SQUEEZED PARTICLE-ANTIPARTICLE CORRELATIONS
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Data
2009-04-01
Autores
Padula, Sandra S. [UNESP]
Dudek, Danuce M. [UNESP]
Socolowski, Otavio
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Polish Acad Sciences Inst Physics
Resumo
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 and Twiss effect) are also discussed.
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Acta Physica Polonica B. Warsaw: Polish Acad Sciences Inst Physics, v. 40, n. 4, p. 1225-1230, 2009.