Contributions of the subprocess K0*(1430) → Kη′ in the charmless three-body B meson decay

被引：0
作者：
Ma, Ai-Jun [1 ]
Wang, Wen-Fei [2 ,3 ,4 ,5 ]
机构：
[1] Nanjing Inst Technol, Sch Math & Phys, Nanjing 211167, Jiangsu, Peoples R China
[2] Shanxi Univ, Inst Theoret Phys, Taiyuan 030006, Shanxi, Peoples R China
[3] Shanxi Univ, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Shanxi, Peoples R China
[4] Univ Barcelona, Dept Fis Quant & Astrofis, Marti i Franques 1, Barcelona 08028, Spain
[5] Univ Barcelona, Inst Ciencies Cosmos ICCUB, Fac Fis, Marti i Franques 1, Barcelona 08028, Spain
来源：
PHYSICAL REVIEW D | 2024年 / 109卷 / 05期
基金：
中国国家自然科学基金;
关键词：
QUASI-2-BODY DECAYS; MIXING ANGLE; RESONANCE CONTRIBUTIONS; TRANSITIONS; CONSTANTS; MODES; RHO; PI;
D O I：
10.1103/PhysRevD.109.056017
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the contributions for K eta' pair originating from the scalar intermediate state K-0*(1430) in the three-body decays B -> K eta'h (h 1/4 pi, K) within the perturbative QCD approach. The contribution of K-0*(1430) -> K eta' is described by the Flatte ' formula with coupled channels K pi, K eta, and K eta'. The strong coupling constants g(K0*K eta(')) are extracted from g(K0*K pi) within flavor SU(3) symmetry. In spite of the strong depression by phase space near the threshold of K eta', the CP averaged branching fractions for the B -> K-0*(1430) h -> K eta'h decays are predicted to be on the order of 10(-8) to 10(-5), which are non-negligible for the corresponding three-body B decays. Since the K eta system is almost decoupled from the even-spin strange mesons under flavor SU(3) symmetry, those quasi-two-body B decays with subprocess K-0*(1430) -> K eta shall have quite small branching ratios and are not taken into account in this work. We also estimate that the branching fraction for K-0*(1430 -> K eta' is about one fifth of that for K-0*(1430 -> K pi. The predictions for the relevant decays are expected to be tested by the LHCb and Belle-II experiments in the future.
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