Radiative decays of the Y(3940), Z(3930), and the X(4160) as dynamically generated resonances

被引：28

作者：

Branz, Tanja ^{[1
]}

Molina, Raquel ^{[2
,3
]}

Oset, Eulogio ^{[2
,3
]}

机构：

[1] Univ Tubingen, Inst Theoret Phys, Kepler Ctr Astro & Particle Phys, D-72076 Tubingen, Germany

[2] Ctr Mixto Univ Valencia, CSIC, Inst Invest Paterna, Dept Fis Teor, Valencia 46071, Spain

[3] Ctr Mixto Univ Valencia, CSIC, Inst Invest Paterna, IFIC, Valencia 46071, Spain

来源：

PHYSICAL REVIEW D | 2011年 / 83卷 / 11期

关键词：

GAUGE BOSON; MESON;

D O I：

10.1103/PhysRevD.83.114015

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the radiative decay properties of the charmoniumlike X, Y, and Z mesons generated dynamically from vector-meson-vector-meson interaction in the framework of a unitarized hidden-gauge formalism. In the present work, we calculate the one-and two-photon decay widths of the hidden-charm Y(3940), Z(3930) [or X(3915)], and X(4160) mesons in the framework of the vector-meson dominance formalism. We obtain good agreement with the experiment in case of the two-photon width of the X(3915), which we associate to the 2(+) resonance that we find at 3922 MeV. However, in view of discrepancies with a different approach that also considers the resonances as molecular states, we urge independent calculations along the same lines to further clarify the issue.

引用

页数：9

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