Genuine Three-Body Bose-Einstein Correlations and Percolation of Strings
نویسنده
چکیده
Recent data on the genuine three-body Bose-Einstein correlations are consistent with fully coherent pion production in S-Pb collisions but with uncoherent pion production in central Pb-Pb collisions. These results, unexpected from conventional approaches, are naturally explained by the percolation of colour strings produced in the collisions and subsequent incoherent fragmentation of the formed clusters. 25.75Gz; 25.75.-q; 12.38.Mh Typeset using REVTEX 1 The strength of the genuine three-particle Bose-Einstein correlations can be measured by the weight factor ω introduced in [1]: ω = {
منابع مشابه
BOSE-EINSTEIN CORRELATIONS IN PION PRODUCTION AT TRISTAN
Measurement of Bose-Einstein correlations in the production of like-signed pion pairs has been made with the AMY detector at TRISTAN. An event sample of 10120 hadronic events with ranging between 50 to 61 GeV was used. These measurements indicate a strength of the enhancement of ? = 0.61M.07, with a typical correlation size of Ro = 1.16±.08 fm. This value of ? is consistent with measurem...
متن کاملOn the Normalisation and Subtraction Methods Applied to the OPAL 3π Bose-Einstein Correlations
The study of the so called “genuine” Bose-Einstein correlations (BEC) of three identical charged pions requires the subtraction of the 2nd order BEC of the pion pairs. The OPAL subtraction method used in the BEC study of the π±π±π± system, which utilised mixed charged pions triplets of the data themselves, is investigated in detail. The derivation of the subtraction formula is explained.
متن کاملSTRING and PARTON PERCOLATION
A brief review to string and parton percolation is presented. After a short introduction, the main consequences of percolation of color sources on the following observables in A-A collisions: J/ψ suppression, saturation of the multiplicity, dependence on the centrality of the transverse momentum fluctuations, Cronin effect and transverse momentum distributions, strength of the two and three bod...
متن کاملAnalyses of two and three pion Bose-Einstein Correlations using Coulomb wave functions
Using effective formulas we analyze the Bose-Einstein correlations (BEC) data corrected for Coulomb interactions provided by STAR Collaboration and the quasicorrected data (raw data with acceptance correction etc) on 2π and 3π BEC by using Coulomb wave function with coherence parameter included. The corresponding magnitudes of the interaction regions turn out to be almost the same: RCoul(2π) ≃ ...
متن کاملAnalyses of two and three pion Bose-Einstein Correlations using Coulomb wave function
Using effective formulas we analyze the Bose-Einstein correlations (BEC) data corrected for Coulomb interactions provided by STAR Collaboration and the quasicorrected data on 2π and 3π BEC by using Coulomb wave function with coherence parameter included. The corresponding magnitudes of the interaction regions turn out to be almost the same: RCoul(2π) ≃ 3 2RCoul(3π). RCoul means the size of inte...
متن کامل