Search for rare decays B+ → Ds() + η, Ds () + (K)over-bar0, D+η, and D+K0

被引：0

作者：

Kumar, M.

Bhardwaj, V.

Lalwani, K.

Adachi, I.

Aihara, H.

Asner, D. M.

Aushev, T.

Babu, V.

Behera, P.

Belous, K.

Bennett., J.

Bessner., M.

Bhuyan., B.

Bilka., T.

Bobrov, A.

Bodrov, D.

Bonvicini, G.

Borah, J.

Bozek, A.

Bracko, M.

Branchini, P.

Browder, T. E.

Budano, A.

Campajola, M.

Cervekov, D.

Chang, M. -c.

Chang, P.

Cheon, B. G.

Chilikin, K.

Cho, H. E.

Cho, K.

Cho, S. -j.

Choi, S. -k.

Choi, Y.

Choudhury, S.

Cinabro, D.

Das, S.

Dash, N.

De Pietro, G.

Dhamija, R.

Di Capua, F.

Dingfelder, J.

Dolezal, Z.

Dong, T. V.

Dossett, D.

Epifanov, D.

Ferlewicz, D.

Fulsom, B. G.

Garg, R.

Gaur, V.

机构：

来源：

PHYSICAL REVIEW D | 2023年 / 107卷 / 03期

基金：

新加坡国家研究基金会; 欧盟地平线“2020”; 美国国家科学基金会; 澳大利亚研究理事会; 奥地利科学基金会; 日本学术振兴会; 瑞士国家科学基金会; 中国国家自然科学基金;

关键词：

CP-VIOLATION;

D O I：

10.1103/PhysRevD.107.L031101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a study of rare decay modes B+->. D(s)(+)h(0), B+-> D-s(*)+h(0) and B+ -> D(+)h(0), where h(0) denotes the neutral meson eta or K-0, using a data sample of (772 +/- 10) x 10(6) B (B) over bar events produced at the.(sic) (4S) resonance. The data were collected by the Belle detector operating at the asymmetric-energy KEKB collider. We find no evidence for these decays, so we set upper limits at the 90% confidence level on the branching fractions of B+ -> D(s)(+)h(0), D(s)(*)(+)h(0), and D(+)h(0) decay modes. Along with these rare decay modes, we report improved measurements of the color-suppressed decay branching fractions B((B) over bar (0)->. D-0 eta) = (26.6 +/- 1.2 +/- 2.1) x 10(-5) and B((B) over bar (0) -> D-0(K) over bar (0)) = (5.6 +/- 0.5 +/- 0.2) x 10(-5). The first and second quoted uncertainties are statistical and systematic, respectively.

引用

页数：7

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Search for rare decays B+ → Ds(*) + η, Ds (*) + (K)over-bar0, D+η, and D+K0

Search for rare decays B+ → Ds() + η, Ds () + (K)over-bar0, D+η, and D+K0