Squeezed particle-antiparticle correlations
Abstract
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.
Cite
@article{arxiv.0901.0963,
title = {Squeezed particle-antiparticle correlations},
author = {Sandra S. Padula and Danuce M. Dudek and Otavio Socolowski},
journal= {arXiv preprint arXiv:0901.0963},
year = {2009}
}
Comments
6 pages, 4 figures, presented at the IV Workshop on Particle Correlations and Femtoscopy (WPCF 2008), Krakow, Poland, September 11-14, 2008