First Measurement of the Form Factors in D_{s}^{+}-->K^{0}e^{+}nu_{e} and D_{s}^{+}-->K^{*0}e^{+}nu_{e} Decays.

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成果类型：

期刊论文

作者：

Ablikim, M.;Achasov, M. N.;Ahmed, S.;Albrecht, M.;Alekseev, M.;...

通讯作者：

Li, Lei

作者机构：

[Wang, X. F.; Hu, T.; Sun, Z. J.; Guo, R. P.; Ning, Z.; Wen, S. P.; Shi, X.; Ma, M. M.; Min, J.; Zhao, Ling; Zhu, Z. A.; Xu, G. F.; Wang, K.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Rong, G.; Zhou, Q.; Li, H. J.; Wang, Y. F.; Sosio, S.; Wang, L. L.; Jin, D. P.; Xiu, Q. L.; Lu, Y.; Ouyang, Q.; Kurth, M.; Sun, Y. K.; Ji, X. B.; Yu, C. X.; Qian, S.; Wang, P.; Dong, M. Y.; Fang, S. S.; Chang, J. F.; Wang, Zongyuan; Liu, Z. A.; Ke, B. C.; Sun, S. S.; Fu, C. D.; Lou, X. C.; Wang, Z. G.; Zhang, B. X.; Cao, G. F.; Xiao, Y. J.; Xu, J. J.; Wu, L. H.; Zhao, Y. B.; Gao, Q.; Zheng, J. P.; Zhang, B. Y.; Jiang, X. S.; Kiuchi, R.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Yang, S. L.; Zhao, G.; Wu, L. J.; Yang, Yifan; Yuan, Y.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhu, A. N.; Li, H. B.; Zhuang, J.; Li, J. C.; Guo, A. Q.; Zhang, Yang; Liao, L. Z.; Zhang, J. Y.; Wang, L. S.; Yin, J. H.; Liu, Huanhuan; Song, W. M.; Zhang, J. Z.; He, K. L.; Chen, G.; Xiong, X. A.; Chen, J. C.; Ablikim, M.; Liu, C. X.; Chang, W. L.; Zhu, K.; You, Z. Y.; Zhao, J. Z.; Mao, Z. P.; Zhao, Q.; Lu, J. G.; Chen, Y. B.; Niu, S. L.; Wang, Z.; Liu, Fang; Zhao, J. Y.; Dong, J.; Zhang, C. C.; Zhang, D. H.; Tang, G. Y.; Zhang, H. Y.; Chen, M. L.; Sun, L.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Zhu, K. J.; Liu, H. M.; Ma, H. L.; Ye, M.; Xie, Y. G.; Sheng, H. Y.; Spataro, S.; Feldbauer, F.; Zou, B. S.; Chen, H. S.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Zhao, T. C.; Cai, X.; Xu, L.; Zhang, Y. H.; Zhu, S.; An, F. F.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Li, W. G.; Niu, X. Y.; Mo, X. H.; Zhou, L.; Fang, J.; Yuncu, A.; Shen, X. Y.; Zhu, Y. S.; Li, X. N.; Sun, Z. T.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Wang, P. L.; Zhang, J.; Duan, P. F.; Hu, Y.; Wang, B.; Wang, Meng; Li, F.; Zhang, K.; Zhou, X. Y.; Tang, X.; Yang, H. X.; Qin, Z. H.; Xiao, D.; Li, G.; Ping, R. G.; Qiu, J. F.; Zhao, J. W.; Dai, H. L.; Li, W. D.] Inst High Energy Phys, Beijing 100049, Peoples R China.

[Yan, W. C.; Qi, H. R.; Shen, C. P.; Qi, T. Y.] Beihang Univ, Beijing 100191, Peoples R China.

[Li, Lei] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China.

[Fritsch, M.; Heinsius, F. H.; Zhang, J. Q.; Weber, T.; Mustafa, A.; Kuessner, M.; Pitka, A.; Leiber, S.; Richter, M.; Pelizaeus, M.; Kopf, B.; Keshk, I. K.; Qin, X. S.; Albrecht, M.; Wiedner, U.; Kuemmel, M.; Held, T.] Bochum Ruhr Univ, D-44780 Bochum, Germany.

[Briere, R. A.; Bennett, J. V.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.

通讯机构：

[Li, Lei] B

Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China.

语种：

英文

期刊：

PHYSICAL REVIEW LETTERS

ISSN：

0031-9007

年：

2019

卷：

122

期：

页码：

061801

DOI：

10.1103/PhysRevLett.122.061801

基金类别：

The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11335008, No. 11425524, No. 11505010, No. 11625523, No. 11635010, No. 11735014, and No. 11775027; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1532257, No. U1532258, and No. U1732263; CAS Key Research Program of Frontier Sciences under Contracts No. QYZDJ-SSW-SLH003 and No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; Tsung-Dao Lee Institute and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contracts No. Collaborative Research Center CRC 1044 and No. FOR 2359; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen under Contract No. 530-4CDP03; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; The Swedish Research Council; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374, No. DE-SC-0010118, No. DE-SC-0010504, and No. DE-SC-0012069; University of Groningen and the Helmholtzzentrum fuer Schwerionenforschung GmbH, Darmstadt. This paper is also supported by the Beijing municipal government under Contracts No. KM201610017009, No. 2015000020124G064, and No. CIT&TCD201704047, and by the Royal Society under the Newton International Fellowship Contract No. NF170002.

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摘要：

We report on new measurements of Cabibbo-suppressed semileptonic D_{s}^{+} decays using 3.19 fb^{-1} of e^{+}e^{-} annihilation data sample collected at a center-of-mass energy of 4.178 GeV with the BESIII detector at the BEPCII collider. Our results include branching fractions B(D_{s}^{+}-->K^{0}e^{+}nu_{e})=[3.25+/-0.38(stat)+/-0.16(syst)]x10^{-3} and B(D_{s}^{+}-->K^{*0}e^{+}nu_{e})=[2.37+/-0.26(stat)+/-0.20(syst)]x10^{-3}, which are much improved relative to previous measurements, and the first measurements of the hadronic form-factor parameters for these decays. For D_{s}^{+}-->K^{0}e^{+}...

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First Measurement of the Form Factors in D_{s}^{+}-->K^{0}e^{+}nu_{e} and D_{s}^{+}-->K^{*0}e^{+}nu_{e} Decays.

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