Multiplicity Distribution and Spectra of Negatively Charged Hadrons in Au+Au Collisions at

By C. Adler, Z. Ahammed, C. Allgower, J. Amonett, B. Anderson, M. Anderson, G. S. Averichev, J. Balewski, O. Barannikova, L. Barnby and 279 more. 2001

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The minimum-bias multiplicity distribution and the transverse momentum and pseudorapidity distributions for central collisions have been measured for negative hadrons (h{sup -}) in Au+Au interactions at s{sub NN}=130 GeV . The multiplicity density at midrapidity for the 5% most central interactions is dN{sub h{sup -}}/d{eta}|{sub {eta}=0} =280{+-}1(stat){+-}20(syst) , an increase per participant of 38% relative to p{bar p} collisions at the same energy. The mean transverse momentum is 0.508{+-}0.012 GeV/c and is larger than in central Pb+Pb collisions at lower energies. The scaling of the h{sup -} yield per participant is a strong function of p{sub {perpendicular}} . The pseudorapidity distribution is almost constant within |{eta}|<1 .

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/66bd51c074830c75138ad39289c899f5311bce34