HBT correlations and charge ratios in multiple production of pions
نویسنده
چکیده
The influence of the HBT effect on the multiplicity distribution and charge ratios of independently produced pions is studied. It is shown that, for a wide class of models, there is a critical point, where the average number of pions becomes very large and the multiplicity distibution becomes very broad. In this regime unusual charge ratios (”centauros”, ”anticentauros”) are strongly enhanced. The prospects for reaching this regime are discussed.
منابع مشابه
/ 98 03 40 8 v 2 3 1 M ar 1 99 8 HBT correlations and charge ratios in multiple production of pions
The influence of the HBT effect on the multiplicity distribution and charge ratios of independently produced pions is studied. It is shown that, for a wide class of models, there is a critical point, where the average number of pions becomes very large and the multiplicity distibution becomes very broad. In this regime unusual charge ratios (" centauros " , " anticentauros ") are strongly enhan...
متن کامل0 M ar 1 99 8 HBT correlations and charge ratios in multiple production of pions
The influence of the HBT effect on the multiplicity distribution and charge ratios of independently produced pions is studied. It is shown that, for a wide class of models, there is a critical point, where the average number of pions becomes very large and the multiplicity distibution becomes very broad. In this regime unusual charge ratios (" centauros " , " anticentauros ") are strongly enhan...
متن کاملEffects of HBT correlations on flow measurements
The methods currently used to measure collective flow in nucleus–nucleus collisions assume that the only azimuthal correlations between particles are those arising from their correlation with the reaction plane. However, quantum HBT correlations also produce short range azimuthal correlations between identical particles. This creates apparent azimuthal anisotropies of a few percent when pions a...
متن کاملFemtoscopic Correlations in Multiparticle Production and Beta-Decay
The momentum correlations of two or more particles at small relative momenta in their center-of-mass (c.m.) system are widely used to study space-time characteristics of the production processes on a level of fm = 10−15 m, so serving as a correlation femtoscopy tool. Particularly, for non-interacting identical particles, like photons, or to some extent pions, these correlations result from the ...
متن کاملResults on Identified Hadrons from the PHENIX Experiment at RHIC
Recent results on identified hadrons from the PHENIX experiment in Au+Au collisions at mid-rapidity at √ sNN = 200 GeV are presented. The centrality dependence of transverse momentum distributions and particle ratios for identified charged hadrons are studied. The transverse flow velocity and freeze-out temperature are extracted from pT spectra within the framework of a hydrodynamic collective ...
متن کامل