Rapidity, azimuthal, and multiplicity dependence of mean transverse momentum and transverse momentum correlations in {pi}{sup +}p and K{sup +}p collisions in {radical}(s)=22 GeV

Journal Article · Fri Mar 31 23:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.73.072004· OSTI ID:20782783

Atayan, M R; Gulkanyan, H ^[1]; Yuting, Bai ^[2]; De Wolf, E A ^[3]; Endler, A M.F. ^[4]; Jinghua, Fu; Yanping, Huang; Lianshou, Liu; Yuanfang, Wu ^[2]; Hakobyan, R ^[1]; Kittel, W ^[5]; Zhiming, Li ^[2]; Metreveli, Z V; Tomaradze, A G ^[6]; Smirnova, L N; Tikhonova, L A ^[7]; Zotkin, S A ^[7]; DESY, Hamburg ^[8]

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1. Institute of Physics, AM-375036 Yerevan (Armenia)
2. Institute of Particle Physics, Hua-Zhong Normal University, Wuhan 430079 (China)
3. Department of Physics, University of Antwerp, B-2610 Wilrijk (Belgium)
4. Centro Brasileiro de Pesquisas Fisicas, BR-22290 Rio de Janeiro (Brazil)
5. Radboud University/NIKHEF, NL-6525 ED Nijmegen (Netherlands)
6. Institute for High Energy Physics of Tbilisi State University, GE-380086 Tbilisi (Georgia) and Northwestern University, Evanston, Illinois (United States)
7. Scobeltsyn Institute of Nuclear Physics, Lomonosow Moscow State University, RU-119899 Moscow (Russian Federation)
8. Germany

Rapidity, azimuthal and multiplicity dependence of mean transverse momentum and transverse momentum correlations of charged particles is studied in {pi}{sup +}p and K{sup +}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.

• OSTI ID: 20782783
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 73; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
CORRELATIONS
GEV RANGE
KAON PLUS REACTIONS
KAON-PROTON INTERACTIONS
MONTE CARLO METHOD
MULTIPLICITY
P CODES
PARTICLE RAPIDITY
PION PLUS REACTIONS
PION-PROTON INTERACTIONS
PIONS PLUS
TRANSVERSE MOMENTUM