Squeezed particle-antiparticle correlations

Details Squeezed particle-antiparticle correlations Squeezed particle-antiparticle correlations

2009-01-08

arxiv.org/abs/0901.0963v1

Acta Phys.Polon.B40:1225-1230,2009

Physics

Nuclear Physics

Nuclear Theory

6 pages, 4 figures, presented at the IV Workshop on Particle Correlations and Femtoscopy (WPCF 2008), Krakow, Poland, Septembe

Scientific paper

A novel type of correlation involving particle-antiparticle pairs was found out in the 1990's. Currently known as Squeezed or Back-to-Back Correlations (BBC), they should be present if the hadronic masses are modified in the hot and dense medium formed in high energy heavy ion collisions. Although well-established theoretically, such hadronic correlations have not yet been observed experimentally. In this phenomenological study we suggest a promising way to search for the BBC signal, by looking into the squeezed correlation function of phi phi and K^+ K^- pairs at RHIC energies, as function of the pair average momentum, K_{12}=(k_1+k_2)/2. The effects of in-medium mass-shift on the identical particle correlations (Hanbury-Brown & Twiss effect) are also discussed.

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