Bose-Einstein study of position-momentum correlations of charged pions in hadronic Z0 decays

被引：0
作者：
Ciocca, C. [1 ]
机构：
[1] Univ Bologna, I-40126 Bologna, Italy
来源：
PROCEEDINGS OF THE 38TH INTERNATIONAL SYMPOSIUM ON MULTIPARTICLE DYNAMICS | 2009年
关键词：
D O I：
10.3204/DESY-PROC-2009-01/76
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Bose-Einstein correlations in pairs of identically charged pions produced in e(+)e(-) annihilations at Z(0) peak are studied for the first time assuming a dynamic emitting source. The correlation functions are analyzed in intervals of average pair transverse momentum and pair rapidity, to investigate correlations between pion production points and momenta. The Yano-Koonin and Bertsch-Pratt parameterizations are used to estimate the source parameters and the velocity of source elements with respect to the centre-of-mass frame. The source rapidity scales with pair rapidity, and both longitudinal and transverse dimensions decrease for increasing average pair transverse momenta, in agreement with an expanding source.
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页码：291 / 295
页数：5
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