Bose-Einstein Correlations in charged current muon-neutrino interactions in the NOMAD experiment at CERN NOMAD Collaboration
semanticscholar(2004)
摘要
Bose-Einstein Correlations in one and two dimensions have been studied, with high statistics, in charged current muon-neutrino interaction events collected with the NOMAD detector at CERN. In one dimension the Bose-Einstein effect has been analyzed with the Goldhaber and the Kopylov-Podgoretskii phenomenological parametrizations. The Goldhaber parametrization gives the radius of the pion emission region RG = 1.01 ± 0.05(stat) −0.06(sys) fm and for the chaoticity parameter the value λ = 0.40 ± 0.03(stat) −0.06(sys). Using the Kopylov-Podgoretskii parametrization yields RKP = 2.07 ± 0.04(stat) −0.14(sys) fm and λKP = 0.29 ± 0.06(stat) −0.04(sys). Different parametrizations of the long-range correlations have been also studied. The two-dimensional shape of the source has been investigated in the longitudinal co-moving frame. A significant difference between the transverse and the longitudinal dimensions is observed. The high statistics of the collected sample allowed the study of the Bose-Einstein correlations as a function of rapidity, charged particle multiplicity and hadronic energy. A weak dependence of both radius and chaoticity on multiplicity and hadronic energy is found.
更多查看译文
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要