Squeezed K{sup +}K{sup -} correlations in high energy heavy ion collisions

Journal Article · Wed Sep 15 00:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.82.034905· OSTI ID:21419545

Dudek, Danuce M; Padula, Sandra S ^[1]

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1. Instituto de Fisica Teorica-UNESP, C. P. 70532-2, 01156-970 Sao Paulo, SP (Brazil)

The hot and dense medium formed in high energy heavy ion collisions may modify some hadronic properties. In particular, if hadron masses are shifted in-medium, it was demonstrated that this could lead to back-to-back squeezed correlations (BBC) of particle-antiparticle pairs. Although well-established theoretically, the squeezed correlations have not yet been discovered experimentally. A method has been suggested for the empirical search of this effect, which was previously illustrated for {phi}{phi} pairs. We apply here the formalism and the suggested method to the case of K{sup +}K{sup -} pairs, since they may be easier to identify experimentally. The time distribution of the emission process plays a crucial role in the survival of the BBC's. We analyze the cases where the emission is supposed to occur suddenly or via a Lorentzian distribution, and compare with the case of a Levy distribution in time. Effects of squeezing on the correlation function of identical particles are also analyzed.

• OSTI ID: 21419545
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 82, Issue 3; Other Information: DOI: 10.1103/PhysRevC.82.034905; (c) 2010 The American Physical Society; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANTIPARTICLES
COMPARATIVE EVALUATIONS
CORRELATION FUNCTIONS
CORRELATIONS
DISTRIBUTION
EMISSION
HEAVY ION REACTIONS
KAONS MINUS
KAONS PLUS
MASS
ANTIMATTER
BOSONS
ELEMENTARY PARTICLES
EVALUATION
FUNCTIONS
HADRONS
KAONS
MATTER
MESONS
NUCLEAR REACTIONS
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES