Evidence for B{sub s}{sup 0}{yields}{phi}{phi} Decay and Measurements of Branching Ratio and A{sub CP} for B{sup +}{yields}{phi}K{sup +}

Journal Article · Fri Jul 15 04:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.031801· OSTI ID:20696445

Acosta, D; Cruz, A; Field, R D; Klimenko, S; Konigsberg, J; Korytov, A; Lungu, G; Mitselmakher, G; Necula, V; Pronko, A; Rossin, R; Sukhanov, A; Tsybychev, D; Wang, S M ^[1]; Adelman, J; Brubaker, E; Fedorko, W T; Furic, I; Grosso-Pilcher, C; Hoffman, K D ^[2]

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1. University of Florida, Gainesville, Florida 32611 (United States)
2. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States); and others

We present the first evidence of charmless decays of the B{sub s}{sup 0} meson, the decay B{sub s}{sup 0}{yields}{phi}{phi}, and a measurement of the branching ratio BR(B{sub s}{sup 0}{yields}{phi}{phi}) using 180 pb{sup -1} of data collected by the CDF II experiment at the Fermilab Tevatron collider. In addition, the BR and direct CP asymmetry for the B{sup +}{yields}{phi}K{sup +} decay are measured. We obtain BR(B{sub s}{sup 0}{yields}{phi}{phi})=[14{sub -5}{sup +6}(stat){+-}6(syst)]x10{sup -6}, BR(B{sup +}{yields}{phi}K{sup +})=[7.6{+-}1.3(stat){+-}0.6(syst)]x10{sup -6}, and A{sub CP}(B{sup +}{yields}{phi}K{sup +})=-0.07{+-}0.17(stat)(+0.03/-0.02)(syst). Both decays are governed in the standard model by second order (penguin) b{yields}sss amplitudes.

• OSTI ID: 20696445
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 3 Vol. 95; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B NEUTRAL MESONS
B PLUS MESONS
BRANCHING RATIO
CP INVARIANCE
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
HADRONIC PARTICLE DECAY
KAONS PLUS
STANDARD MODEL
VECTOR MESONS