The multiple-charm hierarchy in the statistical hadronization model

被引：47

作者：

Andronic, Anton ^{[1
]}

Braun-Munzinger, Peter ^{[2
,3
,4
,5
,6
]}

Koehler, Markus K. ^{[4
]}

Mazeliauskas, Aleksas ^{[7
]}

Redlich, Krzysztof ^{[8
]}

Stachel, Johanna ^{[2
,3
,4
]}

Vislavicius, Vytautas ^{[9
]}

机构：

[1] Westfalische Wilhelms Univ Munster, Inst Kernphys, Wilhelm Klemm Str 9, D-48149 Munster, Germany

[2] GSI Helmholtzzentrum Schwerionenforsch GmbH, Res Div, Planckstr 1, Darmstadt, Germany

[3] GSI Helmholtzzentrum Schwerionenforsch GmbH, ExtreMe Matter Inst EMMI, Planckstr 1, Darmstadt, Germany

[4] Heidelberg Univ, Physi Inst, Neuenheimer Feld 226, Heidelberg, Germany

[5] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China

[6] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China

[7] CERN, Theoret Phys Dept, Espl Particules 1, CH-1211 Geneva 23, Switzerland

[8] Univ Wroclaw, Inst Theoret Phys, Plac Maxa Borna 9, PL-50204 Wroclaw, Poland

[9] Univ Copenhagen, Niels Bohr Inst, Blegdamsvej 17, Copenhagen, Denmark

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2021年 / 2021卷 / 07期

关键词：

Heavy Ion Phenomenology; COLLISIONS; QCD; LHC;

D O I：

10.1007/JHEP07(2021)035

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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.

引用

页数：30

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