Measurement of the B+/B0 production ratio in e+e− collisions at the ϒ(4S) resonance using B→J/ψ(ℓℓ)K decays at Belle
Measurement of the B+/B0 production ratio in e+e− collisions at the ϒ(4S) resonance using B→J/ψ(ℓℓ)K decays at Belle
复制标题
使用 B-J/Ï(--)K 在 Belle 处衰减测量 Ï(4S) 共振下 e e- 碰撞中的 B /B0 生成比
DOI:
10.1103/physrevd.107.l031102
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发表时间:
2023
影响因子:
5
通讯作者:
Ayad, R.
中科院分区:
文献类型:
--
作者:
Choudhury, S.;Sandilya, S.;Trabelsi, K.;Giri, A.;Adachi, I.;Aihara, H.;Asner, D. M.;Atmacan, H.;Aushev, T.;Ayad, R.
We measure the ratio of branching fractions for the ϒ(4S) decays toandusingandsamples, wherestands for(or), withof data collected at the ϒ(4S) resonance with the Belle detector. We find the decay rate ratio of ϒ(4S)→B+B- over ϒ(4S)→B0B¯0 to be, which is the most precise measurement to date. The first and second uncertainties are statistical and systematic, respectively, and the third uncertainty is due to the assumption of isospin symmetry in.