Multiplicity distribution and spectra of negatively charged hadrons in Au+Au collisions at root s(NN)=130 GeV

0185569 - UJF-V 20020079 RIV US eng J - Článek v odborném periodiku
Adler, C. - Ahammed, Z. - Allgower, C. - Amonett, J. - Anderson, B. D. - Anderson, M. - Averichev, G. S. - Balewski, J. - Barannikova, O. - Barnby, L. S. - Baudot, J. - Bekele, S. - Šumbera, Michal - Zborovský, Imrich
Multiplicity distribution and spectra of negatively charged hadrons in Au+Au collisions at root s(NN)=130 GeV.
Physical Review Letters. Roč. 8711, č. 11 (2001), s. 2303. ISSN 0031-9007. E-ISSN 1079-7114
Grant CEP: GA MŠMT ME 475
Klíčová slova: nucleus-nucleus collisions * 0.9 TEV * energy * quark
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 6.668, rok: 2001

The minimum-bias multiplicity distribution and the transverse momentum and pseudorapidity distributions for central collisions have been measured for negative hadrons (h(-)) in Au + Au interactions at roots(NN) = 130 GeV. The multiplicity density at midrapidity for the 5% most central interactions is dN(h)-/d eta(eta =0) = 280 +/- (stat) +/- 20(syst), an increase per participant of 38% relative to p (p) over bar collisions at the same energy. The mean transverse momentum is 0.508 +/- O.012 GeV/c and is larger than in central Pb + Pb collisions at lower energies. The scaling of the h(-) yield per participant is a strong function of p(perpendicular to). The pseudorapidity distribution is almost constant within eta < 1.
Trvalý link: http://hdl.handle.net/11104/0081959