Observation of tt[over ¯] Production in Pb+Pb Collisions at sqrt[s_{NN}]=5.02 TeV with the ATLAS Detector
Affiliations
- 1 CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France.
- 2 Department for Physics and Technology, University of Bergen, Bergen, Norway.
- 3 Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma, USA.
- 4 New York University Abu Dhabi, Abu Dhabi, United Arab Emirates.
- 5 II. Physikalisches Institut, Georg-August-Universität Göttingen, Göttingen, Germany.
- 6 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
- 7 Physics Department, Brookhaven National Laboratory, Upton, New York, USA.
- 8 Physics Department, Southern Methodist University, Dallas, Texas, USA.
- 9 Faculté des sciences, Université Mohammed V, Rabat, Morocco.
- 10 Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel.
- 11 Department of Physics, New York University, New York, New York, USA.
- 12 INFN Gruppo Collegato di Udine, Sezione di Trieste, Udine, Italy.
- 13 ICTP, Trieste, Italy.
- 14 Kirchhoff-Institut für Physik, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 15 LAPP, Université Savoie Mont Blanc, CNRS/IN2P3, Annecy, France.
- 16 AGH University of Krakow, Faculty of Physics and Applied Computer Science, Krakow, Poland.
- 17 SLAC National Accelerator Laboratory, Stanford, California, USA.
- 18 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 19 Department of Physics, Northern Illinois University, DeKalb, Illinois, USA.
- 20 Department of Physics, Istanbul University, Istanbul, Türkiye.
- 21 Particle Physics Department, Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 22 Santa Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, California, USA.
- 23 Enrico Fermi Institute, University of Chicago, Chicago, Illinois, USA.
- 24 Institut de Física d'Altes Energies (IFAE), Barcelona Institute of Science and Technology, Barcelona, Spain.
- 25 Institut für Physik, Universität Mainz, Mainz, Germany.
- 26 Department of Physics, Alexandru Ioan Cuza University of Iasi, Iasi, Romania.
- 27 Affiliated with an international laboratory covered by a cooperation agreement with CERN.
- 28 Department of Physics, Royal Holloway University of London, Egham, United Kingdom.
- 29 School of Physics, Zhengzhou University, Zhengzhou, China.
- 30 INFN Sezione di Roma Tor Vergata, Roma, Italy.
- 31 Dipartimento di Fisica, Università di Roma Tor Vergata, Roma, Italy.
- 32 Instituto de Física Corpuscular (IFIC), Centro Mixto Universidad de Valencia - CSIC, Valencia, Spain.
- 33 Faculté des Sciences Ain Chock, Université Hassan II de Casablanca, Casablanca, Morocco.
- 34 Fysiska institutionen, Lunds universitet, Lund, Sweden.
- 35 Departments of Physics and Astronomy, Stony Brook University, Stony Brook, New York, USA.
- 36 Waseda University, Tokyo, Japan.
- 37 Physikalisches Institut, Universität Bonn, Bonn, Germany.
- 38 Department of Physics, Bogazici University, Istanbul, Türkiye.
- 39 Nevis Laboratory, Columbia University, Irvington, New York, USA.
- 40 INFN Sezione di Bologna, Bologna, Italy.
- 41 Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia, Canada.
- 42 INFN e Laboratori Nazionali di Frascati, Frascati, Italy.
- 43 LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble INP, Grenoble, France.
- 44 SUPA - School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 45 Department of Physics, Oklahoma State University, Stillwater, Oklahoma, USA.
- 46 CERN, Geneva, Switzerland.
- 47 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, Romania.
- 48 Physics Department, National Technical University of Athens, Zografou, Greece.
- 49 Département de Physique Nucléaire et Corpusculaire, Université de Genève, Genève, Switzerland.
- 50 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 51 Czech Technical University in Prague, Prague, Czech Republic.
- 52 Physics Department, Lancaster University, Lancaster, United Kingdom.
- 53 California State University, Los Angeles, California, USA.
- 54 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 55 Department of Mechanical Engineering Science, University of Johannesburg, Johannesburg, South Africa.
- 56 INFN Sezione di Milano, Milano, Italy.
- 57 IJCLab, Université Paris-Saclay, CNRS/IN2P3, 91405, Orsay, France.
- 58 Department of Physics and Astronomy, University of Sussex, Brighton, United Kingdom.
- 59 Departamento de Física, Universidad Técnica Federico Santa María, Valparaíso, Chile.
- 60 School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom.
- 61 INFN Sezione di Napoli, Napoli, Italy.
- 62 Dipartimento di Fisica, Università di Napoli, Napoli, Italy.
- 63 Instituto de Física La Plata, Universidad Nacional de La Plata and CONICET, La Plata, Argentina.
- 64 Department of Physics, University of Washington, Seattle, Washington, USA.
- 65 Universidade Federal do Rio De Janeiro COPPE/EE/IF, Rio de Janeiro, Brazil.
- 66 Department of Physics, McGill University, Montreal, Quebec, Canada.
- 67 Fakultät für Physik, Ludwig-Maximilians-Universität München, München, Germany.
- 68 Department of Physics, University of Michigan, Ann Arbor, Michigan, USA.
- 69 Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany.
- 70 Department of Physics, University of Toronto, Toronto, Ontario, Canada.
- 71 Laboratório de Instrumentação e Física Experimental de Partículas - LIP, Lisboa, Portugal.
- 72 Department of Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece.
- 73 KEK, High Energy Accelerator Research Organization, Tsukuba, Japan.
- 74 Department of Physics, University of Oslo, Oslo, Norway.
- 75 Department of Physics and Astronomy, University of Sheffield, Sheffield, United Kingdom.
- 76 Department of Physics, University of Texas at Austin, Austin, Texas, USA.
- 77 SUPA - School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
- 78 Dipartimento di Fisica, Università di Milano, Milano, Italy.
- 79 Physics Department, National and Kapodistrian University of Athens, Athens, Greece.
- 80 Affiliated with an institute covered by a cooperation agreement with CERN.
- 81 INFN Sezione di Pisa, Pisa, Italy.
- 82 INFN Sezione di Roma, Roma, Italy.
- 83 International Center for Elementary Particle Physics and Department of Physics, University of Tokyo, Tokyo, Japan.
- 84 Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany.
- 85 Department of Physics, Brandeis University, Waltham, Massachusetts, USA.
- 86 Institute of Nuclear Physics Polish Academy of Sciences, Krakow, Poland.
- 87 Department of Physics, Duke University, Durham, North Carolina, USA.
- 88 Group of Particle Physics, University of Montreal, Montreal, Quebec, Canada.
- 89 Dipartimento di Fisica, Sapienza Università di Roma, Roma, Italy.
- 90 Graduate School of Science and Kobayashi-Maskawa Institute, Nagoya University, Nagoya, Japan.
- 91 Ochanomizu University, Otsuka, Bunkyo-ku, Tokyo, Japan.
- 92 Faculty of Mathematics, Physics and Informatics, Comenius University, Bratislava, Slovak Republic.
- 93 Department of Physics and Astronomy, University of California Irvine, Irvine, California, USA.
- 94 Department of Physics, University of Cape Town, Cape Town, South Africa.
- 95 Institute of Applied Physics, Mohammed VI Polytechnic University, Ben Guerir, Morocco.
- 96 Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
- 97 LPC, Université Clermont Auvergne, CNRS/IN2P3, Clermont-Ferrand, France.
- 98 Department of Subnuclear Physics, Institute of Experimental Physics of the Slovak Academy of Sciences, Kosice, Slovak Republic.
- 99 IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France.
- 100 Department of Physics, Carleton University, Ottawa, Ontario, Canada.
- 101 Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany.
- 102 Institut für Physik, Humboldt Universität zu Berlin, Berlin, Germany.
- 103 Institute for Fundamental Science, University of Oregon, Eugene, Oregon, USA.
- 104 School of Physics and Astronomy, Queen Mary University of London, London, United Kingdom.
- 105 Department of Physics, Yale University, New Haven, Connecticut, USA.
- 106 Institute of Physics, University of Belgrade, Belgrade, Serbia.
- 107 Department of Physics, University of Texas at Arlington, Arlington, Texas, USA.
- 108 Dipartimento di Fisica e Astronomia A. Righi, Università di Bologna, Bologna, Italy.
- 109 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 110 United Arab Emirates University, Al Ain, United Arab Emirates.
- 111 Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
- 112 School of Physics, University of Melbourne, Victoria, Australia.
- 113 Dipartimento di Fisica, Università di Genova, Genova, Italy.
- 114 INFN Sezione di Genova, Genova, Italy.
- 115 Nikhef National Institute for Subatomic Physics and University of Amsterdam, Amsterdam, Netherlands.
- 116 Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), München, Germany.
- 117 Palacký University, Joint Laboratory of Optics, Olomouc, Czech Republic.
- 118 Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei, China.
- 119 Department of Physics, Oxford University, Oxford, United Kingdom.
- 120 Department of Physics and Astronomy, University College London, London, United Kingdom.
- 121 Departamento de Física Teorica C-15 and CIAFF, Universidad Autónoma de Madrid, Madrid, Spain.
- 122 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China.
- 123 TRIUMF, Vancouver, British Columbia, Canada.
- 124 Department of Physics, University of British Columbia, Vancouver, British Columbia, Canada.
- 125 Department Physik, Universität Siegen, Siegen, Germany.
- 126 Universität Innsbruck, Department of Astro and Particle Physics, Innsbruck, Austria.
- 127 Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Física, y CONICET, Instituto de Física de Buenos Aires (IFIBA), Buenos Aires, Argentina.
- 128 LPNHE, Sorbonne Université, Université Paris Cité, CNRS/IN2P3, Paris, France.
- 129 Department of Physics and Astronomy, Tufts University, Medford, Massachusetts, USA.
- 130 Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics, University of Bern, Bern, Switzerland.
- 131 Istinye University, Sariyer, Istanbul, Türkiye.
- 132 Rio de Janeiro State University, Rio de Janeiro, Brazil.
- 133 Laboratory for Particle Physics and Cosmology, Harvard University, Cambridge, Massachusetts, USA.
- 134 Department of Physics and Astronomy, University of Uppsala, Uppsala, Sweden.
- 135 Physics Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA.
- 136 APC, Université Paris Cité, CNRS/IN2P3, Paris, France.
- 137 Charles University, Faculty of Mathematics and Physics, Prague, Czech Republic.
- 138 Fakultät für Physik und Astronomie, Julius-Maximilians-Universität Würzburg, Würzburg, Germany.
- 139 INFN Sezione di Roma Tre, Roma, Italy.
- 140 Fakultät für Mathematik und Naturwissenschaften, Fachgruppe Physik, Bergische Universität Wuppertal, Wuppertal, Germany.
- 141 Department of Physics Engineering, Gaziantep University, Gaziantep, Türkiye.
- 142 Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot, Israel.
- 143 Dipartimento di Fisica, Università della Calabria, Rende, Italy.
- 144 INFN Gruppo Collegato di Cosenza, Laboratori Nazionali di Frascati, Cosenza, Italy.
- 145 Department of Physics, Stockholm University, Stockholm, Sweden.
- 146 The Ohio State University, Columbus, Ohio, USA.
- 147 Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA.
- 148 INFN-TIFPA, Trento, Italy.
- 149 Università degli Studi di Trento, Trento, Italy.
- 150 Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan, USA.
- 151 Department of Physics, Indiana University, Bloomington, Indiana, USA.
- 152 Department of Physics and Astronomy, York University, Toronto, Ontario, Canada.
- 153 Oskar Klein Centre, Stockholm, Sweden.
- 154 Department of Physics, University of Illinois, Urbana, Illinois, USA.
- 155 Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada.
- 156 Department of Physics, Boston University, Boston, Massachusetts, USA.
- 157 II. Physikalisches Institut, Justus-Liebig-Universität Giessen, Giessen, Germany.
- 158 University of Chinese Academy of Science (UCAS), Beijing, China.
- 159 Department of Physics, Nanjing University, Nanjing, China.
- 160 Department of Physics, Ankara University, Ankara, Türkiye.
- 161 Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark.
- 162 Institute for Mathematics, Astrophysics and Particle Physics, Radboud University/Nikhef, Nijmegen, Netherlands.
- 163 Departamento de Física, Escola de Ciências, Universidade do Minho, Braga, Portugal.
- 164 Departamento de Física, Universidad Nacional de Colombia, Bogotá, Colombia.
- 165 Departamento de Engenharia Elétrica, Universidade Federal de Juiz de Fora (UFJF), Juiz de Fora, Brazil.
- 166 High Energy Physics Institute, Tbilisi State University, Tbilisi, Georgia.
- 167 High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois, USA.
- 168 School of Physics and Astronomy, Shanghai Jiao Tong University, Key Laboratory for Particle Astrophysics and Cosmology (MOE), SKLPPC, Shanghai, China.
- 169 Faculty of Science, Kyoto University, Kyoto, Japan.
- 170 Physics Department, Tsinghua University, Beijing, China.
- 171 Department of Physics, University of Wisconsin, Madison, Wisconsin, USA.
- 172 Department of Physics, Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.
- 173 Department of Physics, University of Arizona, Tucson, Arizona, USA.
- 174 Department of Physics, National Tsing Hua University, Hsinchu, Taiwan.
- 175 INFN Sezione di Lecce, Lecce, Italy.
- 176 Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic.
- 177 Department of Experimental Particle Physics, Jožef Stefan Institute and Department of Physics, University of Ljubljana, Ljubljana, Slovenia.
- 178 Dipartimento Politecnico di Ingegneria e Architettura, Università di Udine, Udine, Italy.
- 179 Departamento de Física, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal.
- 180 Institute of Physics, Academia Sinica, Taipei, Taiwan.
- 181 Dipartimento di Matematica e Fisica, Università del Salento, Lecce, Italy.
- 182 Dipartimento di Matematica e Fisica, Università Roma Tre, Roma, Italy.
- 183 Departamento de Física, Pontificia Universidad Católica de Chile, Santiago, Chile.
- 184 Millennium Institute for Subatomic physics at high energy frontier (SAPHIR), Santiago, Chile.
- 185 Department of Physics, Royal Institute of Technology, Stockholm, Sweden.
- 186 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 187 Faculty of Physics, University of Bucharest, Bucharest, Romania.
- 188 Federal University of Bahia, Bahia, Brazil.
- 189 Faculté des Sciences, Université Ibn-Tofail, Kénitra, Morocco.
- 190 Departamento de Física, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal.
- 191 Department of Physics, University of Hong Kong, Hong Kong, China.
- 192 Louisiana Tech University, Ruston, Louisiana, USA.
- 193 Institute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Qingdao, China.
- 194 Centro Nacional de Microelectrónica (IMB-CNM-CSIC), Barcelona, Spain.
- 195 INFN Sezione di Pavia, Pavia, Italy.
- 196 Department of Physics, University of Adelaide, Adelaide, Australia.
- 197 Departamento de Física, Universidade de Coimbra, Coimbra, Portugal.
- 198 National Institute of Physics, University of the Philippines Diliman (Philippines), Quezon City, Philippines.
- 199 Dipartimento di Fisica E. Fermi, Università di Pisa, Pisa, Italy.
- 200 University of Sharjah, Sharjah, United Arab Emirates.
- 201 Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico, USA.
- 202 National Centre for Scientific Research "Demokritos", Agia Paraskevi, Greece.
- 203 Marian Smoluchowski Institute of Physics, Jagiellonian University, Krakow, Poland.
- 204 Department of Physics, University of Alberta, Edmonton, Alberta, Canada.
- 205 University of Georgia, Tbilisi, Georgia.
- 206 West University in Timisoara, Timisoara, Romania.
- 207 Yerevan Physics Institute, Yerevan, Armenia.
- 208 Department of Physics, Shinshu University, Nagano, Japan.
- 209 Graduate School of Science, Osaka University, Osaka, Japan.
- 210 Division of Physics and Tomonaga Center for the History of the Universe, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Japan.
- 211 National University of Science and Technology Politechnica, Bucharest, Romania.
- 212 Institute of Physics, Azerbaijan Academy of Sciences, Baku, Azerbaijan.
- 213 Instituto de Física, Universidade de São Paulo, São Paulo, Brazil.
- 214 Instituto de Investigación Multidisciplinario en Ciencia y Tecnología, y Departamento de Física, Universidad de La Serena, Coquimbo, Chile.
- 215 Dipartimento di Fisica, Università di Pavia, Pavia, Italy.
- 216 Physics Department, University of Texas at Dallas, Richardson, Texas, USA.
- 217 E. Andronikashvili Institute of Physics, Iv. Javakhishvili Tbilisi State University, Tbilisi, Georgia.
- 218 Department of Physics, Institute of Science, Tokyo, Japan.
- 219 Instituto de Alta Investigación, Universidad de Tarapacá, Arica, Chile.
- 220 Department of Physics, Technion, Israel Institute of Technology, Haifa, Israel.
- 221 School of Physics, University of the Witwatersrand, Johannesburg, South Africa.
- 222 Department of Physics and Astronomy, Iowa State University, Ames, Iowa, USA.
- 223 Universidad Andres Bello, Department of Physics, Santiago, Chile.
- 224 Graduate School of Science, Kobe University, Kobe, Japan.
- 225 Affiliated with an institute formerly covered by a cooperation agreement with CERN.
- 226 Tsung-Dao Lee Institute, Shanghai, China.
- 227 Department of Physics and Institute for Advanced Study, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
- 228 School of Science, Shenzhen Campus of Sun Yat-sen University, China.
- 229 Centro de Física Nuclear da Universidade de Lisboa, Lisboa, Portugal.
- 230 University of Iowa, Iowa City, Iowa, USA.
- 231 L2IT, Université de Toulouse, CNRS/IN2P3, UPS, Toulouse, France.
- 232 Research Center for Advanced Particle Physics and Department of Physics, Kyushu University, Fukuoka, Japan.
- 233 LPMR, Faculté des Sciences, Université Mohamed Premier, Oujda, Morocco.
- 234 Facultad de Ciencias y Centro de Investigaciónes, Universidad Antonio Nariño, Bogotá, Colombia.
- 235 School of Physics, University of Sydney, Sydney, Australia.
- 236 Transilvania University of Brasov, Brasov, Romania.
- 237 National Institute for Research and Development of Isotopic and Molecular Technologies, Physics Department, Cluj-Napoca, Romania.
- 238 University of West Attica, Athens, Greece.
- 239 Division of Physics, TOBB University of Economics and Technology, Ankara, Türkiye.
- 240 University of California, Berkeley, California, USA.
- PMID: 40279599
- DOI: 10.1103/PhysRevLett.134.142301
Observation of tt[over ¯] Production in Pb+Pb Collisions at sqrt[s_{NN}]=5.02 TeV with the ATLAS Detector
Authors
Affiliations
- 1 CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France.
- 2 Department for Physics and Technology, University of Bergen, Bergen, Norway.
- 3 Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma, USA.
- 4 New York University Abu Dhabi, Abu Dhabi, United Arab Emirates.
- 5 II. Physikalisches Institut, Georg-August-Universität Göttingen, Göttingen, Germany.
- 6 Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany.
- 7 Physics Department, Brookhaven National Laboratory, Upton, New York, USA.
- 8 Physics Department, Southern Methodist University, Dallas, Texas, USA.
- 9 Faculté des sciences, Université Mohammed V, Rabat, Morocco.
- 10 Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv, Israel.
- 11 Department of Physics, New York University, New York, New York, USA.
- 12 INFN Gruppo Collegato di Udine, Sezione di Trieste, Udine, Italy.
- 13 ICTP, Trieste, Italy.
- 14 Kirchhoff-Institut für Physik, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 15 LAPP, Université Savoie Mont Blanc, CNRS/IN2P3, Annecy, France.
- 16 AGH University of Krakow, Faculty of Physics and Applied Computer Science, Krakow, Poland.
- 17 SLAC National Accelerator Laboratory, Stanford, California, USA.
- 18 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom.
- 19 Department of Physics, Northern Illinois University, DeKalb, Illinois, USA.
- 20 Department of Physics, Istanbul University, Istanbul, Türkiye.
- 21 Particle Physics Department, Rutherford Appleton Laboratory, Didcot, United Kingdom.
- 22 Santa Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, California, USA.
- 23 Enrico Fermi Institute, University of Chicago, Chicago, Illinois, USA.
- 24 Institut de Física d'Altes Energies (IFAE), Barcelona Institute of Science and Technology, Barcelona, Spain.
- 25 Institut für Physik, Universität Mainz, Mainz, Germany.
- 26 Department of Physics, Alexandru Ioan Cuza University of Iasi, Iasi, Romania.
- 27 Affiliated with an international laboratory covered by a cooperation agreement with CERN.
- 28 Department of Physics, Royal Holloway University of London, Egham, United Kingdom.
- 29 School of Physics, Zhengzhou University, Zhengzhou, China.
- 30 INFN Sezione di Roma Tor Vergata, Roma, Italy.
- 31 Dipartimento di Fisica, Università di Roma Tor Vergata, Roma, Italy.
- 32 Instituto de Física Corpuscular (IFIC), Centro Mixto Universidad de Valencia - CSIC, Valencia, Spain.
- 33 Faculté des Sciences Ain Chock, Université Hassan II de Casablanca, Casablanca, Morocco.
- 34 Fysiska institutionen, Lunds universitet, Lund, Sweden.
- 35 Departments of Physics and Astronomy, Stony Brook University, Stony Brook, New York, USA.
- 36 Waseda University, Tokyo, Japan.
- 37 Physikalisches Institut, Universität Bonn, Bonn, Germany.
- 38 Department of Physics, Bogazici University, Istanbul, Türkiye.
- 39 Nevis Laboratory, Columbia University, Irvington, New York, USA.
- 40 INFN Sezione di Bologna, Bologna, Italy.
- 41 Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia, Canada.
- 42 INFN e Laboratori Nazionali di Frascati, Frascati, Italy.
- 43 LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble INP, Grenoble, France.
- 44 SUPA - School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom.
- 45 Department of Physics, Oklahoma State University, Stillwater, Oklahoma, USA.
- 46 CERN, Geneva, Switzerland.
- 47 Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, Romania.
- 48 Physics Department, National Technical University of Athens, Zografou, Greece.
- 49 Département de Physique Nucléaire et Corpusculaire, Université de Genève, Genève, Switzerland.
- 50 Department of Physics, University of Warwick, Coventry, United Kingdom.
- 51 Czech Technical University in Prague, Prague, Czech Republic.
- 52 Physics Department, Lancaster University, Lancaster, United Kingdom.
- 53 California State University, Los Angeles, California, USA.
- 54 Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom.
- 55 Department of Mechanical Engineering Science, University of Johannesburg, Johannesburg, South Africa.
- 56 INFN Sezione di Milano, Milano, Italy.
- 57 IJCLab, Université Paris-Saclay, CNRS/IN2P3, 91405, Orsay, France.
- 58 Department of Physics and Astronomy, University of Sussex, Brighton, United Kingdom.
- 59 Departamento de Física, Universidad Técnica Federico Santa María, Valparaíso, Chile.
- 60 School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom.
- 61 INFN Sezione di Napoli, Napoli, Italy.
- 62 Dipartimento di Fisica, Università di Napoli, Napoli, Italy.
- 63 Instituto de Física La Plata, Universidad Nacional de La Plata and CONICET, La Plata, Argentina.
- 64 Department of Physics, University of Washington, Seattle, Washington, USA.
- 65 Universidade Federal do Rio De Janeiro COPPE/EE/IF, Rio de Janeiro, Brazil.
- 66 Department of Physics, McGill University, Montreal, Quebec, Canada.
- 67 Fakultät für Physik, Ludwig-Maximilians-Universität München, München, Germany.
- 68 Department of Physics, University of Michigan, Ann Arbor, Michigan, USA.
- 69 Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany.
- 70 Department of Physics, University of Toronto, Toronto, Ontario, Canada.
- 71 Laboratório de Instrumentação e Física Experimental de Partículas - LIP, Lisboa, Portugal.
- 72 Department of Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece.
- 73 KEK, High Energy Accelerator Research Organization, Tsukuba, Japan.
- 74 Department of Physics, University of Oslo, Oslo, Norway.
- 75 Department of Physics and Astronomy, University of Sheffield, Sheffield, United Kingdom.
- 76 Department of Physics, University of Texas at Austin, Austin, Texas, USA.
- 77 SUPA - School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom.
- 78 Dipartimento di Fisica, Università di Milano, Milano, Italy.
- 79 Physics Department, National and Kapodistrian University of Athens, Athens, Greece.
- 80 Affiliated with an institute covered by a cooperation agreement with CERN.
- 81 INFN Sezione di Pisa, Pisa, Italy.
- 82 INFN Sezione di Roma, Roma, Italy.
- 83 International Center for Elementary Particle Physics and Department of Physics, University of Tokyo, Tokyo, Japan.
- 84 Deutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, Germany.
- 85 Department of Physics, Brandeis University, Waltham, Massachusetts, USA.
- 86 Institute of Nuclear Physics Polish Academy of Sciences, Krakow, Poland.
- 87 Department of Physics, Duke University, Durham, North Carolina, USA.
- 88 Group of Particle Physics, University of Montreal, Montreal, Quebec, Canada.
- 89 Dipartimento di Fisica, Sapienza Università di Roma, Roma, Italy.
- 90 Graduate School of Science and Kobayashi-Maskawa Institute, Nagoya University, Nagoya, Japan.
- 91 Ochanomizu University, Otsuka, Bunkyo-ku, Tokyo, Japan.
- 92 Faculty of Mathematics, Physics and Informatics, Comenius University, Bratislava, Slovak Republic.
- 93 Department of Physics and Astronomy, University of California Irvine, Irvine, California, USA.
- 94 Department of Physics, University of Cape Town, Cape Town, South Africa.
- 95 Institute of Applied Physics, Mohammed VI Polytechnic University, Ben Guerir, Morocco.
- 96 Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
- 97 LPC, Université Clermont Auvergne, CNRS/IN2P3, Clermont-Ferrand, France.
- 98 Department of Subnuclear Physics, Institute of Experimental Physics of the Slovak Academy of Sciences, Kosice, Slovak Republic.
- 99 IRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, France.
- 100 Department of Physics, Carleton University, Ottawa, Ontario, Canada.
- 101 Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany.
- 102 Institut für Physik, Humboldt Universität zu Berlin, Berlin, Germany.
- 103 Institute for Fundamental Science, University of Oregon, Eugene, Oregon, USA.
- 104 School of Physics and Astronomy, Queen Mary University of London, London, United Kingdom.
- 105 Department of Physics, Yale University, New Haven, Connecticut, USA.
- 106 Institute of Physics, University of Belgrade, Belgrade, Serbia.
- 107 Department of Physics, University of Texas at Arlington, Arlington, Texas, USA.
- 108 Dipartimento di Fisica e Astronomia A. Righi, Università di Bologna, Bologna, Italy.
- 109 Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom.
- 110 United Arab Emirates University, Al Ain, United Arab Emirates.
- 111 Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
- 112 School of Physics, University of Melbourne, Victoria, Australia.
- 113 Dipartimento di Fisica, Università di Genova, Genova, Italy.
- 114 INFN Sezione di Genova, Genova, Italy.
- 115 Nikhef National Institute for Subatomic Physics and University of Amsterdam, Amsterdam, Netherlands.
- 116 Max-Planck-Institut für Physik (Werner-Heisenberg-Institut), München, Germany.
- 117 Palacký University, Joint Laboratory of Optics, Olomouc, Czech Republic.
- 118 Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei, China.
- 119 Department of Physics, Oxford University, Oxford, United Kingdom.
- 120 Department of Physics and Astronomy, University College London, London, United Kingdom.
- 121 Departamento de Física Teorica C-15 and CIAFF, Universidad Autónoma de Madrid, Madrid, Spain.
- 122 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China.
- 123 TRIUMF, Vancouver, British Columbia, Canada.
- 124 Department of Physics, University of British Columbia, Vancouver, British Columbia, Canada.
- 125 Department Physik, Universität Siegen, Siegen, Germany.
- 126 Universität Innsbruck, Department of Astro and Particle Physics, Innsbruck, Austria.
- 127 Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Física, y CONICET, Instituto de Física de Buenos Aires (IFIBA), Buenos Aires, Argentina.
- 128 LPNHE, Sorbonne Université, Université Paris Cité, CNRS/IN2P3, Paris, France.
- 129 Department of Physics and Astronomy, Tufts University, Medford, Massachusetts, USA.
- 130 Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics, University of Bern, Bern, Switzerland.
- 131 Istinye University, Sariyer, Istanbul, Türkiye.
- 132 Rio de Janeiro State University, Rio de Janeiro, Brazil.
- 133 Laboratory for Particle Physics and Cosmology, Harvard University, Cambridge, Massachusetts, USA.
- 134 Department of Physics and Astronomy, University of Uppsala, Uppsala, Sweden.
- 135 Physics Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA.
- 136 APC, Université Paris Cité, CNRS/IN2P3, Paris, France.
- 137 Charles University, Faculty of Mathematics and Physics, Prague, Czech Republic.
- 138 Fakultät für Physik und Astronomie, Julius-Maximilians-Universität Würzburg, Würzburg, Germany.
- 139 INFN Sezione di Roma Tre, Roma, Italy.
- 140 Fakultät für Mathematik und Naturwissenschaften, Fachgruppe Physik, Bergische Universität Wuppertal, Wuppertal, Germany.
- 141 Department of Physics Engineering, Gaziantep University, Gaziantep, Türkiye.
- 142 Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot, Israel.
- 143 Dipartimento di Fisica, Università della Calabria, Rende, Italy.
- 144 INFN Gruppo Collegato di Cosenza, Laboratori Nazionali di Frascati, Cosenza, Italy.
- 145 Department of Physics, Stockholm University, Stockholm, Sweden.
- 146 The Ohio State University, Columbus, Ohio, USA.
- 147 Department of Physics, University of Massachusetts, Amherst, Massachusetts, USA.
- 148 INFN-TIFPA, Trento, Italy.
- 149 Università degli Studi di Trento, Trento, Italy.
- 150 Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan, USA.
- 151 Department of Physics, Indiana University, Bloomington, Indiana, USA.
- 152 Department of Physics and Astronomy, York University, Toronto, Ontario, Canada.
- 153 Oskar Klein Centre, Stockholm, Sweden.
- 154 Department of Physics, University of Illinois, Urbana, Illinois, USA.
- 155 Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada.
- 156 Department of Physics, Boston University, Boston, Massachusetts, USA.
- 157 II. Physikalisches Institut, Justus-Liebig-Universität Giessen, Giessen, Germany.
- 158 University of Chinese Academy of Science (UCAS), Beijing, China.
- 159 Department of Physics, Nanjing University, Nanjing, China.
- 160 Department of Physics, Ankara University, Ankara, Türkiye.
- 161 Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark.
- 162 Institute for Mathematics, Astrophysics and Particle Physics, Radboud University/Nikhef, Nijmegen, Netherlands.
- 163 Departamento de Física, Escola de Ciências, Universidade do Minho, Braga, Portugal.
- 164 Departamento de Física, Universidad Nacional de Colombia, Bogotá, Colombia.
- 165 Departamento de Engenharia Elétrica, Universidade Federal de Juiz de Fora (UFJF), Juiz de Fora, Brazil.
- 166 High Energy Physics Institute, Tbilisi State University, Tbilisi, Georgia.
- 167 High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois, USA.
- 168 School of Physics and Astronomy, Shanghai Jiao Tong University, Key Laboratory for Particle Astrophysics and Cosmology (MOE), SKLPPC, Shanghai, China.
- 169 Faculty of Science, Kyoto University, Kyoto, Japan.
- 170 Physics Department, Tsinghua University, Beijing, China.
- 171 Department of Physics, University of Wisconsin, Madison, Wisconsin, USA.
- 172 Department of Physics, Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.
- 173 Department of Physics, University of Arizona, Tucson, Arizona, USA.
- 174 Department of Physics, National Tsing Hua University, Hsinchu, Taiwan.
- 175 INFN Sezione di Lecce, Lecce, Italy.
- 176 Institute of Physics of the Czech Academy of Sciences, Prague, Czech Republic.
- 177 Department of Experimental Particle Physics, Jožef Stefan Institute and Department of Physics, University of Ljubljana, Ljubljana, Slovenia.
- 178 Dipartimento Politecnico di Ingegneria e Architettura, Università di Udine, Udine, Italy.
- 179 Departamento de Física, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal.
- 180 Institute of Physics, Academia Sinica, Taipei, Taiwan.
- 181 Dipartimento di Matematica e Fisica, Università del Salento, Lecce, Italy.
- 182 Dipartimento di Matematica e Fisica, Università Roma Tre, Roma, Italy.
- 183 Departamento de Física, Pontificia Universidad Católica de Chile, Santiago, Chile.
- 184 Millennium Institute for Subatomic physics at high energy frontier (SAPHIR), Santiago, Chile.
- 185 Department of Physics, Royal Institute of Technology, Stockholm, Sweden.
- 186 Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany.
- 187 Faculty of Physics, University of Bucharest, Bucharest, Romania.
- 188 Federal University of Bahia, Bahia, Brazil.
- 189 Faculté des Sciences, Université Ibn-Tofail, Kénitra, Morocco.
- 190 Departamento de Física, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal.
- 191 Department of Physics, University of Hong Kong, Hong Kong, China.
- 192 Louisiana Tech University, Ruston, Louisiana, USA.
- 193 Institute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Qingdao, China.
- 194 Centro Nacional de Microelectrónica (IMB-CNM-CSIC), Barcelona, Spain.
- 195 INFN Sezione di Pavia, Pavia, Italy.
- 196 Department of Physics, University of Adelaide, Adelaide, Australia.
- 197 Departamento de Física, Universidade de Coimbra, Coimbra, Portugal.
- 198 National Institute of Physics, University of the Philippines Diliman (Philippines), Quezon City, Philippines.
- 199 Dipartimento di Fisica E. Fermi, Università di Pisa, Pisa, Italy.
- 200 University of Sharjah, Sharjah, United Arab Emirates.
- 201 Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico, USA.
- 202 National Centre for Scientific Research "Demokritos", Agia Paraskevi, Greece.
- 203 Marian Smoluchowski Institute of Physics, Jagiellonian University, Krakow, Poland.
- 204 Department of Physics, University of Alberta, Edmonton, Alberta, Canada.
- 205 University of Georgia, Tbilisi, Georgia.
- 206 West University in Timisoara, Timisoara, Romania.
- 207 Yerevan Physics Institute, Yerevan, Armenia.
- 208 Department of Physics, Shinshu University, Nagano, Japan.
- 209 Graduate School of Science, Osaka University, Osaka, Japan.
- 210 Division of Physics and Tomonaga Center for the History of the Universe, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Japan.
- 211 National University of Science and Technology Politechnica, Bucharest, Romania.
- 212 Institute of Physics, Azerbaijan Academy of Sciences, Baku, Azerbaijan.
- 213 Instituto de Física, Universidade de São Paulo, São Paulo, Brazil.
- 214 Instituto de Investigación Multidisciplinario en Ciencia y Tecnología, y Departamento de Física, Universidad de La Serena, Coquimbo, Chile.
- 215 Dipartimento di Fisica, Università di Pavia, Pavia, Italy.
- 216 Physics Department, University of Texas at Dallas, Richardson, Texas, USA.
- 217 E. Andronikashvili Institute of Physics, Iv. Javakhishvili Tbilisi State University, Tbilisi, Georgia.
- 218 Department of Physics, Institute of Science, Tokyo, Japan.
- 219 Instituto de Alta Investigación, Universidad de Tarapacá, Arica, Chile.
- 220 Department of Physics, Technion, Israel Institute of Technology, Haifa, Israel.
- 221 School of Physics, University of the Witwatersrand, Johannesburg, South Africa.
- 222 Department of Physics and Astronomy, Iowa State University, Ames, Iowa, USA.
- 223 Universidad Andres Bello, Department of Physics, Santiago, Chile.
- 224 Graduate School of Science, Kobe University, Kobe, Japan.
- 225 Affiliated with an institute formerly covered by a cooperation agreement with CERN.
- 226 Tsung-Dao Lee Institute, Shanghai, China.
- 227 Department of Physics and Institute for Advanced Study, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
- 228 School of Science, Shenzhen Campus of Sun Yat-sen University, China.
- 229 Centro de Física Nuclear da Universidade de Lisboa, Lisboa, Portugal.
- 230 University of Iowa, Iowa City, Iowa, USA.
- 231 L2IT, Université de Toulouse, CNRS/IN2P3, UPS, Toulouse, France.
- 232 Research Center for Advanced Particle Physics and Department of Physics, Kyushu University, Fukuoka, Japan.
- 233 LPMR, Faculté des Sciences, Université Mohamed Premier, Oujda, Morocco.
- 234 Facultad de Ciencias y Centro de Investigaciónes, Universidad Antonio Nariño, Bogotá, Colombia.
- 235 School of Physics, University of Sydney, Sydney, Australia.
- 236 Transilvania University of Brasov, Brasov, Romania.
- 237 National Institute for Research and Development of Isotopic and Molecular Technologies, Physics Department, Cluj-Napoca, Romania.
- 238 University of West Attica, Athens, Greece.
- 239 Division of Physics, TOBB University of Economics and Technology, Ankara, Türkiye.
- 240 University of California, Berkeley, California, USA.
- PMID: 40279599
- DOI: 10.1103/PhysRevLett.134.142301
Abstract
Top-quark pair production is observed in lead-lead (Pb+Pb) collisions at sqrt[s_{NN}]=5.02 TeV at the Large Hadron Collider with the ATLAS detector. The data sample was recorded in 2015 and 2018, amounting to an integrated luminosity of 1.9 nb^{-1}. Events with exactly one electron and one muon and at least two jets are selected. Top-quark pair production is measured with an observed (expected) significance of 5.0 (4.1) standard deviations. The measured top-quark pair production cross section is σ_{tt[over ¯]}=3.6 _{-0.9}^{+1.0}(stat) _{-0.5}^{+0.8}(syst) μb, with a total relative uncertainty of 31%, and is consistent with theoretical predictions using a range of different nuclear parton distribution functions. The observation of this process consolidates the evidence of the existence of all quark flavors in the preequilibrium stage of the quark-gluon plasma at very high energy densities, similar to the conditions present in the early Universe.