Medium modifications of kaons in pion matter

被引：21

作者：

Martemyanov, BV

Faessler, A

Fuchs, C

Krivoruchenko, MI

机构：

[1] Inst Theoret & Expt Phys, Moscow 117259, Russia

[2] Univ Tubingen, Inst Theoret Phys, D-72076 Tubingen, Germany

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.93.052301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Kaon in-medium masses and mean-field potentials are calculated in isotopically symmetric pion matter to one loop of chiral perturbation theory. The results are extended to BNL RHIC temperatures using experimental data on piK scattering phase shifts. The kaon in-medium broadening results in an acceleration of the phi-->K (K) over bar decay. The increased apparent dilepton branching of the phi mesons, observed recently by the NA50, NA49, and PHENIX Collaborations at RHIC, is interpreted in terms of rescattering of secondary kaons inside the pion matter.

引用

页码：052301 / 1

页数：4

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