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Abstract: A novel type of correlation involving particle-antiparticle pairs was foundout in the 1990-s. Currently known as Squeezed or Back-to-Back CorrelationsBBC, they should be present if the hadronic masses are modified in the hotand dense medium formed in high energy heavy ion collisions. Althoughwell-established theoretically, such hadronic correlations have not yet beenobserved experimentally. In this phenomenological study we suggest a promisingway to search for the BBC signal, by looking into the squeezed correlationfunction of phi phi and K^+ K^- pairs at RHIC energies, as function of the pairaverage momentum, K {12}=k 1+k 2-2. The effects of in-medium mass-shift onthe identical particle correlations Hanbury-Brown and Twiss effect are alsodiscussed.

Author: Sandra S. Padula, Danuce M. Dudek, Otavio Socolowski Jr

Source: https://arxiv.org/

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