Effects of popcorn mechanisms in p plus p and Pb plus Pb collisions at CERN SPS energies within the HIJING code

被引：7

作者：

Abdel-Waged, Khaled ^{[1
]}

Felemban, Nuha ^{[1
]}

机构：

[1] Umm Al Qura Univ, Fac Appl Sci, Dept Phys, POB 10471, Mecca 21955, Saudi Arabia

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2020年 / 47卷 / 06期

关键词：

HIJING; PYTHIA; nuclear reactions; SPS energy; LUND MONTE-CARLO; BARYON PRODUCTION; INTERACTION-MODEL; FRAGMENTATION; QUARK;

D O I：

10.1088/1361-6471/ab8452

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 have investigated the influence of different baryon production mechanisms on the rapidity distributions (dn/dy) and transverse mass (m(T)) spectra of pi(+/-), k(+/-) and p(+/-) in p + p and Pb + Pb collisions at the CERN super proton synchrotron (SPS) energies by utilizing the heavy ion jet interaction generator (HIJING) code incorporated with a modern version of PYTHIA (version 6.4). Predictions are compared using the simple and advanced popcorn mechanisms, denoted as HIJING/SP and HIJING/AP, respectively, with different model parameters. It is found that HIJING/AP/set4 (that includes the suppression of first rank baryons) better describes the yields of pi(+/-), k(+/-) and p over bar p + p interactions at SPS energies. We have also validated the HIJING/AP/set5 (that includes set4 and string tension with value of k alpha a(b)=1.64k0<i, where k(0) = 1 GeV/fm is the default string tension) by reproducing the identified hadron rapidity distributions and m(T)-spectra in both peripheral (33%-43%) and central (0%-5(7)%) Pb + Pb collisions at different SPS energies.

引用

页数：19

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