Measurement of the B{sup -} and {ovr B}{sup 0} meson lifetimes using semileptonic decays.
The lifetimes of the B{sup -} and B{sup 0} mesons are measured using the partially reconstructed semileptonic decays B{sup -}{yields}Dl{sup -}{ovr v} X, where D is either a D{sup 0} or D*{sup +} meson. The data were collected by the CDF detector at the Fermilab Tevatron collider during 1992-1995 and correspond to about 110 pb{sup -1} of p{ovr p} collisions at sqrt[s]=1.8 TeV. We measure decay lengths and extract the lifetimes to be {tau}(B{sup -})=1.637{+-}0.058{sub -0.043}{sup +0.045} ps and {tau}(B{sup 0})=1.474{+-}0.039{sub -0.051}{sup +0.052} ps, and the ratio of the lifetimes to be {tau}(B{sup -})/{tau}(B{sup 0})=1.110{+-}0.056{sub -0.030}{sup +0.033}, where the first uncertainties are statistical and the second are systematic.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 942529
- Report Number(s):
- ANL-HEP-PR-99-11
- Journal Information:
- Phys. Rev. D, Journal Name: Phys. Rev. D Journal Issue: 9 ; Nov. 1, 1998 Vol. 58; ISSN 1550-7998
- Country of Publication:
- United States
- Language:
- ENGLISH
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