pT spectra of charged hadrons in proton-proton collisions at ,√s=200 GeV

被引：11
|
作者：
Ajaz, M. [1 ]
Maryam [1 ]
机构：
[1] Abdul Wali Khan Univ, Dept Phys, Mardan 23200, Pakistan
来源：
MODERN PHYSICS LETTERS A | 2019年 / 34卷 / 19期
关键词：
Light flavored hadrons; transverse momentum distributions; same particles' ratio; different particles' ratio; AGS energies; models predictions; PHOTON INTERACTIONS; MODEL; SIMULATION;
D O I：
10.1142/S0217732319501487
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The transverse momentum spectra of pi(+/-) mesons, protons and antiprotons produced in proton-proton collisions at 200 GeV with hadron production models are reported. Two tunes of EPOS (EPOS1.99 and EPOS-LHC), three tunes of QGSJET (QGSJETI, QGSJETII-03, QGSJETII-04), DPMJET and HIJING models are used to obtain the spectra. The results are compared with the measurements of STAR collaboration ob- tained at mid-rapidity of vertical bar y vertical bar < 0.5 in p(T) range of 0.3 < p(T) < 10 GeV/c. All models reproduce the ratios pi(-)/pi(+) and (p) over bar /p at low p(T) but could not predict well at high p(T). In addition, EPOS tunes and QGSJET tunes predict well the spectra of pi(+/-) meson and the ratios p/pi(+) and (p) over bar/pi(+) at low p(T). The HIJING and the QGSJET (tune I only) could reproduce all the spectra and all the ratios at a satisfactory level of precision and were found good among the models considered in the current study at RHIC energy.
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页数：9
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