Measurement of the B{sup +} and B{sup 0} lifetimes using topological vertexing at SLD
The lifetimes of B{sup +} and B{sup 0} mesons have been measured using the entire sample of 550,000 hadronic Z{sup 0} decays collected by the SLD experiment at the SLC between 1993 and 1998. In this paper, the authors describe the inclusive analysis of the 350,000 hadronic Z{sup 0} decays collected in 1997-98 with the upgraded SLD vertex detector. In this data period, a high statistics sample of 30903 (20731) charged (neutral) vertices with good charge purity is obtained. The charge purity is enhanced by using the vertex mass, the SLC electron beam polarization (73% for 1997-8) and an opposite hemisphere jet charge technique. Combining the results of this data sample with the results from the earlier data yield the following preliminary values: {tau}{sub B{sup +}} = 1.623 {+-} 0.020(stat){+-} 0.034(syst)ps, {tau}{sub B{sup 0}} = 1.565{+-}0.021(stat){+-}0.043(syst)ps, {tau}{sub B{sup +}}/{tau}{sub B{sup 0}} = 1.037{+-}0.0250/0.024(stat){+-}0.024(syst).
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 753225
- Report Number(s):
- SLAC-PUB-8206; TRN: US0001851
- Resource Relation:
- Other Information: PBD: 17 Dec 1999
- Country of Publication:
- United States
- Language:
- English
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