Nuclear medium effects on the (K)over-bar* meson

被引：0

作者：

Tolos, Laura ^{[1
]}

Molina, Raquel ^{[2
]}

Oset, Eulogio ^{[2
]}

Ramos, Angels ^{[3
]}

机构：

[1] Campus Univ Autonoma Barcelona, Fac Ciencies, Inst Ciencias Espacio IEEC CSIC, E-08193 Bellaterra, Barcelona, Spain

[2] Ctr Mixto CSIC UV, Inst Fis Corpuscular, Inst Invest Paterna, Valencia 46071, Spain

[3] Univ Barcelona, Dept Estruct & Constituents Mat, E-08028 Barcelona, Spain

来源：

NUCLEAR PHYSICS A | 2012年 / 881卷

关键词：

(K)over-bar* meson; Hidden-gauge formalism; (K)over-bar* spectral function; Transparency ratio; HIDDEN LOCAL SYMMETRY; VECTOR-MESONS; GAUGE BOSON; MATTER; LOOPS; DECAY; OMEGA; RHO;

D O I：

10.1016/j.nuclphysa.2011.12.011

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The (K) over bar* meson in dense matter is analyzed by means of a unitary approach in coupled channels based on the local hidden gauge formalism. The (K) over bar* self-energy and the corresponding (K) over bar* spectral function in the nuclear medium are obtained. We observe that the (K) over bar* develops a width in matter up to five times bigger than in free space. We also estimate the transparency ratio of the gamma A -> K+K*(-) A' reaction. This ratio is an excellent tool to detect experimentally modifications of the (K) over bar* meson in dense matter. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：169 / 177

页数：9

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