Large proton cumulants from the superposition of ordinary multiplicity distributions

被引：30
作者：
Bzdak, Adam [1 ]
Koch, Volker [2 ]
Oliinychenko, Dmytro [2 ]
Steinheimer, Jan [3 ]
机构：
[1] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, PL-30059 Krakow, Poland
[2] Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA
[3] Frankfurt Inst Adv Studies, Ruth Moufang Str 1, D-60438 Frankfurt, Germany
来源：
PHYSICAL REVIEW C | 2018年 / 98卷 / 05期
关键词：
DECONFINEMENT PHASE-TRANSITION; HEAVY-ION COLLISIONS; NET-PROTON; HIGHER MOMENTS; FLUCTUATIONS; CHARGE; ORDER;
D O I：
10.1103/PhysRevC.98.054901
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：
We construct a multiplicity distribution characterized by large factorial cumulants (integrated correlation functions) from a simple combination of two ordinary multiplicity distributions characterized by small factorial cumulants. We find that such a model, which could be interpreted as representing two event classes, reproduces the preliminary data for the proton cumulants measured by the STAR collaboration at 7.7 GeV very well. This model then predicts very large values for the fifth and sixth order factorial cumulants, which can be tested in experiment.
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页数：10
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