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
收藏
页码：169 / 177
页数：9
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