Multiplicity dependence of (multi-)strange hadron production in proton-proton collisions at $$\sqrt{s}$$ = 13 TeV
S. AcharyaVariable Energy Cyclotron Centre, Homi Bhabha National Institute, Kolkata, IndiaD. AdamováNuclear Physics Institute of the Czech Academy of Sciences, Řež u Prahy, Czech RepublicS. P. AdhyaVariable Energy Cyclotron Centre, Homi Bhabha National Institute, Kolkata, IndiaA. AdlerJohann-Wolfgang-Goethe Universität Frankfurt Institut für Informatik, Fachbereich Informatik und Mathematik, Frankfurt, GermanyJ. AdolfssonLund University Department of Physics, Division of Particle Physics, Lund, SwedenM. M. AggarwalPhysics Department, Panjab University, Chandigarh, IndiaG. Aglieri RinellaEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandM. AgnelloDipartimento DISAT del Politecnico and Sezione INFN, Turin, ItalyN. AgrawalCentro Fermi-Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi', Rome, ItalyZ. AhammedVariable Energy Cyclotron Centre, Homi Bhabha National Institute, Kolkata, IndiaS. AhmadDepartment of Physics, Aligarh Muslim University, Aligarh, IndiaS. U. AhnKorea Institute of Science and Technology Information, Daejeon, Republic of KoreaA. AkindinovNRC Kurchatov Institute-ITEP, Moscow, RussiaM. Al-TuranyResearch Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, GermanyS. N. AlamVariable Energy Cyclotron Centre, Homi Bhabha National Institute, Kolkata, IndiaD. S. D. AlbuquerqueUniversidade Estadual de Campinas (UNICAMP), Campinas, BrazilD. AleksandrovNational Research Centre Kurchatov Institute, Moscow, RussiaB. AlessandroINFN, Sezione di Torino, Turin, ItalyH. M. AlfandaCentral China Normal University, Wuhan, ChinaR. Alfaro MolinaInstituto de Física, Universidad Nacional Autónoma de México, Mexico City, MexicoB. AliCentral China Normal University, Wuhan, ChinaY. AliCOMSATS University Islamabad, Islamabad, PakistanA. AliciCentro Fermi-Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi', Rome, ItalyA. AlkinBogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, Kiev, UkraineJ. AlmeDepartment of Physics and Technology, University of Bergen, Bergen, NorwayT. AltDepartment of Physics and Technology, University of Bergen, Bergen, NorwayL. AltenkamperDepartment of Physics and Technology, University of Bergen, Bergen, NorwayI. AltsybeevSt. Petersburg State University, St. Petersburg, RussiaM. N. AnaamCentral China Normal University, Wuhan, ChinaC. AndreiHoria Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, RomaniaD. AndreouEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandH. A. AndrewsSchool of Physics and Astronomy, University of Birmingham, Birmingham, UKA. AndronicWestfälische Wilhelms-Universität Münster, Institut für Kernphysik, Münster, GermanyM. AngelettiEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandV. AnguelovPhysikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, GermanyC. AnsonCreighton University, Omaha, NE, USAT. AntičićRudjer Bošković Institute, Zagreb, CroatiaF. AntinoriINFN, Sezione di Padova, Padua, ItalyP. AntonioliINFN, Sezione di Bologna, Bologna, ItalyR. AnwarUniversity of Houston, Houston, TX, USAN. ApadulaLawrence Berkeley National Laboratory, Berkeley, CA, USAL. AphecetcheSUBATECH, IMT Atlantique, Université de Nantes, CNRS-IN2P3, Nantes, FranceH. AppelshäuserInstitut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyS. ArcelliDipartimento di Fisica e Astronomia dell'Università and Sezione INFN, Bologna, ItalyR. ArnaldiINFN, Sezione di Torino, Turin, ItalyM. ArratiaLawrence Berkeley National Laboratory, Berkeley, CA, USAI. C. ArseneDepartment of Physics, University of Oslo, Oslo, NorwayM. ArslandokPhysikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, GermanyA. AugustinusEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandR. AverbeckResearch Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, GermanySizar AzizInstitut de Physique Nucléaire d'Orsay (IPNO), Institut National de Physique Nucléaire et de Physique des Particules (IN2P3/CNRS), Université de Paris-Sud, Université Paris-Saclay, Orsay, FranceM. D. AzmiDepartment of Physics, Aligarh Muslim University, Aligarh, IndiaA. BadaláINFN, Sezione di Catania, Catania, ItalyY. W. BaekGangneung-Wonju National University, Gangneung, Republic of KoreaS. BagnascoINFN, Sezione di Torino, Turin, ItalyX. BaiResearch Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, GermanyR. BailhacheInstitut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyR. BalaPhysics Department, University of Jammu, Jammu, IndiaA. BaldisseriUniversité Paris-Saclay Centre d'Etudes de Saclay (CEA), IRFU, Départment de Physique Nucléaire (DPhN), Saclay, FranceM. BallHelmholtz-Institut für Strahlen- und Kernphysik, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, GermanyS. BalouzaPhysik Department, Technische Universität München, Munich, GermanyR. C. BaralNational Institute of Science Education and Research, Homi Bhabha National Institute, Jatni, IndiaR. BarberaDipartimento di Fisica e Astronomia dell'Università and Sezione INFN, Catania, ItalyL. BarioglioDipartimento di Fisica dell'Università and Sezione INFN, Turin, ItalyG. G. BarnaföldiWigner Research Centre for Physics, Hungarian Academy of Sciences, Budapest, HungaryL. S. BarnbyNuclear Physics Group, STFC Daresbury Laboratory, Daresbury, UKV. BarretUniversité Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, FranceP. BartaliniCentral China Normal University, Wuhan, ChinaK. BarthEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandE. BartschInstitut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyF. BaruffaldiDipartimento di Fisica e Astronomia dell'Università and Sezione INFN, Padua, ItalyN. BastidUniversité Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, FranceS. BasuWayne State University, Detroit, MI, USAG. BatigneSUBATECH, IMT Atlantique, Université de Nantes, CNRS-IN2P3, Nantes, FranceB. BatyunyaJoint Institute for Nuclear Research (JINR), Dubna, RussiaPaul Christoph BatzingDepartment of Physics, University of Oslo, Oslo, NorwayD. BauriIndian Institute of Technology Bombay (IIT), Mumbai, IndiaJ. L. Bazo AlbaSección Física, Departamento de Ciencias, Pontificia Universidad Católica del Perú, Lima, PeruI. G. BeardenNiels Bohr Institute, University of Copenhagen, Copenhagen, DenmarkC. BeddaInstitute for Subatomic Physics, Utrecht University/Nikhef, Utrecht, The NetherlandsN. K. BeheraInha University, Incheon, Republic of KoreaI. BelikovUniversité de Strasbourg, CNRS, IPHC UMR 7178, 67000, Strasbourg, FranceF. BelliniEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandR. BellwiedUniversity of Houston, Houston, TX, USAV. BelyaevNRNU Moscow Engineering Physics Institute, Moscow, RussiaG. BencediWigner Research Centre for Physics, Hungarian Academy of Sciences, Budapest, HungaryS. BeolèDipartimento di Fisica dell'Università and Sezione INFN, Turin, ItalyA. BercuciHoria Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, RomaniaY. BerdnikovPetersburg Nuclear Physics Institute, Gatchina, RussiaD. BerényiWigner Research Centre for Physics, Hungarian Academy of Sciences, Budapest, HungaryR. A. BertensUniversity of Tennessee, Knoxville, TN, USAD. BerzanoINFN, Sezione di Torino, Turin, ItalyM. G. BesoiuInstitute of Space Science (ISS), Bucharest, RomaniaL. BetevEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandA. BhasinPhysics Department, University of Jammu, Jammu, IndiaI. R. BhatPhysics Department, University of Jammu, Jammu, IndiaM. A. BhatDepartment of Physics, Bose Institute, Centre for Astroparticle Physics and Space Science (CAPSS), Kolkata, IndiaH. BhattDepartment of Physics, Gauhati University, Guwahati, IndiaB. BhattacharjeeDepartment of Physics, Gauhati University, Guwahati, IndiaA. BianchiDipartimento di Fisica dell'Università and Sezione INFN, Turin, Italy
2020en
ABI
Аннотация
Abstract The production rates and the transverse momentum distribution of strange hadrons at mid-rapidity ( $$\left| y\right| < 0.5$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mfenced><mml:mi>y</mml:mi></mml:mfenced><mml:mo><</mml:mo><mml:mn>0.5</mml:mn></mml:mrow></mml:math> ) are measured in proton-proton collisions at $$\sqrt{s}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt></mml:math> = 13 TeV as a function of the charged particle multiplicity, using the ALICE detector at the LHC. The production rates of $$\mathrm{K}^{0}_{S}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mi>S</mml:mi><mml:mn>0</mml:mn></mml:msubsup></mml:math> , $$\Lambda $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>Λ</mml:mi></mml:math> , $$\Xi $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>Ξ</mml:mi></mml:math> , and $$\Omega $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>Ω</mml:mi></mml:math> increase with the multiplicity faster than what is reported for inclusive charged particles. The increase is found to be more pronounced for hadrons with a larger strangeness content. Possible auto-correlations between the charged particles and the strange hadrons are evaluated by measuring the event-activity with charged particle multiplicity estimators covering different pseudorapidity regions. When comparing to lower energy results, the yields of strange hadrons are found to depend only on the mid-rapidity charged particle multiplicity. Several features of the data are reproduced qualitatively by general purpose QCD Monte Carlo models that take into account the effect of densely-packed QCD strings in high multiplicity collisions. However, none of the tested models reproduce the data quantitatively. This work corroborates and extends the ALICE findings on strangeness production in proton-proton collisions at 7 TeV.
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