Update on strong and radiative decays of the Ds0*(2317) and Ds1(2460) and their bottom cousins

被引:0
|
作者
Fu, Hai-Long [1 ,2 ]
Griesshammer, Harald W. [3 ]
Guo, Feng-Kun [1 ,2 ]
Hanhart, Christoph [4 ,5 ]
Meissner, Ulf-G [4 ,5 ,6 ,7 ,8 ]
机构
[1] Chinese Acad Sci, CAS Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
[3] George Washington Univ, Inst Nucl Studies, Dept Phys, Washington, DC 20052 USA
[4] Forschungszentrum Julich, Inst Adv Simulat, Inst Kernphys, D-52425 Julich, Germany
[5] Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany
[6] Univ Bonn, Helmholtz Inst Strahlen & Kerphys, D-53115 Bonn, Germany
[7] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany
[8] Tbilisi State Univ, GE-0186 Tbilisi, Georgia
来源
EUROPEAN PHYSICAL JOURNAL A | 2022年 / 58卷 / 04期
基金
中国国家自然科学基金;
关键词
ISOSPIN-VIOLATING DECAYS; S-MESONS;
D O I
10.1140/epja/s10050-022-00724-8
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 isospin breaking and radiative decay widths of the positive-parity charm-strange mesons, D-s0* and D-s1, and their predicted bottom-strange counterparts, B-s0* and B-s1, as hadronic molecules are revisited. This is necessary, since the B-s0* and B-s1 masses used in (Cleven et al., Eur Phys J A 50:149, 2014) were too small, in conflict with the heavy quark flavour symmetry. Furthermore, not all isospin breaking contributions were considered. We here present a method to restore heavy quark flavour symmetry, correcting the masses of B-s0* and B-s1, and include the complete isospin breaking contributions up to next-to-leading order. With this we provide updated hadronic decay widths for all of D-s0*, D-s1, B-s0* and B-s1. Results for the partial widths of the radiative deays of D-s0*(2317) and D-s1(2460) are also renewed in light of the much more precisely measured D*(+) width. We find that B-s pi(0) and B-s gamma are the preferred channels for searching for B-s0* and B-s1, respectively.
引用
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页数:6
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