Two-photon and two-gluon decays of p-wave heavy quarkonium using a covariant light-front approach

被引:33
作者
Hwang, Chien-Wen [1 ]
Guo, Rurng-Sheng [1 ]
机构
[1] Natl Kaohsiung Normal Univ, Dept Phys, Kaohsiung 824, Taiwan
来源
PHYSICAL REVIEW D | 2010年 / 82卷 / 03期
关键词
FORM-FACTORS; ANNIHILATION RATE; QCD PREDICTIONS; MODEL; MESONS; QUARKS; RATES;
D O I
10.1103/PhysRevD.82.034021
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In this paper, a study of two-photon and two-gluon decays in the context of p-wave heavy quarkonia is presented. Within the covariant light-front framework, the annihilation rates of scalar and tensor quarkonium states are derived. In the absence of free parameters in this case, the results for the charmonium decay widths are consistent with the experimental data. However, in comparison to other theoretical calculations, there are large discrepancies in our results regarding bottomonia.
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页数:10
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