Measurement of the branching fraction of D{sub s} inclusive semileptonic decay D{sub s}{sup +}{r_arrow}e{sup +}X

Journal Article · Wed Oct 01 00:00:00 EDT 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.56.3779· OSTI ID:628708

Bai, J Z; Bian, J G; Chai, Z W; Chen, G P; Chen, J C; Chen, S M; Chen, Y; Chen, Y B; Chen, Y Q; Cheng, B S; Cui, X Z; Ding, H L; Du, Z Z; Fan, X L; Fang, J; Gao, C S; Gao, M L; Gao, S Q; Gu, J H; Gu, S D ; Gu, W X; Gu, Y F; Guo, Y N; Han, S W; Han, Y; He, J; He, J T; Hu, G Y; Hu, J L; Hu, Q H; Hu, T; Hu, X Q; Huang, X P; Huang, Y Z; Jiang, C H; Jin, S; Jin, Y; Kang, S H; Ke, Z J; Lai, Y F; Lan, H B; Lang, P F; Li, J; Li, P Q; Li, R B; Li, W; Li, W D; Li, W G; Li, X H; Li, X N; Lin, S Z; Lu, F; Liu, H M; Liu, J; Liu, J H; Liu, Q; Liu, R G; Liu, Y; Liu, Z A; Lu, J G; Lu, J Y; Luo, S Q; Luo, Y; Ma, A M; Ma, E C; Ma, J M; Mao, H S; Mao, Z P; Meng, X C; Ni, H L; Nie, J; Qi, N D; Qiu, J F; Qu, Y H; Que, Y K; Rong, G; Shao, Y Y; Shen, B W; Shen, D L; Shen, H; Shen, X Y; Sheng, H Y; Shi, H Z; Song, X F; Sun, F; Sun, H S; Sun, S J; Tan, Y P; Tang, S Q; Tong, G L; Wang, F; Wang, J F; Wang, L S; Wang, L Z; Wang, M; Wang, M; Wang, P; Wang, P L; Wang, S M; Wang, T J; Wang, Y Y; Wei, C L; Wu, Y G; Xi, D M; Xia, X M; Xie, P P; Xiong, W J; Xu, D Z; Xu, G F; Xu, R S; Xu, Z Q; Xue, S T; Yan, J; Yan, W G; Yang, C M; Yang, C Y; Yang, W; Yang, X F; Ye, M H; Ye, S Z; Yi, K; Yu, C S; Yu, C X; Yu, Z Q; Yu, Z T; Yuan, C Z; Zhang, B Y; Zhang, C C; Zhang, D H; Zhang, D; Zhang, H L; Zhang, J; Zhang, J W; Zhang, L S; Zhang, L; Zhang, Q J; Zhang, S Q; Zhang, X Y; Zhang, Y; Zhang, Y Y; Zhao, D X; Zhao, J W; Zhao, M; Zhao, W R; Zheng, J P; Zheng, L S; Zheng, Z P; Zhou, G P; Zhou, H S; Zhou, L; Zhou, Y H; Zhu, Q M; Zhu, Y C; Zhu, Y S; Zhuang, B A ^[1]; Bardon, O; Cowan, R F; Fero, M ^[2]; Blum, I; Gratton, P; Izen, J M; Kim, B K; Lou, X C; Lowery, B; Standifird, J; others, and

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1. Institute of High Energy Physics, Beijing 100039, People`s Republic of (China)
2. Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)

The absolute inclusive semileptonic branching fraction of the D{sub s} meson has been measured based on 22.3 pb{sup {minus}1} of e{sup +}e{sup {minus}} collision data collected with the Beijing Spectrometer at {radical} (s) =4.03GeV. At this energy, the D{sub s} are produced in pairs: e{sup +}e{sup {minus}}{r_arrow}D{sub s}{sup +}D{sub s}{sup {minus}}. We reconstructed 171{plus_minus}21{plus_minus}15 D{sub s} events in five hadronic decay modes. In the recoil system of these events, several D{sub s} inclusive semileptonic decays were observed and the branching fraction is estimated to be B(D{sub s}{sup +}{r_arrow}e{sup +}X)=(7.7{sub {minus}4.3{minus}2.1}{sup +5.7+2.4}){percent}. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 628708
• Journal Information: Physical Review, D, Vol. 56, Issue 7; Other Information: PBD: Oct 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
D S MESONS
SEMILEPTONIC DECAY
D MESONS
INCLUSIVE INTERACTIONS
BRANCHING RATIO
ELECTRON-POSITRON INTERACTIONS
PAIR PRODUCTION