Rapidity, azimuthal, and multiplicity dependence of mean transverse momentum and transverse momentum correlations in π+p and K+p collisions in √s=22 GeV

被引：2

作者：

Atayan, MR ^{[1
]}

Yuting, B

De Wolf, EA

Endler, AMF

Jinghua, F

Gulkanyan, H

Hakobyan, R

Yanping, H

Kittel, W

Lianshou, L

Zhiming, L

Metreveli, ZV

Smirnova, LN

Tikhonova, LA

Tomaradze, AG

Yuanfang, W

Zotkin, SA

机构：

[1] Inst Phys, AM-375036 Yerevan, Armenia

[2] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China

[3] Univ Antwerp, Dept Phys, B-2610 Antwerp, Belgium

[4] Ctr Brasileiro Pesquisas Fis, BR-22290 Rio De Janeiro, Brazil

[5] Radboud Univ NIKEF, NL-6525 ED Nijmegen, Netherlands

[6] Tbilisi State Univ, Inst High Energy Phys, GE-380086 Tbilisi, Georgia

[7] Northwestern Univ, Evanston, IL USA

[8] Moscow MV Lomonosov State Univ, Scobeltsyn Inst Nucl Phys, RU-119899 Moscow, Russia

[9] DESY, D-2000 Hamburg, Germany

来源：

PHYSICAL REVIEW D | 2006年 / 73卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.73.072004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Rapidity, azimuthal and multiplicity dependence of mean transverse momentum and transverse momentum correlations of charged particles is studied in pi(+)p and K(+)p collisions at 250 GeV/c incident beam momentum. For the first time, it is found that the rapidity dependence of the two-particle transverse momentum correlation is different from that of the mean transverse momentum, but both have similar multiplicity dependence. In particular, the transverse momentum correlations are boost invariant. This is similar to the recently found boost invariance of the charge balance function. A strong azimuthal dependence of the transverse momentum correlations originates from the constraint of energy-momentum conservation. The results are compared with those from the PYTHIA Monte Carlo generator. The similarities to and differences with the results from current heavy ion experiments are discussed.

引用

页数：5

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