Measurement of the decays B --> phi K and B --> K*

Journal Article · Tue May 01 00:00:00 EDT 2001 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.87.151801· OSTI ID:825112

Aubert, B ^[1]

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1. LBNL Library

We have observed the decays B {yields} phi K and phi K* in a sample of over 45 million B mesons collected with the BABAR detector at the PEP-II collider. The measured branching fractions are BF(B{sup +} {yields} phi K{sup +}) = (7.7{sub -1.4}{sup +1.6}+/- 0.8) x 10{sup -6}, BF(B{sup 0} {yields} phi K{sup 0}) =(8.1{sub -2.5}{sup +3.1}+/- 0.8) x 10{sup -6}, BF(B{sup +} {yields} phi K*{sup +}) = (9.7{sub -3.4}{sup +4.2}+/- 1.7) x 10{sup -6}, and BF(B{sup 0} {yields} phi K*{sup 0}) = (8.6{sub -2.4}{sup +2.8}+/- 1.1) x 10{sup -6}. We also report the upper limit BF(B{sup +} {yields} phi pi{sup +}) < 1.4 x 10{sup -6} (90 percent CL).

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 825112
• Report Number(s): LBNL--48090; SLAC-PUB-8823 and BABAR-PUB-01-11
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 15 Vol. 87; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
BRANCHING RATIO
DATA
KAONS
PARTICLE DECAY