Absolute Measurement of Important Branching Fractions of the Ds Meson

  • Absolute measurement of branching fractions of purely leptonic decay, semi-leptonic decay and φπ+ decay of the Ds meson at a c.m. energy of 4.03 GeV were completed from the BES experiment at the BEPC electron-positron collider. The method by using combined confidence level for pion and kaon separation, the Ds single and double tagging technology, and the maximum likelihood functions in the estimate of the Ds branching fractions are described in details. Discussion and comments on these physics results are made. Prospect for improved measurement of Ds physics in future is also given.
  • 加载中
  • [1] BES Collab.Nucl.Instr.Meth.,1994,A334:319—334[2] ZHANG ZhaoXi.The Status of Ds Physics and Its Experiements.BES Internal Report,1990(张肇西.Ds物理的实验研究与现状.BES内部报告,1990);. . ZHANG ZhaoXi,ZHANG ChangChun.Proposalon the Ds Physics at the BES.BES Internal Report,1990(张肇西,张长春,BES开展Ds物理研究的建议.BES内部报告,1990);. . Fero M,Toki W.Ds Physics at BES/BEPC.BES Internal Report,Jan.1991[3] LAN HuiBin.Talk Given in the International Accelerator Conf.at DESY.1993(兰慧彬.在DESY国际加速器会议上的报告,1993)[4] TAN YiPing.Study on the Purely Leptonic Decays and the Semi–Leptonic Decays of Ds Mesons.Ph.D.Thesis,Institute of High Energy Physics,Chinese Academy of Sciences,Apr.1995(谭益平.Ds介子的纯轻子和半轻子衰变研究.博士论文,中国科学院高能物理研究所,1995)[5] Porter F.Nucl.Instr.Meth.,1996,A368:793;Kelsey M.Ph.D.Thesis,Calif.of Inst.of Technology,May1996[6] GU JianHui.Measurement of the Ds Purely Leptonic Decays and Its Decay Constant,f(Ds).Ph.D.Thesis,Institute of High Energy Physics,Chinese Academy of Sciences,Sep.1994. . (顾建辉.Ds纯轻子衰变的研究和f(Ds)的测量.博士论文,中国科学院高能物理研究所,1994). . LI WeiGuo.Corrections on the TOF and dE/dx Systematic Off sets.The BES Internal Report,1994(李卫国.TOF和dE/dx系统偏置的修正.BES内部报告,1994);. . BES Collab.High Energy Physics and Nuclear Physics(in Chinese),1996,20:193(BES合作组.高能物理和核物理,1996,20:193)[7] Wasserbach S.Telesis,Mark Ⅲ Collaboration,Stanford,California,1988;Lan Huibin,Telesis,BES Collaboration,IHEP,Beijing,China,1993,Adapted from Mark Ⅲ version[8] BES Collab BAIJZ et al.Phys.Rev.Lett.,1995,74:4599[9] Particle Data Group.Phys.Rev.,1996,D54:1;Prtical Data Group.European Physical Journal,1998,C3:1[10] Buttlr F et al.Phys.Lett.,1994,B324:255[11] Particle Data Group.Phys.Rev.,1994,D50:1173[12] BES Collab,BAIJZ et al.Phys.Rev.,1995,D52:3781[13] GU JianHui.Comparison between Two Methods of Maximum Like lihood Function(Monte Carlo Study).Talk Given at the BES Annual Meeting,1996,Zhang Jiajie(顾建辉.似然函数极大计算的两种方法比较(Monte Carlo研究).BES年会上的报告,1996,张家界[14] BES Collab,BAIJZ et al.Phys.Rev.,1997,D56:3779[15] EMC Collab.Nulc.Phys.,1983,B213:31[16] MARK–Ⅲ Collab.Phys.Rev.Lett.,1988,60:1375[17] WA75 Collab,Aoki S et al.Prog.Theor.Phys.,1993,89:131[18] CLEO Collab.Phys.Rev,1994,D49:5690[19] MARK–Ⅲ Collab.Phys.Rev.Lett.,1990,64:169[20] CLEO Collab.Phys.Lett.,1996,B378:364[21] MARK–Ⅲ Collab.Phys.Rev.Lett.,1990,65:686[22] E653 Collab,Kodama K et al.Phys.Lett.,1996,B382:299[23] L3 Collab,Acciarri M et al.Phys.Lett.,1997,B396:327[24] DELPHI Collab,Parodi F et al.in HEP’97 Conference Jerusalem,1997,455[25] CLEO Collab,Chada M et al.Phys.Rev.,1998,D58:32002—1[26] BES Collab,BAIJZ et al.Phys.Rev.,1998,D57:28
  • 加载中

Get Citation
ZHANG ChangChun, LI WeiGuo, MAO HuiShun, GU JianHui, LI XiaoNan and RONG Gang. Absolute Measurement of Important Branching Fractions of the Ds Meson[J]. Chinese Physics C, 2000, 24(6): 593-608.
ZHANG ChangChun, LI WeiGuo, MAO HuiShun, GU JianHui, LI XiaoNan and RONG Gang. Absolute Measurement of Important Branching Fractions of the Ds Meson[J]. Chinese Physics C, 2000, 24(6): 593-608. shu
Milestone
Received: 1999-08-13
Revised: 1900-01-01
Article Metric

Article Views(2635)
PDF Downloads(603)
Cited by(0)
Policy on re-use
To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

Absolute Measurement of Important Branching Fractions of the Ds Meson

    Corresponding author: ZHANG ChangChun,
  • Institute of High Energy Physics, The Chinese Academy of Science, Beijing, 100039, China

Abstract: Absolute measurement of branching fractions of purely leptonic decay, semi-leptonic decay and φπ+ decay of the Ds meson at a c.m. energy of 4.03 GeV were completed from the BES experiment at the BEPC electron-positron collider. The method by using combined confidence level for pion and kaon separation, the Ds single and double tagging technology, and the maximum likelihood functions in the estimate of the Ds branching fractions are described in details. Discussion and comments on these physics results are made. Prospect for improved measurement of Ds physics in future is also given.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return