Three-Pion Interferometry of Relativistic Nuclear Collisions

Details Three-Pion Interferometry of Relativistic Nuclear Collisions Three-Pion Interferometry of Relativistic Nuclear Collisions

1999-09-17

arxiv.org/abs/nucl-th/9909043v1

Phys.Rev. C60 (1999) 064904

Physics

Nuclear Physics

Nuclear Theory

19 pages, 16 figures, to be published in Phys. Rev. C

Scientific paper

10.1103/PhysRevC.60.064904

Three-pion interferometry is investigated for new information on the space-time structure of the pion source created in ultra-relativistic heavy-ion collisions. The two- and three-pion correlations are numerically computed for incoherent source functions based on the Bjorken hydrodynamical model, over a wide range of the kinematic variables. New information provided by three-pion interferometry, different from that provided by two-pion interferometry, should appear in the phases of the Fourier transform of the source function. Variables are identified that would be sensitive to the phases and suitable for observation. For a positive, chaotic source function, however, a variation of the three-pion phase is found to be difficult to extract from experiments. Effects of asymmetry of the source function are also examined.

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