TY - JOUR
T1 - Bose–Einstein study of position–momentum correlations of charged pions in hadronic Z0 decays
AU - Charlton, David
AU - Jovanovic, Predrag
AU - Bell, PJ
AU - Hawkes, Christopher
AU - Watkins, Peter
AU - Watson, Alan
AU - Watson, Nigel
AU - Wilson, John
AU - Abbiendi, G
AU - The OPAL Collaboration
PY - 2007/11/10
Y1 - 2007/11/10
N2 - A study of Bose-Einstein correlations in pairs of identically charged pions produced in e(+)e(-) annihilations at the Z(0) peak has been performed for the first time assuming a non-static emitting source. The results are based on the high statistics data obtained with the OPAL detector at LEP. The correlation functions have been analyzed in intervals of the average pair transverse momentum and of the pair rapidity, in order to study possible correlations between the pion production points and their momenta (position momentum correlations). The Yano-Koonin and the Bertsch-Pratt parameterizations have been fitted to the measured correlation functions to estimate the geometrical parameters of the source as well as the velocity of the source elements with respect to the overall centre-of-mass frame. The source rapidity is found to scale approximately with the pair rapidity, and both the longitudinal and transverse source dimensions are found to decrease for increasing average pair transverse momenta.
AB - A study of Bose-Einstein correlations in pairs of identically charged pions produced in e(+)e(-) annihilations at the Z(0) peak has been performed for the first time assuming a non-static emitting source. The results are based on the high statistics data obtained with the OPAL detector at LEP. The correlation functions have been analyzed in intervals of the average pair transverse momentum and of the pair rapidity, in order to study possible correlations between the pion production points and their momenta (position momentum correlations). The Yano-Koonin and the Bertsch-Pratt parameterizations have been fitted to the measured correlation functions to estimate the geometrical parameters of the source as well as the velocity of the source elements with respect to the overall centre-of-mass frame. The source rapidity is found to scale approximately with the pair rapidity, and both the longitudinal and transverse source dimensions are found to decrease for increasing average pair transverse momenta.
U2 - 10.1140/epjc/s10052-007-0443-z
DO - 10.1140/epjc/s10052-007-0443-z
M3 - Article
VL - 52
SP - 787
EP - 803
JO - European Physical Journal C
JF - European Physical Journal C
IS - 4
ER -