Study of charmless decays B^±→ K^0_S K^0_S h^± (h=K,π) at Belle
The Belle Collaboration,A. Abdesselam, I. Adachi,K. Adamczyk,J. K. Ahn, H. Aihara,S. Al Said, K. Arinstein,Y. Arita,D. M. Asner, H. Atmacan, V. Aulchenko,T. Aushev, R. Ayad, T. Aziz, V. Babu,I. Badhrees, S. Bahinipati,A. M. Bakich, Y. Ban,V. Bansal,E. Barberio,M. Barrett,W. Bartel, P. Behera, C. Beleno,K. Belous,M. Berger,F. Bernlochner,D. Besson,V. Bhardwaj,B. Bhuyan, T. Bilka,J. Biswal, T. Bloomfield,A. Bobrov,A. Bondar,G. Bonvicini,A. Bozek, M. Bracko,N. Braun, F. Breibeck,J. Brodzicka,T. E. Browder, L. Cao, G. Caria, D. Cervenkov, M. -C. Chang, P. Chang, Y. Chao, V. Chekelian,A. Chen, K. -F. Chen,B. G. Cheon, K. Chilikin, R. Chistov, K. Cho,V. Chobanova, S. -K. Choi, Y. Choi,S. Choudhury, D. Cinabro, J. Crnkovic,S. Cunliffe, T. Czank, M. Danilov, N. Dash,S. Di Carlo, J. Dingfelder,Z. Dolezal, T. V. Dong, D. Dossett, Z. Drasal, A. Drutskoy,S. Dubey, D. Dutta,S. Eidelman, D. Epifanov,J. E. Fast,M. Feindt, T. Ferber,A. Frey,O. Frost,B. G. Fulsom,R. Garg,V. Gaur, N. Gabyshev, A. 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P. Zhang,L. Zhao,V. Zhilich,V. Zhukova, V. Zhulanov,T. Zivko, A. Zupanc,N. Zwahlen
arXiv: High Energy Physics - Experiment（2018）
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摘要
We report a search for charmless hadronic decays of charged B mesons to the final states K^0_S K^0_S K^± and K^0_S K^0_Sπ^± . The results are based on a 711 fb^-1 data sample that contains 772 × 10^6 B B̅ pairs, and was collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^+e^- collider. For B^±→ K^0_S K^0_S K^± decays, the measured branching fraction and direct CP asymmetry are [10.64±0.49(stat)± 0.44(syst)]×10^-6 and [-0.6±3.9(stat)± 3.4(syst)] respectively. In the absence of a statistically significant signal for B^±→ K^0_S K^0_Sπ^±, we set the 90 upper limit on its branching fraction at 1.14 × 10^-6.
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charmless decays
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