measurements of v2 to all centralities in p+Au, d+Au, and 3He+Au collisions, as well as p+p collisions, as a function of transverse momentum (pT) and event multiplicity. The kinematic dependence of v2 is quantified as the ratio R of v2 between the two detector combinations as a function of event multiplicity for 0.5TT2 in most-central to midcentral d+Au and 3He+Au collisions. However, the AMPT model systematically overestimates the measurements in p+p, p+Au, and peripheral d+Au and 3He+Au collisions, indicating a higher nonflow contribution in AMPT than in the experimental data. The AMPT model fails to describe the observed R for 0.5TT Copyright © 2022, The Authors. All rights reserved.

关键词： Germanium alloys

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Charm- and Bottom-Quark Production in Au+Au Collisions at √sNN = 200 GeV

arXiv

引用

arXiv 2022年

作者： Abdulameer, N.J. Acharya, U. Adare, A. Aidala, C. Ajitanand, N.N. Akiba, Y. Alfred, M. Apadula, N. Asano, H. Azmoun, B. Babintsev, V. Bai, M. Bandara, N.S. Bannier, B. Barish, K.N. Bathe, S. Bazilevsky, A. Beaumier, M. Beckman, S. Belmont, R. Berdnikov, A. Berdnikov, Y. Bichon, L. Blankenship, B. Blau, D.S. Bok, J.S. Borisov, V. Boyle, K. Brooks, M.L. Bryslawskyj, J. Bumazhnov, V. Campbell, S. Canoa Roman, V. Chen, C.-H. Chiu, M. Chi, C.Y. Choi, I.J. Choi, J.B. Chujo, T. Citron, Z. Connors, M. Corliss, R. Corrales Morales, Y. Csanád, M. Csörgo, T. Danley, T.W. Datta, A. Daugherity, M.S. David, G. Dean, C.T. DeBlasio, K. Dehmelt, K. Denisov, A. Deshpande, A. Desmond, E.J. Dion, A. Diss, P.B. Do, J.H. Doomra, V. Drees, A. Drees, K.A. Durham, J.M. Durum, A. Enokizono, A. Esha, R. Fadem, B. Fan, W. Feege, N. Fields, D.E. Finger, M. Finger, M. Firak, D. Fitzgerald, D. Fokin, S.L. Frantz, J.E. Franz, A. Frawley, A.D. Gallus, P. Gal, C. Garg, P. Ge, H. Giles, M. Giordano, F. Glenn, A. Goto, Y. Grau, N. Greene, S.V. Grosse Perdekamp, M. Gunji, T. Hachiya, T. Haggerty, J.S. Hahn, K.I. Hamagaki, H. Hamilton, H.F. Hanks, J. Han, S.Y. Harvey, M. Hasegawa, S. Haseler, T.O.S. Hashimoto, K. Hemmick, T.K. He, X. Hill, J.C. Hodges, A. Hollis, R.S. Homma, K. Hong, B. Hoshino, T. Hotvedt, N. Huang, J. Imai, K. Inaba, M. Iordanova, A. Isenhower, D. Ivanishchev, D. Jacak, B.V. Jezghani, M. Jiang, X. Ji, Z. Johnson, B.M. Jouan, D. Jumper, D.S. Kanda, S. Kang, J.H. Kawall, D. Kazantsev, A.V. Key, J.A. Khachatryan, V. Khanzadeev, A. Khatiwada, A. Kimelman, B. Kim, C. Kim, D.J. Kim, E.-J. Kim, G.W. Kim, M. Kim, T. Kincses, D. Kingan, A. Kistenev, E. Kitamura, R. Klatsky, J. Kleinjan, D. Kline, P. Koblesky, T. Komkov, B. Kotov, D. Kovacs, L. Kurgyis, B. Kurita, K. Kurosawa, M. Kwon, Y. Lajoie, J.G. Larionova, D. Lebedev, A. Lee, S. Lee, S.H. Leitch, M.J. Lewis, N.A. Lim, S.H. Abilene Christian University AbileneTX79699 United States Department of Physics Augustana University Sioux FallsSD57197 United States Department of Physics Banaras Hindu University Varanasi221005 India Bhabha Atomic Research Centre Bombay400 085 India Baruch College City University of New York New YorkNY10010 United States Collider-Accelerator Department Brookhaven National Laboratory UptonNY11973-5000 United States Physics Department Brookhaven National Laboratory UptonNY11973-5000 United States University of California-Riverside RiversideCA92521 United States Charles University Faculty of Mathematics and Physics Troja Prague180 00 Czech Republic Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing102413 China Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo113-0033 Japan University of Colorado BoulderCO80309 United States Columbia University New YorkNY10027 United States Nevis Laboratories IrvingtonNY10533 United States Czech Technical University Zikova 4 Prague 6166 36 Czech Republic Debrecen University Egyetem tér 1 DebrecenH-4010 Hungary ELTE Eötvös Loránd University Pázmány P. s. 1/A BudapestH-1117 Hungary Ewha Womans University Seoul120-750 Korea Republic of Florida A&M University TallahasseeFL32307 United States Florida State University TallahasseeFL32306 United States Georgia State University AtlantaGA30303 United States Hiroshima University Hiroshima Higashi-Hiroshima739-8526 Japan Department of Physics and Astronomy Howard University WashingtonDC20059 United States IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino142281 Russia University of Illinois at Urbana-Champaign UrbanaIL61801 United States Institute for Nuclear Research of the Russian Academy of Sciences prospekt 60-letiya Oktyabrya 7a Moscow117312 Russia Institute of Physics Academy of Sciences

The invariant yield of electrons from open-heavy-flavor decays for 1 NN = 200 GeV has been measured by the PHENIX experiment at the Relativistic Heavy Ion Collider. A displaced-vertex analysis with the PHENIX silicon-vertex detector enables extraction of the fraction of charm and bottom hadron decays and unfolding of the invariant yield of parent charm and bottom hadrons. The nuclear-modification factors RAA for electrons from charm and bottom hadron decays and heavy-flavor hadrons show both a centrality and a quark-mass dependence, indicating suppression in the quark-gluon plasma produced in these collisions that is medium sized and quark-mass dependent. © 2022, CC BY.

关键词： Hadrons

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Study of φ meson production in p+Al, p+Au, d+Au, and 3He+Au collisions at √sNN = 200 GeV

arXiv

引用

arXiv 2022年

作者： Acharya, U. Adare, A. Aidala, C. Ajitanand, N.N. Akiba, Y. Alfred, M. Andrieux, V. Apadula, N. Asano, H. Azmoun, B. Babintsev, V. Bai, M. Bandara, N.S. Bannier, B. Barish, K.N. Bathe, S. Bazilevsky, A. Beaumier, M. Beckman, S. Belmont, R. Berdnikov, A. Berdnikov, Y. Bichon, L. Blankenship, B. Blau, D.S. Bok, J.S. Borisov, V. Boyle, K. Brooks, M.L. Bryslawskyj, J. Bumazhnov, V. Campbell, S. Canoa Roman, V. Cervantes, R. Chen, C.-H. Chiu, M. Chi, C.Y. Choi, I.J. Choi, J.B. Chujo, T. Citron, Z. Connors, M. Corliss, R. Corrales Morales, Y. Cronin, N. Csanád, M. Csörgo, T. Danley, T.W. Datta, A. Daugherity, M.S. David, G. Dean, C.T. DeBlasio, K. Dehmelt, K. Denisov, A. Deshpande, A. Desmond, E.J. Dion, A. Diss, P.B. Dixit, D. Do, J.H. Doomra, V. Drees, A. Drees, K.A. Durham, J.M. Durum, A. En'yo, H. Enokizono, A. Esha, R. Esumi, S. Fadem, B. Fan, W. Feege, N. Fields, D.E. Finger, M. Finger, M. Firak, D. Fitzgerald, D. Fokin, S.L. Frantz, J.E. Franz, A. Frawley, A.D. Fukuda, Y. Gallus, P. Gal, C. Garg, P. Ge, H. Giles, M. Giordano, F. Glenn, A. Goto, Y. Grau, N. Greene, S.V. Grosse Perdekamp, M. Gunji, T. Guragain, H. Hachiya, T. Haggerty, J.S. Hahn, K.I. Hamagaki, H. Hamilton, H.F. Hanks, J. Han, S.Y. Harvey, M. Hasegawa, S. Haseler, T.O.S. Hashimoto, K. Hemmick, T.K. He, X. Hill, J.C. Hill, K. Hodges, A. Hollis, R.S. Homma, K. Hong, B. Hoshino, T. Hotvedt, N. Huang, J. Imai, K. Inaba, M. Iordanova, A. Isenhower, D. Ivanishchev, D. Jacak, B.V. Jezghani, M. Jiang, X. Ji, Z. Johnson, Brant M. Jouan, D. Jumper, D.S. Kanda, S. Kang, J.H. Kapukchyan, D. Karthas, S. Kawall, D. Kazantsev, A.V. Key, J.A. Khachatryan, V. Khanzadeev, A. Khatiwada, A. Kimelman, B. Kim, C. Kim, D.J. Kim, E.-J. Kim, G.W. Kim, M. Kim, T. Kincses, D. Kingan, A. Kistenev, E. Kitamura, R. Klatsky, J. Kleinjan, D. Kline, P. Koblesky, T. Komkov, B. Kotov, D. Kovacs, L. Kudo, S. Kurgyis, B. Kurita, K. Abilene Christian University AbileneTX79699 United States Department of Physics Augustana University Sioux FallsSD57197 United States Department of Physics Banaras Hindu University Varanasi221005 India Bhabha Atomic Research Centre Bombay400 085 India Baruch College City University of New York New YorkNY10010 United States Collider-Accelerator Department Brookhaven National Laboratory UptonNY11973-5000 United States Physics Department Brookhaven National Laboratory UptonNY11973-5000 United States University of California-Riverside RiversideCA92521 United States Charles University Ovocný trh 5 Praha 1 Prague116 36 Czech Republic Science and Technology on Nuclear Data Laboratory China Institute of Atomic Energy Beijing102413 China Center for Nuclear Study Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo Tokyo113-0033 Japan University of Colorado BoulderCO80309 United States Columbia University New York New York10027 United States Nevis Laboratories IrvingtonNY10533 United States Czech Technical University Zikova 4 Prague 6166 36 Czech Republic Debrecen University Egyetem tér 1 DebrecenH-4010 Hungary ELTE Eötvös Loránd University Pázmány P. s. 1/A BudapestH-1117 Hungary Ewha Womans University Seoul120-750 Korea Republic of Florida A&M University TallahasseeFL32307 United States Florida State University TallahasseeFL32306 United States Georgia State University AtlantaGA30303 United States Hiroshima University Kagamiyama Higashi-Hiroshima739-8526 Japan Department of Physics and Astronomy Howard University WashingtonDC20059 United States IHEP Protvino State Research Center of Russian Federation Institute for High Energy Physics Protvino142281 Russia University of Illinois at Urbana-Champaign UrbanaIL61801 United States Institute for Nuclear Research The Russian Academy of Sciences prospekt 60-letiya Oktyabrya 7a Moscow117312 Russia Institute of Physics Academy of Sciences of the Czech Rep

Small nuclear collisions are mainly sensitive to cold-nuclear-matter effects;however, the collective behavior observed in these collisions shows a hint of hot-nuclear-matter effects. The identified-particle spectra, especially the φ mesons which contain strange and antistrange quarks and have a relatively small hadronic-interaction cross section, are a good tool to study these effects. The PHENIX experiment has measured φ mesons in a specific set of small collision systems p+Al, p+Au, and 3He+Au, as well as d+Au [Phys. Rev. C 83, 024909 (2011)], at √sNN = 200 GeV. The transverse-momentum spectra and nuclear-modification factors are presented and compared to theoretical-model predictions. The comparisons with different calculations suggest that quark-gluon plasma may be formed in these small collision systems at √sNN = 200 GeV. However, the volume and the lifetime of the produced medium may be insufficient for observing strangeness-enhancement and jet-quenching effects. The comparison with calculations suggests that the main production mechanisms of φ mesons at midrapidity may be different in p+Al versus p/d/3He+Au collisions at √sNN = 200 GeV. While thermal quark recombination seems to dominate in p/d/3He+Au collisions, fragmentation seems to be the main production mechanism in p+Al collisions. Copyright © 2022, The Authors. All rights reserved.

关键词： Germanium alloys

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Industrial engineering students' perceptions of the logistics and supply chain industry 123

Industrial engineering students' perceptions of the logistic...

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123rd ASEE Annual Conference and Exposition

作者： Scherrer, Christina R. Maloni, Michael Boyd, Elizabeth M. Campbell, Stacy M. Southern Polytechnic College of Engineering and Engineering Technology Kennesaw State University United States

A shortage of logistics and supply chain talent is a significant and growing problem in the industry. However, little research has been done to study why industrial engineering (IE) students are not entering the field in sufficient numbers. This paper addresses several questions to begin to close that knowledge gap. First, what are undergraduate IE students' awareness of and interest in the logistics and supply chain industry? Second, what are IE students' desired job attributes? Finally, are there differences between IE students' responses to these questions and those of business students that would suggest a need to market to IE students differently? Data is collected from more than 1,500 undergraduate industrial engineering and business students throughout the state of Georgia. Analysis is presented for various demographics, including gender, age, and ethnicity. © American Society for engineering Education, 2016.

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