Influence of modified light-flavor hadron spectra on particle yields in the statistical hadronization model

被引：11

作者：

Andronic, A. ^{[1
]}

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

Guenduez, D. ^{[4
]}

Kirchhoff, Y. ^{[4
]}

Koehler, M. K. ^{[4
]}

Stachel, J. ^{[2
,3
,4
]}

Winn, M. ^{[7
]}

机构：

[1] Westfalische Wilhelms Univ Munster, Inst Kernphys, Munster, Germany

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

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

[4] Heidelberg Univ, Phys Inst, 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] IRFU, Dept Phys Nucl DPhN, Paris Saclay Ctr Etud Saclay CEA, Saclay, France

来源：

NUCLEAR PHYSICS A | 2021年 / 1010卷

关键词：

Relativistic nuclear collisions; Statistical hadronization model; Hadron yields PbPb collisions LHC; PB-PB COLLISIONS; NUCLEAR COLLISIONS; PHASE-DIAGRAM; MASSES; QCD;

D O I：

10.1016/j.nuclphysa.2021.122176

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Hadron production in relativistic nuclear collisions is well described in the framework of the Statistical Hadronization Model (SHM). We investigate the influence on SHM predictions of hadron mass spectra for light-flavor baryons and mesons modified by the addition of about 500 new states as predicted by lattice QCD and a relativistic quark model. The deterioration of the resulting thermodynamic fit quality obtained for Pb-Pb collision data at root sNN = 2.76 TeV suggests that the additional states are not suited to be naively used since also interactions among the states as well as non-resonant contributions need to be considered in the SHM approach. Incorporating these effects via the pion nucleon interaction determined from measured phase shifts leads again to excellent reproduction of the experimental data. This is a strong indication that at least the additional nucleon excited states cannot be understood and used as independent resonances. (C) 2021 The Authors. Published by Elsevier B.V.

引用

页数：14

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