Measurements of the Absolute Branching Fractions for D-S(+) -> Eta E(+)Nu(E) and D-S(+) -> Eta ' E(+)Nu(E)

M. Ablikim,M. N. Achasov,S. Ahmed,X. C. Ai,O. Albayrak,M. Albrecht,D. J. Ambrose,A. Amoroso,F. F. An,Q. An,J. Z. Bai,O. Bakina,R. Baldini Ferroli,Y. Ban,D. W. Bennett,J. V. Bennett,N. Berger,M. Bertani,D. Bettoni,J. M. Bian,F. Bianchi,E. Boger,I. Boyko,R. A. Briere,H. Cai,X. Cai,O. Cakir,A. Calcaterra,G. F. Cao,S. A. Cetin,J. Chai,J. F. Chang,G. Chelkov,G. Chen,H. S. Chen,J. C. Chen,M. L. Chen,P. L. Chen,S. J. Chen,X. Chen,X. R. Chen,Y. B. Chen,H. P. Cheng,X. K. Chu,G. Cibinetto,H. L. Dai,J. P. Dai,A. Dbeyssi,D. Dedovich,Z. Y. Deng,A. Denig,I. Denysenko,M. Destefanis,F. De Mori,Y. Ding,C. Dong,J. Dong, L. Y. Dong,M. Y. Dong,O. Dorjkhaidav,Z. L. Dou,S. X. Du,P. F. Duan,J. Fang,S. S. Fang,X. Fang,Y. Fang,R. Farinelli,L. Fava,S. Fegan,F. Feldbauer,G. Felici,C. Q. Feng,E. Fioravanti,M. Fritsch,C. D. Fu,Q. Gao,X. L. Gao,Y. Gao,Z. Gao,I. Garzia,K. Goetzen,L. Gong,W. X. Gong,W. Gradl,M. Greco,M. H. Gu,Y. T. Gu, Y. H. Guan,A. Q. Guo,L. B. Guo,R. P. Guo,Y. Guo,Y. P. Guo,Z. Haddadi,A. Hafner,S. Han,X. Q. Hao,F. A. Harris,K. L. He,X. Q. He,F. H. Heinsius,T. Held,Y. K. Heng,T. Holtmann,Z. L. Hou,C. Hu,H. M. Hu,J. F. Hu,T. Hu,Y. Hu,G. S. Huang,J. S. Huang,X. T. Huang,X. Z. Huang,Y. Huang,Z. L. Huang,T. Hussain,W. Ikegami Andersson,Q. Ji,Q. P. Ji,X. B. Ji,X. L. Ji,L. W. Jiang,X. S. Jiang,X. Y. Jiang,J. B. Jiao,Z. Jiao,D. P. Jin,S. Jin,T. Johansson,A. Julin,N. Kalantar-Nayestanaki,X. L. Kang,X. S. Kang,M. Kavatsyuk,B. C. Ke,P. Kiese, R. Kliemt,B. Kloss,O. B. Kolcu,B. Kopf, M. Kornicer,A. Kupsc,W. Kuhn,J. S. Lange,M. Lara,P. Larin,H. Leithoff,C. Leng,C. Li,Cheng Li,D. M. Li,F. Li,F. Y. Li,G. Li,H. B. Li,H. J. Li,J. C. Li,Jin Li,K. Li,Lei Li,P. L. Li,Q. Y. Li,T. Li,W. D. Li,W. G. Li,X. L. Li,X. N. Li,X. Q. Li,Y. B. Li,Z. B. Li,H. Liang,Y. F. Liang,Y. T. Liang,G. R. Liao,D. X. Lin,B. Liu,B. J. Liu,C. X. Liu, D. Liu,F. H. Liu,Fang Liu,Feng Liu,H. B. Liu,H. H. Liu,H. M. Liu,J. Liu,J. B. Liu,J. P. Liu,J. Y. Liu,K. Liu,K. Y. Liu,L. D. Liu,P. L. Liu,Q. Liu,S. B. Liu,X. Liu,Y. B. Liu,Y. Y. Liu,Z. A. Liu,Zhiqing Liu,H. Loehner,Y. F. Long,X. C. Lou,H. J. Lu,J. G. Lu,Y. Lu,Y. P. Lu,C. L. Luo,M. X. Luo,T. Luo,X. L. Luo,X. R. Lyu,F. C. Ma,H. L. Ma,L. L. Ma,M. M. Ma,Q. M. Ma,T. Ma,X. N. Ma,X. Y. Ma,Y. M. Ma,F. E. Maas,M. Maggiora,Q. A. Malik,Y. J. Mao,Z. P. Mao,S. Marcello,J. G. Messchendorp,G. Mezzadri,J. Min,T. J. Min,R. E. Mitchell,X. H. Mo,Y. J. Mo, Morales,N. Yu. Muchnoi,H. Muramatsu,P. Musiol,Y. Nefedov,F. Nerling,I. B. Nikolaev,Z. Ning,S. Nisar,S. L. Niu,X. Y. Niu,S. L. Olsen,Q. Ouyang,S. Pacetti,Y. Pan,P. Patteri,M. Pelizaeus,H. P. Peng,K. Peters,J. Pettersson,J. L. Ping,R. G. Ping,R. Poling,V. Prasad,H. R. Qi,M. Qi,S. Qian,C. F. Qiao,J. J. Qin,N. Qin,X. S. Qin,Z. H. Qin,J. F. Qiu,K. H. Rashid,C. F. Redmer,M. Ripka,G. Rong,Ch. Rosner,X. D. Ruan,A. Sarantsev,M. Savrie,C. Schnier,K. Schoenning,S. Schumann,W. Shan,M. Shao,C. P. Shen,P. X. Shen,X. Y. Shen,H. Y. Sheng,M. Shi,W. M. Song,X. Y. Song,S. Sosio,S. Spataro,G. X. Sun,J. F. Sun,S. S. Sun,X. H. Sun,Y. J. Sun,Y. Z. Sun,Z. J. Sun,Z. T. Sun,C. J. Tang,X. Tang,I. Tapan,E. H. Thorndike,M. Tiemens,I. Uman,G. S. Varner,B. Wang,B. L. Wang,D. Wang,D. Y. Wang,Dan Wang,K. Wang,L. L. Wang,L. S. Wang,M. Wang,P. Wang, P. L. Wang,W. Wang,W. P. Wang,X. F. Wang,Y. D. Wang,Y. F. Wang,Y. Q. Wang,Z. Wang,Z. G. Wang,Z. H. Wang,Z. Y. Wang,T. Weber,D. H. Wei,P. Weidenkaff,S. P. Wen,U. Wiedner,M. Wolke,L. H. Wu,L. J. Wu,Z. Wu,L. Xia,Y. Xia,D. Xiao,H. Xiao,Z. J. Xiao,Y. G. Xie,X. A. Xiong, Q. L. Xiu,G. F. Xu,J. J. Xu,L. Xu,Q. J. Xu,X. P. Xu,L. Yan,W. B. Yan,W. C. Yan,Y. H. Yan,H. J. Yang,H. X. Yang,L. Yang,Y. X. Yang,M. Ye,M. H. Ye,J. H. Yin,Z. Y. You,B. X. Yu,C. X. Yu,J. S. Yu,C. Z. Yuan,W. L. Yuan,Y. Yuan,A. Yuncu,A. A. Zafar,A. Zallo,Y. Zeng,Z. Zeng,B. X. Zhang,B. Y. Zhang,C. Zhang,C. C. Zhang,D. H. Zhang,H. H. Zhang,H. Y. Zhang,J. Zhang,J. J. Zhang,J. L. Zhang,J. Q. Zhang,J. W. Zhang,J. Y. Zhang,J. Z. Zhang,K. Zhang,L. Zhang,S. Q. Zhang,X. Y. Zhang,Y. Zhang,Y. H. Zhang,Y. T. Zhang,Yu Zhang,Z. H. Zhang,Z. P. Zhang,Z. Y. Zhang,G. Zhao,J. W. Zhao,J. Y. Zhao,J. Z. Zhao,Lei Zhao,Ling Zhao,M. G. Zhao,Q. Zhao,Q. W. Zhao,S. J. Zhao,T. C. Zhao,Y. B. Zhao,Z. G. Zhao,A. Zhemchugov,B. Zheng,J. P. Zheng,W. J. Zheng,Y. H. Zheng,B. Zhong,L. Zhou,X. Zhou,X. K. Zhou,X. R. Zhou,X. Y. Zhou,K. Zhu,K. J. Zhu,S. Zhu,S. H. Zhu,X. L. Zhu,Y. C. Zhu,Y. S. Zhu,Z. A. Zhu,J. Zhuang,L. Zotti,B. S. Zou,J. H. Zou

PHYSICAL REVIEW D（2016）

引用 14|浏览40

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摘要

By analyzing 482 pb(-1) of e(+)e(-) collision data collected at root s = 4.009 GeV with the BESIII detector at the BEPCII collider, we measure the absolute branching fractions for the semileptonic decays D-s(+) -> eta e(+)nu(e) and D-s(+) -> eta ' e(+)nu(e) to be B(D-s(+) -> eta e(+)nu(e)) = (2.30 +/- 0.31 +/- 0.08)% and B(D-s(+) -> eta ' e(+)nu(e)) = (0.93 +/- 0.30 +/- 0.05)%, respectively, and their ratio B(D-s(+) -> eta ' e(+)nu(e)) / B(D-s(+) -> eta ' e(+)nu(e)) = 0.40 +/- 0.14 +/- 0.02, where the first uncertainties are statistical and the second ones are systematic. The results are in good agreement with previous measurements within uncertainties; they can be used to determine the eta-eta' mixing angle and improve upon the D-s(+) semileptonic branching ratio precision.

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