Latest documents http://publikationen.ub.uni-frankfurt.de/index/index/ Sun, 10 Apr 2005 08:32:50 +0200 Sun, 10 Apr 2005 08:32:50 +0200 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3762 T. Alber; NA49 Collaboration article http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3762 Tue, 04 Oct 2005 08:32:50 +0200 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3771 We present the measured correlation functions for pi+ pi-, pi- pi- and pi+ pi+ pairs in central S+Ag collisions at 200 GeV per nucleon. The Gamov function, which has been traditionally used to correct the correlation functions of charged pions for the Coulomb interaction, is found to be inconsistent with all measured correlation functions. Certain problems which have been dominating the systematic uncertainty of the correlation analysis are related to this inconsistency. It is demonstrated that a new Coulomb correction method, based exclusively on the measured correlation function for pi+ pi- pairs, may solve the problem. T. Alber; NA35 Collaboration article http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3771 Fri, 30 Sep 2005 09:30:28 +0200 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3780 The transverse momentum and rapidity distributions of net protons and negatively charged hadrons have been measured for minimum bias proton-nucleus and deuteron-gold interactions, as well as central oxygen-gold and sulphur-nucleus collisions at 200 GeV per nucleon. The rapidity density of net protons at midrapidity in central nucleus-nucleus collisions increases both with target mass for sulphur projectiles and with the projectile mass for a gold target. The shape of the rapidity distributions of net protons forward of midrapidity for d+Au and central S+Au collisions is similar. The average rapidity loss is larger than 2 units of rapidity for reactions with the gold target. The transverse momentum spectra of net protons for all reactions can be described by a thermal distribution with temperatures' between 145 +- 11 MeV (p+S interactions) and 244 +- 43 MeV (central S+Au collisions). The multiplicity of negatively charged hadrons increases with the mass of the colliding system. The shape of the transverse momentum spectra of negatively charged hadrons changes from minimum bias p+p and p+S interactions to p+Au and central nucleus-nucleus collisions. The mean transverse momentum is almost constant in the vicinity of midrapidity and shows little variation with the target and projectile masses. The average number of produced negatively charged hadrons per participant baryon increases slightly from p+p, p+A to central S+S,Ag collisions. T. Alber; NA35 Collaboration preprint http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/3780 Fri, 30 Sep 2005 08:54:35 +0200