Bose-Einstein correlations for three-dimensionally expanding, cylindrically symmetric, finite systems

Journal Article · Sun Sep 01 04:00:00 EDT 1996 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.54.1390· OSTI ID:383351

Csoergo, T; Loerstad, B ^[1]

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1. Department of Physics, Columbia University, New York, New York 10027 (United States)

There are {ital two} {ital types} {ital of} {ital scales} present simultaneously in the spacelike as well as in the timelike directions in a model class describing a cylindrically symmetric, finite, three-dimensionally expanding boson source. One type of scale is related to the finite lifetime or geometrical size of the system, and the other type is governed by the rate of change of the local momentum distribution in the considered temporal or spatial direction. The parameters of the Bose-Einstein correlation function may obey an {ital M}{sub {ital t}} scaling, as observed in S+Pb and Pb+Pb reactions at CERN SPS. This {ital M}{sub {ital t}} scaling may imply that the Bose-Einstein correlation functions view only a small part of a large and expanding system. The full sizes of the expanding system at the last interaction are shown to be measurable with the help of the invariant momentum distribution of the emitted particles. A vanishing duration parameter can also be generated, with a specific {ital M}{sub {ital t}} dependence, in the considered model class. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 383351
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 3 Vol. 54; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BOSE-EINSTEIN STATISTICS
BOSONS
CORRELATION FUNCTIONS
DISTRIBUTION
EXPANSION
HEAVY ION REACTIONS
LEAD 197
LIFETIME
LINEAR MOMENTUM
SCALING
SULFUR 32 REACTIONS
SYMMETRY
THREE-DIMENSIONAL CALCULATIONS