Exclusive dimuon production in ultraperipheral <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>Pb</mml:mi><mml:mo>+</mml:mo><mml:mi>Pb</mml:mi></mml:mrow></mml:math> collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msqrt><mml:msub><mml:mi>s</mml:mi><mml:mrow><mml:mi>N</mml:mi><mml:mi>N</mml:mi></mml:mrow></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>5.02</mml:mn><mml:mspace width="0.16em"/><mml:mi>TeV</mml:mi></mml:mrow></mml:math> with ATLAS
G. AadCPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, FranceB. AbbottHomer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma, USAD. C. AbbottDepartment of Physics, University of Massachusetts, Amherst, Massachusetts, USAA. Abed AbudCERN, Geneva, SwitzerlandKira AbelingII. Physikalisches Institut, Georg-August-Universität Göttingen, Göttingen, GermanyD. K. AbhayasingheDepartment of Physics, Royal Holloway University of London, Egham, United KingdomHaider AbidiDepartment of Physics, University of Toronto, Toronto, Ontario, CanadaO. S. AbouZeidNiels Bohr Institute, University of Copenhagen, Copenhagen, DenmarkN.L. AbrahamDepartment of Physics and Astronomy, University of Sussex, Brighton, United KingdomH. AbramowiczRaymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv, IsraelH. AbreuDepartment of Physics, Technion, Israel Institute of Technology, Haifa, IsraelY. AbulaitiHigh Energy Physics Division, Argonne National Laboratory, Argonne, Illinois, USAB. S. AcharyaICTP, Trieste, ItalyB. AchkarII. Physikalisches Institut, Georg-August-Universität Göttingen, Göttingen, GermanyL. AdámekInstitut für Physik, Universität Mainz, Mainz, GermanyC. Adam BourdariosLAPP, Université Savoie Mont Blanc, CNRS/IN2P3, Annecy, FranceL. AdamczykFaculty of Physics and Applied Computer Science, AGH University of Science and Technology, Krakow, PolandJahred AdelmanDepartment of Physics, Northern Illinois University, Dekalb, Illinois, USAM. AdersbergerFakultät für Physik, Ludwig-Maximilians-Universität München, München, GermanyAytul AdiguzelDepartment of Physics, Bogazici University, Istanbul, TurkeyS. AdorniDépartement de Physique Nucléaire et Corpusculaire, Université de Genève, Genève, SwitzerlandTim AdyeParticle Physics Department, Rutherford Appleton Laboratory, Didcot, United KingdomTony AffolderSanta Cruz Institute for Particle Physics, University of California Santa Cruz, Santa Cruz, California, USAY. AfikDepartment of Physics, Technion, Israel Institute of Technology, Haifa, IsraelC. AgapopoulouIJCLab, Université Paris-Saclay, CNRS/IN2P3, 91405 Orsay, FranceMerve Nazlim AgarasLPC, Université Clermont Auvergne, CNRS/IN2P3, Clermont-Ferrand, FranceA. AggarwalInstitute for Mathematics, Astrophysics and Particle Physics, Radboud University/Nikhef, Nijmegen, NetherlandsC. AgheorghieseiDepartment of Physics, Alexandru Ioan Cuza University of Iasi, Iasi, RomaniaJ. A. Aguilar–SaavedraLaboratório de Instrumentação e Física Experimental de Partículas - LIP, Lisboa, PortugalA. AhmadCERN, Geneva, SwitzerlandF. AhmadovJoint Institute for Nuclear Research, Dubna, RussiaW. S. AhmedDepartment of Physics, McGill University, Montreal, Quebec, CanadaX. AiPhysics Division, Lawrence Berkeley National Laboratory and University of California, Berkeley, California, USAGiulio AielliINFN Sezione di Roma Tor Vergata, Roma, ItalyS. AkatsukaFaculty of Science, Kyoto University, Kyoto, JapanMelike AkbiyikInstitut für Physik, Universität Mainz, Mainz, GermanyTorsten AkessonFysiska institutionen, Lunds Universitet, Lund, SwedenE. AkilliDépartement de Physique Nucléaire et Corpusculaire, Université de Genève, Genève, SwitzerlandA. V. AkimovP.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, RussiaK. Al KhouryIJCLab, Université Paris-Saclay, CNRS/IN2P3, 91405 Orsay, FranceGian Luigi AlberghiINFN Bologna and Università di Bologna, Dipartimento di Fisica, Bologna, ItalyJ. AlbertDepartment of Physics and Astronomy, University of Victoria, Victoria, British Columbia, CanadaM. J. Alconada VerziniRaymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv, IsraelSara AlderweireldtCERN, Geneva, SwitzerlandM. AleksaCERN, Geneva, SwitzerlandI. N. AleksandrovJoint Institute for Nuclear Research, Dubna, RussiaC. AlexaHoria Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, RomaniaT. AlexopoulosPhysics Department, National Technical University of Athens, Zografou, GreeceA. AlfonsiNikhef National Institute for Subatomic Physics and University of Amsterdam, Amsterdam, NetherlandsF. AlfonsiINFN Bologna and Università di Bologna, Dipartimento di Fisica, Bologna, ItalyMuhammad AlhroobHomer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma, USABabar AliCzech Technical University in Prague, Prague, Czech RepublicS. AliInstitute of Physics, Academia Sinica, Taipei, TaiwanM. AlievTomsk State University, Tomsk, RussiaGianluca AlimontiINFN Sezione di Milano, Milano, ItalyCorentin AllaireCERN, Geneva, SwitzerlandB. M. M. AllbrookeDepartment of Physics and Astronomy, University of Sussex, Brighton, United KingdomB. W. AllenInstitute for Fundamental Science, University of Oregon, Eugene, Oregon, USAPhilip Patrick AllportSchool of Physics and Astronomy, University of Birmingham, Birmingham, United KingdomA. AloisioINFN Sezione di Napoli, Napoli, ItalyF. AlonsoInstituto de Física La Plata, Universidad Nacional de La Plata and CONICET, La Plata, ArgentinaCristiano AlpigianiDepartment of Physics, University of Washington, Seattle, Washington, USAE. Alunno CameliaINFN Sezione di Roma Tor Vergata, Roma, ItalyM. Alvarez EstevezDepartamento de Física Teorica C-15 and CIAFF, Universidad Autónoma de Madrid, Madrid, SpainM. G. AlviggiDipartimento di Fisica, Università di Napoli, Napoli, ItalyY. Amaral CoutinhoUniversidade Federal do Rio De Janeiro COPPE/EE/IF, Rio de Janeiro, BrazilAlessandro AmblerDepartment of Physics, McGill University, Montreal, Quebec, CanadaL. AmbrozDepartment of Physics, Oxford University, Oxford, United KingdomC. AmelungDepartment of Physics, Brandeis University, Waltham, Massachusetts, USADante AmideiDepartment of Physics, University of Michigan, Ann Arbor, Michigan, USAS. P. Amor Dos SantosLaboratório de Instrumentação e Física Experimental de Partículas - LIP, Lisboa, PortugalS. AmorosoDeutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, GermanyC. S. AmroucheDépartement de Physique Nucléaire et Corpusculaire, Université de Genève, Genève, SwitzerlandF. F. AnDepartment of Physics and Astronomy, Iowa State University, Ames, Iowa, USAChristos AnastopoulosDepartment of Physics and Astronomy, University of Sheffield, Sheffield, United KingdomQ. AnIRFU, CEA, Université Paris-Saclay, Gif-sur-Yvette, FranceT. AndeenDepartment of Physics, University of Texas at Austin, Austin, Texas, USAJohn Kenneth AndersAlbert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics, University of Bern, Bern, SwitzerlandS. Y. AndreanDepartment of Physics, Stockholm University, SwedenA. AndreazzaINFN Sezione di Milano, Milano, ItalyV. AndreiKirchhoff-Institut für Physik, Ruprecht-Karls-Universität Heidelberg, Heidelberg, GermanyC. R. AnelliDepartment of Physics and Astronomy, University of Victoria, Victoria, British Columbia, CanadaS. AngelidakisPhysics Department, National and Kapodistrian University of Athens, Athens, GreeceAaron AngeramiNevis Laboratory, Columbia University, Irvington, New York, USAAlexey AnisenkovNovosibirsk State University Novosibirsk, RussiaA. AnnoviINFN Sezione di Pisa, Pisa, ItalyC. AntelDépartement de Physique Nucléaire et Corpusculaire, Université de Genève, Genève, SwitzerlandM. T. AnthonyDepartment of Physics and Astronomy, University of Sheffield, Sheffield, United KingdomEgor AntipovDepartment of Physics, Oklahoma State University, Stillwater, Oklahoma, USAMario AntonelliINFN e Laboratori Nazionali di Frascati, Frascati, ItalyD. J. A. AntrimDepartment of Physics and Astronomy, University of California Irvine, Irvine, California, USAF. AnulliINFN Sezione di Roma, Roma, ItalyMasato AokiKEK, High Energy Accelerator Research Organization, Tsukuba, JapanJ. A. Aparisi PozoInstituto de Física Corpuscular (IFIC), Centro Mixto Universidad de Valencia - CSIC, Valencia, SpainM. A. AparoDepartment of Physics and Astronomy, University of Sussex, Brighton, United KingdomL. Aperio BellaDeutsches Elektronen-Synchrotron DESY, Hamburg and Zeuthen, GermanyN. AranzabalCERN, Geneva, SwitzerlandV. Araujo FerrazDepartamento de Engenharia Elétrica, Universidade Federal de Juiz de Fora (UFJF), Juiz de Fora, BrazilR. Araujo PereiraUniversidade Federal do Rio De Janeiro COPPE/EE/IF, Rio de Janeiro, Brazil
2021lv
ABI
Abstract
Exclusive dimuon production in ultraperipheral collisions (UPC), resulting from photon-photon interactions in the strong electromagnetic fields of colliding high-energy lead nuclei, PbPb( ) + -(Pb ( ) Pb ( ) ), is studied using L int = 0.48 nb -1 of s NN = 5.02 TeV lead-lead collision data at the LHC with the ATLAS detector. Dimuon pairs are measured in the fiducial region p T, > 4 GeV, | | < 2.4, invariant mass m > 10 GeV, and p T, < 2 GeV. The primary background from single-dissociative processes is extracted from the data using a template fitting technique. Differential cross sections are presented as a function of m , absolute pair rapidity (|y |), scattering angle in the dimuon rest frame (| cos | ), and the colliding photon energies.
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