■u,d,s→ Du,d,sV(V = Dd,s-, K-, ρ-) weak decays

■u,d,s*→ Du,d,s*V(V = Dd,s*-, K*-, ρ-) weak decays

导出

摘要 Motivated by the rapid development of heavy flavor physics experiments, we study the tree-dominated nonleptonic ■u,d,s*→ Du,d,s*V(V = Dd,s*-, K*-, ρ-) decays within the factorization approach. The relevant transition form factors are calculated by employing the covariant light-front quark model. Helicity amplitudes are calculated and analyzed in detail, and a very clear hierarchical structure |H-0| ≈ 2|H00| > |H0-| ≈ |H| > |H0+| ≈ |H++| is presented.The branching fractions are computed and discussed. Numerically, the CKM-favored ■*q→ Dq*ρ-and Dq*Ds*- decays have relatively large branching fractions, ■O(10-8), and could be observed by LHC and Belle-II experiments in the future. Motivated by the rapid development of heavy flavor physics experiments, we study the tree-dominated nonleptonic B^-*u,d,s→D^*u,d,sV(V=Ds^*-,K^*-,ρ^-) decays within the factorization approach. The relevant transition form factors are calculated by employing the covariant light-front quark model. Helicity amplitudes are calculated and analyzed in detail, and a very clear hierarchical structure |H-0|≈2|H00|>|H0-|≈|H-|>|H0+|≈|H++| is presented. The branching fractions are computed and discussed. Numerically, the CKM-favored B^-*q→D^*qρ- and D^*qD^*-s decays have relatively large branching fractions,≥O(10^-8), and could be observed by LHC and Belle-II experiments in the future.

作者 Qin Chang Yunyun Zhang Xiaonan Li 常钦;张云云;李晓楠(Institute of Particle and Nuclear Physics,Henan Normal University,Henan 453007,China;School of physics and electronic technology,Liaoning Normal University,Liaoning 116029,China;School of physics and electronic engineering,Anyang Normal University,Henan 455000,China)

机构地区 Institute of Particle and Nuclear Physics School of physics and electronic technology School of physics and electronic engineering

出处《Chinese Physics C》 SCIE CAS CSCD 2019年第10期38-45,共8页 中国物理C（英文版）

基金 Supported by the National Natural Science Foundation of China(11875122 and 11475055) the Program for Innovative Research Team in University of Henan Province(19IRTSTHN018)

关键词 weak DECAY LIGHT-FRONT QUARK model heavy FLAVOR physics weak decay light-front quark model heavy flavor physics

分类号 O572.33 [理学—粒子物理与原子核物理]

引文网络
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Chinese Physics C

2019年第10期

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■u,d,s→ Du,d,sV(V = Dd,s-, K-, ρ-) weak decays

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