Measurement of the branching fractions of Ds+→η′X and Ds+→η′ρ+ in e+e−→Ds+Ds−

M. Ablikim,M. N. Achasov, Xiaocong Ai,O. Albayrak,M. Albrecht, D. J. Ambrose,A. Amoroso,Fenfen An, Q. An,J. Z. Bai,R. Baldini Ferroli, Y. Ban,D. W. Bennett,J. V. Bennett, M. Bertani, D. Bettoni,J. M. Bian, F. Bianchi, E. Boger,Igor Boyko,R. A. Briere,H. Cai, X. Cai,Orhan Cakir,A. Calcaterra,G. F. Cao,Serkant Ali Cetin,J. F. Chang, G. A. Chelkov,G. F. Chen,H. S. Chen,J. C. Chen, M. L. Chen,Sai-Juan Chen,X. C. Chen,X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu,G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi,D. V. Dedovich,Z. Y. Deng, A. G. Denig, I. Denysenko,M. Destefanis,F. De Mori, Y. Ding, C. Dong, J. Dong,L. Y. Dong,M. Y. Dong, S. X. Du, P. F. Duan, E. E. Eren, J. Z. Fan, J. Fang, S. S. Fang, X. Fang,Yaquan Fang, L. Fava, F. Feldbauer,Giulietto Felici, C. Q. Feng, E. Fioravanti, M. Fritsch, C. D. Fu, Q. Gao,X. Y. Gao,Y. Gao, Z. Gao, I. Garzia, C. Geng, K. Goetzen, W. X. Gong, W. Gradl,M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo,Y. Guo,Y. P. Guo, Z. Haddadi, A. Hafner, S. Han,Y. L. Han, X. Q. Hao, F. A. Harris, K. L. He,Z. Y. He,T. Held,Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu

Physics Letters B（2015）

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摘要

We study D-s(+) decays to final states involving the eta' with a 482 pb(-1) data sample collected at root s = 4.009 GeV with the BESIII detector at the BEPCII collider. We measure the branching fractions B(D-s(+) -> eta'X) = (8.8 +/- 1.8 +/- 0.5)% and B(D-s(+) > eta'rho(+)) = (5.8 +/- 1.4 +/- 0.4)% where the first uncertainty is statistical and the second is systematic. In addition, we estimate an upper limit on the non-resonant branching ratio B(D-s(+) -> eta'pi(+)pi(0)) eta'rho(+)). (C) 2015 The Authors. Published by Elsevier B.V.

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关键词

BESIII,Ds,Branching fractions

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