D_{s}^{+}→η^{(')}e^{+}ν_{e}衰变动力学的测量
Measurement of the Dynamics of the Decays D_{s}^{+}→η^{(')}e^{+}ν_{e}.
作者信息
Ablikim M, Achasov M N, Ahmed S, Albrecht M, Alekseev M, Amoroso A, An F F, An Q, Bai J Z, Bai Y, Bakina O, Baldini Ferroli R, Ban Y, Begzsuren K, Bennett D W, Bennett J V, Berger N, Bertani M, Bettoni D, Bianchi F, Boger E, Boyko I, Briere R A, Cai H, Cai X, Calcaterra A, Cao G F, Cetin S A, Chai J, Chang J F, Chelkov G, Chen G, Chen H S, Chen J C, Chen M L, Chen P L, Chen S J, Chen X R, Chen Y B, Cheng W, Chu X K, Cibinetto G, Cossio F, Dai H L, Dai J P, Dbeyssi A, Dedovich D, Deng Z Y, Denig A, Denysenko I, Destefanis M, De Mori F, Ding Y, Dong C, Dong J, Dong L Y, Dong M Y, Dou Z L, Du S X, Duan P F, Fang J, Fang S S, Fang Y, Farinelli R, Fava L, Fegan S, Feldbauer F, Felici G, Feng C Q, Fioravanti E, Fritsch M, Fu C D, Gao Q, Gao X L, Gao Y, Gao Y G, Gao Z, Garillon B, Garzia I, Gilman A, Goetzen K, Gong L, Gong W X, Gradl W, Greco M, Gu L M, Gu M H, Gu Y T, Guo A Q, Guo L B, Guo R P, Guo Y P, Guskov A, Haddadi Z, Han S, Hao X Q, Harris F A, He K L, He X Q, Heinsius F H, Held T, Heng Y K, Hou Z L, Hu H M, Hu J F, Hu T, Hu Y, Huang G S, Huang J S, Huang X T, Huang X Z, Huang Z L, Hussain T, Ikegami Andersson W, Irshad M, Ji Q, Ji Q P, Ji X B, Ji X L, Jiang X S, Jiang X Y, Jiao J B, Jiao Z, Jin D P, Jin S, Jin Y, Johansson T, Julin A, Kalantar-Nayestanaki N, Kang X S, Kavatsyuk M, Ke B C, Keshk I K, Khan T, Khoukaz A, Kiese P, Kiuchi R, Kliemt R, Koch L, Kolcu O B, Kopf B, Kornicer M, Kuemmel M, Kuessner M, Kupsc A, Kurth M, Kühn W, Lange J S, Larin P, Lavezzi L, Leiber S, Leithoff H, Li C, Li Cheng, Li D M, Li F, Li F Y, Li G, Li H B, Li H J, Li J C, Li J W, Li K J, Li Kang, Li Ke, Li Lei, Li P L, Li P R, Li Q Y, Li T, Li W D, Li W G, Li X L, Li X N, Li X Q, Li Z B, Liang H, Liang Y F, Liang Y T, Liao G R, Liao L Z, Libby J, Lin C X, Lin D X, Liu B, Liu B J, Liu C X, Liu D, Liu D Y, Liu F H, Liu Fang, Liu Feng, Liu H B, Liu H L, Liu H M, Liu Huanhuan, Liu Huihui, Liu J B, Liu J Y, Liu K Y, Liu Ke, Liu L D, Liu Q, Liu S B, Liu X, Liu Y B, Liu Z A, Liu Zhiqing, Long Y F, Lou X C, Lu H J, Lu J G, Lu Y, Lu Y P, Luo C L, Luo M X, Luo T, Luo X L, Lusso S, Lyu X R, Ma 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, Maas F E, Maggiora M, Maldaner S, Malik Q A, Mangoni A, Mao Y J, Mao Z P, Marcello S, Meng Z X, Messchendorp J G, Mezzadri G, Min J, Min T J, Mitchell R E, Mo X H, Mo Y J, Morales Morales C, Muchnoi N Yu, Muramatsu H, Mustafa A, Nakhoul S, Nefedov Y, Nerling F, Nikolaev I B, Ning Z, Nisar S, Niu S L, Niu X Y, Olsen S L, Ouyang Q, Pacetti S, Pan Y, Papenbrock M, Patteri P, Pelizaeus M, Pellegrino J, Peng H P, Peng Z Y, Peters K, Pettersson J, Ping J L, Ping R G, Pitka A, Poling R, Prasad V, Qi H R, Qi M, Qi T Y, Qian S, Qiao C F, Qin N, Qin X S, Qin Z H, Qiu J F, Qu S Q, Rashid K H, Redmer C F, Richter M, Ripka M, Rivetti A, Rolo M, Rong G, Rosner Ch, Sarantsev A, Savrié M, Schoenning K, Shan W, Shan X Y, Shao M, Shen C P, Shen P X, Shen X Y, Sheng H Y, Shi X, Song J J, Song W M, Song X Y, Sosio S, Sowa C, Spataro S, Sun G X, Sun J F, Sun L, Sun S S, Sun X H, Sun Y J, Sun Y K, Sun Y Z, Sun Z J, Sun Z T, Tan Y T, Tang C J, Tang G Y, Tang X, Tiemens M, Tsednee B, Uman I, Wang B, Wang B L, Wang C W, Wang D, Wang D Y, Wang Dan, Wang K, Wang L L, Wang L S, Wang M, Wang Meng, Wang P, Wang P L, Wang W P, Wang X F, Wang Y, Wang Y F, Wang Z, Wang Z G, Wang Z Y, Wang Zongyuan, Weber T, Wei D H, Weidenkaff P, Wen S P, Wiedner U, Wolke M, Wu L H, Wu L J, Wu Z, Xia L, Xia X, Xia Y, Xiao D, Xiao Y J, Xiao Z J, Xie Y G, Xie Y H, Xiong X A, Xiu Q L, Xu G F, Xu J J, Xu L, Xu Q J, Xu X P, Yan F, Yan L, Yan W B, Yan W C, Yan Y H, Yang H J, Yang H X, Yang L, Yang R X, Yang Y H, Yang Y X, Yang Yifan, Yang Z Q, Ye M, Ye M H, Yin J H, You Z Y, Yu B X, Yu C X, Yu J S, Yu J S, Yuan C Z, Yuan Y, Yuncu A, Zafar A A, Zeng Y, Zhang B X, Zhang B Y, Zhang C C, Zhang D H, Zhang H H, Zhang H Y, Zhang J, Zhang J L, Zhang J Q, Zhang J W, Zhang J Y, Zhang J Z, Zhang K, Zhang L, Zhang S F, Zhang T J, Zhang X Y, Zhang Y, Zhang Y H, Zhang Y T, Zhang Yang, Zhang Yao, Zhang Yu, Zhang Z H, Zhang Z P, Zhang Z Y, Zhao G, Zhao J W, Zhao J Y, Zhao J Z, Zhao Lei, Zhao Ling, Zhao M G, Zhao Q, Zhao S J, Zhao T C, Zhao Y B, Zhao Z G, Zhemchugov A, Zheng B, Zheng J P, Zheng W J, Zheng Y H, Zhong B, Zhou L, Zhou Q, Zhou X, Zhou X K, Zhou X R, Zhou X Y, Zhou Xiaoyu, Zhou Xu, Zhu A N, Zhu J, Zhu J, Zhu K, Zhu K J, Zhu S, Zhu S H, Zhu X L, Zhu Y C, Zhu Y S, Zhu Z A, Zhuang J, Zou B S, Zou J H
机构信息
Institute of High Energy Physics, Beijing 100049, People's Republic of China.
G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia.
出版信息
Phys Rev Lett. 2019 Mar 29;122(12):121801. doi: 10.1103/PhysRevLett.122.121801.
Using e^{+}e^{-} annihilation data corresponding to an integrated luminosity of 3.19 fb^{-1} collected at a center-of-mass energy of 4.178 GeV with the BESIII detector, we measure the absolute branching fractions B_{D_{s}^{+}→ηe^{+}ν_{e}}=(2.323±0.063_{stat}±0.063_{syst})% and B_{D_{s}^{+}→η^{'}e^{+}ν_{e}}=(0.824±0.073_{stat}±0.027_{syst})% via a tagged analysis technique, where one D_{s} is fully reconstructed in a hadronic mode. Combining these measurements with previous BESIII measurements of B_{D^{+}→η^{(')}e^{+}ν_{e}}, the η-η^{'} mixing angle in the quark flavor basis is determined to be ϕ_{P}=(40.1±2.1_{stat}±0.7_{syst})°. From the first measurements of the dynamics of D_{s}^{+}→η^{(')}e^{+}ν_{e} decays, the products of the hadronic form factors f_{+}^{η^{(')}}(0) and the Cabibbo-Kobayashi-Maskawa matrix element |V_{cs}| are determined with different form factor parametrizations. For the two-parameter series expansion, the results are f_{+}^{η}(0)|V_{cs}|=0.4455±0.0053_{stat}±0.0044_{syst} and f_{+}^{η^{'}}(0)|V_{cs}|=0.477±0.049_{stat}±0.011_{syst}.
利用北京谱仪III（BESIII）探测器在质心能量为4.178 GeV时收集的积分亮度为3.19 fb⁻¹的正负电子湮灭数据，我们通过标记分析技术测量了绝对分支比(B_{D_{s}^{+}→ηe^{+}ν_{e}}=(2.323±0.063_{统计}±0.063_{系统})%)和(B_{D_{s}^{+}→η^{'}e^{+}ν_{e}}=(0.
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