Measurement of the CP-violation parameter sin(2{beta}) in B{sup 0}{sub d}/{ovr B}{sup 0}{sub d} {yields} J/{psi}K{sup 0}{sub s} decays.
Journal Article
·
· Phys. Rev. Lett.
We present a measurement of the time-dependent asymmetry in the rate for {ovr B}{sub d}{sup 0} versus B{sub d}{sup 0} decays to J/{psi}K{sub s}{sup 0}. A nonzero asymmetry would be an indication of CP violation, and within the standard model this may be used to measure the CP-violation parameter sin(2{beta}). A total of 198{+-}17 B{sub d}{sup 0}/{ovr B}{sub d}{sup 0} decays were observed in p{ovr p} collisions at sqrt[s] = 1.8 TeV by the CDF detector at the Fermilab Tevatron. B{sub d}{sup 0} and {ovr B}{sub d}{sup 0} are distinguished by a technique based on charge correlations from hadronization of the b quark. Our analysis results in sin(2{beta}) = 1.8{+-}1.1(stat){+-}0.3(syst).
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC; NSF; FOR; OUS
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 942514
- Report Number(s):
- ANL-HEP-PR-99-20
- Journal Information:
- Phys. Rev. Lett., Journal Name: Phys. Rev. Lett. Journal Issue: 25 ; Dec. 1998 Vol. 81; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- ENGLISH
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