The multiple-charm hierarchy in the statistical hadronization model

Andronic, Anton; Braun-Munzinger, Peter; Köhler, Markus K.; Mazeliauskas, Aleksas; Redlich, Krzysztof; Stachel, Johanna; Vislavicius, Vytautas

doi:10.1007/JHEP07(2021)035

Regular Article - Theoretical Physics
Open Access
Published: 08 July 2021

The multiple-charm hierarchy in the statistical hadronization model

Anton Andronic¹,
Peter Braun-Munzinger^2,3,4,
Markus K. Köhler³,
Aleksas Mazeliauskas⁵,
Krzysztof Redlich⁶,
Johanna Stachel^2,3 &
…
Vytautas Vislavicius⁷

Journal of High Energy Physics volume 2021, Article number: 35 (2021) Cite this article

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Abstract

In relativistic nuclear collisions the production of hadrons with light (u,d,s) quarks is quantitatively described in the framework of the Statistical Hadronization Model (SHM). Charm quarks are dominantly produced in initial hard collisions but interact strongly in the hot fireball and thermalize. Therefore charmed hadrons can be incorporated into the SHM by treating charm quarks as ‘impurities’ with thermal distributions, while the total charm content of the fireball is fixed by the measured open charm cross section. We call this model SHMc and demonstrate that with SHMc the measured multiplicities of single charm hadrons in lead-lead collisions at LHC energies can be well described with the same thermal parameters as for (u,d,s) hadrons. Furthermore, transverse momentum distributions are computed in a blast-wave model, which includes the resonance decay kinematics. SHMc is extended to lighter collision systems down to oxygen-oxygen and includes doubly- and triply-charmed hadrons. We show predictions for production probabilities of such states exhibiting a characteristic and quite spectacular enhancement hierarchy.

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Authors and Affiliations

Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Str. 9, 48149, Münster, Germany
Anton Andronic
Research Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstr. 1, Darmstadt, Germany
Peter Braun-Munzinger & Johanna Stachel
Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 223, Heidelberg, Germany
Peter Braun-Munzinger, Markus K. Köhler & Johanna Stachel
Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University, Wuhan, 430079, China
Peter Braun-Munzinger
Theoretical Physics Department, CERN, Espl. des Particules 1, CH-1211, Geneva 23, Switzerland
Aleksas Mazeliauskas
Institute of Theoretical Physics, University of Wrocław, plac Maxa Borna 9, 50-204, Wrocław, Poland
Krzysztof Redlich
Niels Bohr Institute, University of Copenhagen, Blegdamsvej, 17, Copenhagen, Denmark
Vytautas Vislavicius

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Anton Andronic
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Peter Braun-Munzinger
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Markus K. Köhler
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Aleksas Mazeliauskas
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Krzysztof Redlich
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Johanna Stachel
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Vytautas Vislavicius
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Andronic, A., Braun-Munzinger, P., Köhler, M.K. et al. The multiple-charm hierarchy in the statistical hadronization model. J. High Energ. Phys. 2021, 35 (2021). https://doi.org/10.1007/JHEP07(2021)035

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Received: 06 May 2021
Revised: 09 June 2021
Accepted: 10 June 2021
Published: 08 July 2021
DOI: https://doi.org/10.1007/JHEP07(2021)035

Keywords

Heavy Ion Phenomenology

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