Abstract
In the hot and dense hadronic sources formed in high energy heavy-ion collisions, the particle interactions in medium might lead to a measurable back-to-back correlation (BBC) of boson–antiboson pairs. We calculate the BBC functions of ϕϕ and K+K-for anisotropic expanding sources. The dependences of the BBC on the particle momentum and source expanding velocity are investigated. The results indicate that the BBC functions increase with the magnitude of particle momentum and exhibit an obvious dependence on the direction of the momentum for the anisotropic sources. As the source expanding velocity decreases, the BBC function decreases when the particle momentum is approximately perpendicular to the source velocity, and the BBC function increases when the particle momentum is approximately parallel to the source velocity.
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