Distributions of charged hadrons associated with high transverse momentum particles in pp and Au plus Au collisions at root(S)(NN)=200 GeV

0307432 - ÚJF 2008 RIV US eng J - Journal Article
Adams, J. - Adler, C. - Aggarwall, M. M. - Ahammed, Z. - Amonett, J. - Anderson, B.D. - Arkhipkin, D. - Averichev, G. S. - Badyal, S. K. - Balewski, J. - Chaloupka, Petr - Baenby, L. S.
Distributions of charged hadrons associated with high transverse momentum particles in pp and Au plus Au collisions at root(S)(NN)=200 GeV.
[Distribuce nabitých hadronů sdružených s částicemi s velkou příčnou hybností ve srážkách pp a Au plus při (S)(NN)=200GeV.]
Physical Review Letters. Roč. 95, č. 15 (2005), s. 152301-152301. ISSN 0031-9007. E-ISSN 1079-7114
R&D Projects: GA ČR GA202/04/0793
Institutional research plan: CEZ:AV0Z10480505
Keywords : ENERGY-LOSS * QCD
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 7.489, year: 2005

Charged hadrons in 0.15 < p(perpendicular to)< 4 GeV/c associated with particles of p(perpendicular to)(trig)> 4 GeV/c are reconstructed in pp and Au+Au collisions at root s(NN)=200 GeV. The associated multiplicity and p(perpendicular to) magnitude sum are found to increase from pp to central Au+Au collisions. The associated p(perpendicular to) distributions, while similar in shape on the nearside, are significantly softened on the awayside in central Au+Au relative to pp and not much harder than that of inclusive hadrons. The results, consistent with jet quenching, suggest that the awayside fragments approach equilibration with the medium traversed.

Nabité hadrony s 0,15<p(příčné)<4GeV/c spojené s částicemi s p(příčné)<4GeV/c byly vkonstruovány ve srážkách pp a Au+Au při sgvt s(NN)=200 GeV. Multiplicita roste od pp k centrálním Au+Au srážkám.
Permanent Link: http://hdl.handle.net/11104/0160202