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Two-dimensional analysis of Bose-Einstein correlations in hadronic Z decays at LEP

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Delaere, Christophe [UCL] Lemaitre, Vincent [UCL]

Bose-Einstein correlations are studied in pairs of charged pions from hadronic Z decays, collected by the ALEPH detector. The correlation function, measured using either the unlike-sign or the mixed reference sample, is studied in terms of the Lorentz-invariant four-momentum difference and its transverse, Q(T), and longitudinal, Q(L), components with respect to the longitudinal centre-of-mass system. Values for the correlation radii, R-T and R-L, are obtained from the fit of the Goldhaber parametrisation. The results indicate that the correlation radii values depend on the chosen kind of reference sample and on the two-jet purity.

Document type Article de périodique (Journal article) – Article de recherche
Publication date 2004
Language Anglais
Journal information "European Physical Journal C" - Vol. 36, no. 2, p. 147-159 (2004)
Peer reviewed yes
Publisher SPRINGER (NEW YORK, NY 10013 USA )
issn 1434-6044
Publication status Publié
Affiliation UCL - SST/IRMP - Institut de recherche en mathématique et physique
Keywords E+E ANNIHILATION ; INTENSITY INTERFEROMETRY ; PHYSICS ; ENERGY ; Z(0) ; INTERFERENCE ; DETECTOR ; ALEPH ; PIONS ; 1221
Links
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Bibliographic reference Delaere, Christophe ; Lemaitre, Vincent ; et. al. Two-dimensional analysis of Bose-Einstein correlations in hadronic Z decays at LEP . In: European Physical Journal C, Vol. 36, no. 2, p. 147-159 (2004)
Permanent URL http://hdl.handle.net/2078.1/71947