Effect of color reconnection on multiplicity dependent charged particle production in PYTHIA-generated pp collisions at the LHC energies

被引：2
作者：
Sarma, Pranjal [1 ,2 ]
Barman, Banajit [1 ]
Bhattacharjee, Buddhadeb [1 ]
机构：
[1] Gauhati Univ, Dept Phys, Nucl & Radiat Phys Res Lab, Gauhati 781001, Assam, India
[2] Jagiroad Coll, Dept Phys, Jagiroad 782410, Assam, India
来源：
EUROPEAN PHYSICAL JOURNAL A | 2023年 / 59卷 / 04期
关键词：
PROTON-PROTON COLLISIONS; PB-PB COLLISIONS; TRANSVERSE-MOMENTUM DISTRIBUTIONS; QUARK-GLUON PLASMA; PHASE-TRANSITION; PSEUDORAPIDITY; PERSPECTIVE; ROOT-S=0.9; DERIVATION; SEARCH;
D O I：
10.1140/epja/s10050-023-00989-7
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：
The transverse momentum ( p(T)) spectra of inclusive charged particles and its dependence on charged-particle multiplicity are studied in pp collisions at vs = 7 and 13 TeVusing the Monte Carlo event generator PYTHIA 8.212 (Monash tune). The results of the minimum bias pp collisions are compared with the ALICE published results at the same energies. The variations of the effective temperature (T-Eff) and average transverse momentum ((p(T))) with charged-particle multiplicity are also studied. The p(T) spectra of the charged particles are observed to get harder with increasing charged-particle multiplicity. Moreover, a sharp increase in the T-Eff and (p(T) ) with increasing multiplicity followed by a gradual decrease with the further increase in multiplicity could also be observed. Further, it could be observed that the color reconnection (CR) mechanism has a consider-able effect on flattening the T-Eff and (p(T) ) with increasing multiplicity, which indicates that phase-transition may not necessarily be the only mechanism that could give rise to such an effect.
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