A Measurement of the branching fraction of D(s) inclusive semileptonic decay D(s)+ ---> e+ X J.Z. Bai , O Bardon , JG Bian , I Blum , A Breakstone , T Burnett , ZW Chai , GP Chen , HF Chen , J Chen , JC Chen , SM Chen , Y CHen , YB Chen , YQ Chen , BS Cheng , RF Cowan , XZ Cui , HL Ding , ZZ Du , W Dunwoodie , XL Fan , J Fang , M Fero , CS Gao , ML Gao , SQ Gao , P Gratton , JH Gu , SD Gu , WX Gu , YF Gu , YN Guo , SW Han , Y Han , FA Harris , J He , JT He , M He , DG Hitlin , GY Hu , JL Hu , QH Hu , T Hu , XQ Hu , XP Huang , YZ Huang , JM Izen , QP Jia , CH Jiang , S Jin , Y Jin , L Jones , SH Kang , ZJ Ke , MH Kelsey , BK Kim , D Kong , YF Lai , HB Lan , PF Lang , A Lankford , J Li , PQ Li , Q Li , RB Li , W Li , WD Li , WG Li , XH Li , XN Li , SZ Lin , F Lu , HM Liu , J Liu , JH Liu , Q Liu , RG Liu , Y Liu , ZA Liu , XC Lou , B Lowery , JG Lu , JY Lu , SQ Luo , Y Luo , AM Ma , EC Ma , JM Ma , HS Mao , ZP Mao , R Malchow , M Mandelkern , XC Meng , HL Ni , J Nie , SL Olsen , J Oyang , D Paluselli , LJ Pan , J Panetta , F Porter , E Prabhakar , ND Qi , JF Qiu , YH Qu , YK Que , G Rong , M Schernau , B Schmid , J Schultz , YY Shao , BW Shen , DL Shen , H Shen , XY Shen , HY Sheng , HZ Shi , XR Shi , E Soderstrom , XF Song , J Standifird , D Stoker , F Sun , HS Sun , SJ Sun , J Synodinos , YP Tan , SQ Tang , W Toki , GL Tong , F Wang , JF Wang , LS Wang , LZ Wang , M Wang , Meng Wang , P Wang , PL Wang , SMM Wang , TJ Wang , YY Wang , M Weaver , CL Wei , WJ Wisniewski , YG Wu , DM Xi , XM Xia , PP Xie , WJ Xiong , DZ Xu , GF Xu , RS Xu , ZQ Xu , ST Xue , J Yan , WG Yan , CM Yang , CY Yang , H Yang , J Yang , W Yang , XF Yang , MH Ye , SW Ye , SZ Ye , K Yi , K Young , CS Yu , CX Yu , ZQ Yu , ZT Yu , CZ Yuan , BY Zhang , CC Zhang , DH Zhang , HL Zhang , J Zhang , JW Zhang , LS Zhang , L Zhang , QJ Zhang , SQ Zhang , XY Zhang , Y Zhang , YY Zhang , DX Zhao , HW Zhao , JW Zhao , M Zhao , WR Zhao , JP Zheng , LS Zheng , ZP Zheng , GP Zhou , HS Zhou , L Zhou , YH Zhou , QM Zhu , YC Zhu , YS Zhu , BA Zhuang Physical Review（1997）
摘要
The absolute inclusive semileptonic branching fraction of the D s meson has been measured based on 22.3 pb− 1 of e+ e− collision data collected with the Beijing Spectrometer at s= 4.03 GeV. At this energy, the D s are produced in pairs: e+ e−→ D s+ D s−. We reconstructed 171±21±15 D s events in five hadronic decay modes. In the recoil system of these events, several D s inclusive semileptonic decays were observed and the branching fraction is estimated to be B (D s+→ e+ X)=(7.7− 4.3− 2.1+ 5.7+ 2.4)%.
更多 查看译文
AI 理解论文
溯源树
样例
