Charm and hidden charm scalar mesons in the nuclear medium

被引：39
|
作者：
Molina, R. [1 ,4 ]
Gamermann, D. [1 ,4 ]
Oset, E. [1 ,4 ]
Tolos, L. [2 ,3 ]
机构：
[1] Univ Valencia, CSIC, Inst Invest Paterna, Dept Fis Teor, Valencia 46071, Spain
[2] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, D-60438 Frankfurt, Germany
[3] Univ Groningen, Theory Grp, KVI, NL-9747 AA Groningen, Netherlands
[4] Univ Valencia, CSIC, Inst Invest Paterna, Ctr Mixto,IFIC, Valencia 46071, Spain
来源：
EUROPEAN PHYSICAL JOURNAL A | 2009年 / 42卷 / 01期
关键词：
CHIRAL-SYMMETRY RESTORATION; PI-PI INTERACTION; PHI-PHOTOPRODUCTION; MULTIQUARK HADRONS; UNITARY APPROACH; LOCAL SYMMETRY; NN INTERACTION; VECTOR-MESONS; HEAVY MESONS; GAUGE BOSON;
D O I：
10.1140/epja/i2009-10853-y
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：
We study the renormalization of the properties of low-lying charm and hidden charm scalar mesons in a nuclear medium, concretely of the D(s0)(2317) and the theoretical hidden charm state X(3700). We find that for the D(s0)(2317), with negligible width at zero density, the width becomes about 100 MeV at normal nuclear-matter density, while in the case of the X(3700) the width becomes as large as 200 MeV. We discuss the origin of this new width and trace it to reactions occurring in the nucleus, while offering a guideline for future experiments testing these changes. We also show how those medium modifications will bring valuable information on the nature of the scalar resonances and the mechanisms of the interaction of D mesons with nucleons and nuclei.
引用
收藏
页码：31 / 42
页数：12
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