Incident energy dependence of p(t) correlations at relativistic energies

0307395 - ÚJF 2008 RIV US eng J - Journal Article
Adams, J. - Aggarwal, M. M. - Ahammed, Z. - Amonett, J. - Anderson, B. D. - Arkhipkin, D. - Chaloupka, Petr - Averichev, G. S. - Badyal, S. K. - Bai, Y. - Balewski, J. - Bielčík, J. - Bielčíková, J.
Incident energy dependence of p(t) correlations at relativistic energies.
[Závislost p(t) korelací při relativistických energiích na incidentní energii.]
Physical Review. C. Roč. 72, č. 4 (2005), 044902-044902. ISSN 0556-2813
R&D Projects: GA ČR GA202/04/0793
Institutional research plan: CEZ:AV0Z10480505
Keywords : By -event fluctuations
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 3.610, year: 2005

We present results for two-particle transverse momentum correlations, <Delta p(t,i)Delta p(t,j)>, as a function of event centrality for Au+Au collisions at root SNN = 20, 62, 130, and 200 GeV at the BNL Relativistic Heavy Ion Collider. We observe correlations decreasing with centrality that are similar at all four incident energies. The correlations multiplied by the multiplicity density increase with incident energy, and the centrality dependence may show evidence of processes such as thermalization, jet production, or the saturation of transverse flow. The square root of the correlations divided by the event-wise average transverse momentum per event shows little or no beam energy dependence and generally agrees with previous measurements made at the CERN Super Proton Synchrotron.

Presentovány výsledky o dvoučásticových korelací příčné hybnosti. Delta p(t,i)Delta p(t,j)jako funkce centrality srážek, Au+Au při sgvr(SNN)=20,62,130,200 GeV na BNL RHIC.
Permanent Link: http://hdl.handle.net/11104/0160176