Search for Bs0 → l∓τ± with the semi-leptonic tagging method at Belle

被引：0
作者：
Nayak, L.
Nishida, S.
Giri, A.
Adachi, I.
Aihara, H.
Asner, D. M.
Atmacan, H.
Aulchenko, V.
Aushev, T.
Ayad, R.
Babu, V.
Bahinipati, S.
Banerjee, S.
Bauer, M.
Behera, P.
Belous, K.
Bennett, J.
Bessner, M.
Bhuyan, B.
Biswas, D.
Bodrov, D.
Borah, J.
Bozek, A.
Bracko, M.
Branchini, P.
Browder, T. E.
Budano, A.
Campajola, M.
Cervenkov, D.
Chang, M. -c.
Cheon, B. G.
Chilikin, K.
Cho, H. E.
Cho, K.
Choi, S. -k.
Choi, Y.
Choudhury, S.
Cinabro, D.
Cochran, J.
Das, S.
Dash, N.
De Nardo, G.
De Pietro, G.
Dhamija, R.
Di Capua, F.
Dingfelder, J.
Dolezal, Z.
Dong, T. V.
Dossett, D.
Dubey, S.
机构：
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2023年 / 08期
基金：
奥地利科学基金会; 日本学术振兴会; 美国国家科学基金会; 澳大利亚研究理事会; 新加坡国家研究基金会; 瑞士国家科学基金会; 中国国家自然科学基金; 美国能源部; 欧盟地平线“2020”;
关键词：
B Physics; e(+)-e(-) Experiments; Flavour Physics; IDENTIFICATION;
D O I：
10.1007/JHEP08(2023)178
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We present a search for the lepton-flavor-violating decays B-s(0) -> l(-/+) tau(+/-), where l = e, mu, using the full data sample of 121 fb(-1) collected at the Gamma(5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We use B-s(0)(B) over bar (0)(s) events in which one B-s(0) meson is reconstructed in a semileptonic decay mode and the other in the signal mode. We find no evidence for B-0(s) -> l(-/+) tau(+/-) decays and set upper limits on their branching fractions at 90% confidence level as B(B-s(0) -> e(-/+)tau(+/-)) < 14 x 10(-4) and B(B-s(0) -> mu(-/+)tau(+/-)) < 7.3x10(-4). Our result represents the first upper limit on the B-0(s) -> e(-/+)tau(+/-) decay rate.
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页数：13
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