Measurement of Inclusive D{sub s}, D{sup 0}, and J/{psi} Rates and Determination of the B{sub s}{sup (*)}B{sub s}{sup (*)} Production Fraction in bb Events at the {upsilon}(5S) Resonance

Journal Article · Fri Feb 02 00:00:00 EST 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.052001· OSTI ID:20955417

Drutskoy, A; Goldenzweig, P; Kinoshita, K; Kulasiri, R; Schwartz, A J; Somov, A ^[1]; Abe, K; Adachi, I; Dragic, J; Gershon, T; Haba, J; Hazumi, M; Higuchi, T; Itoh, R; Iwasaki, Y; Katayama, N; Kichimi, H; Krokovny, P; Limosani, A; Nakao, M ^[2]

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1. University of Cincinnati, Cincinnati, Ohio 45221 (United States)
2. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)

The inclusive production of D{sub s}, D{sup 0}, and J/{psi} mesons is studied using a 1.86 fb{sup -1} data sample collected on the {upsilon}(5S) resonance with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider. The number of bb events in this {upsilon}(5S) data sample is determined. We measure the branching fractions B({upsilon}(5S){yields}D{sub s}X)/2=(23.6{+-}1.2{+-}3.6)%, B({upsilon}(5S){yields}D{sup 0}X)/2=(53.8{+-}2.0{+-}3.4)%, and B({upsilon}(5S){yields}J/{psi}X)/2=(1.030{+-}0.080{+-}0.067)%. From the D{sub s} and D{sup 0} inclusive branching fractions the ratio f{sub s}=(18.0{+-}1.3{+-}3.2)% of B{sub s}{sup (*)}B{sub s}{sup (*)} to the total bb quark pair production at the {upsilon}(5S) energy is obtained in a model-dependent way.

• OSTI ID: 20955417
• Journal Information: Physical Review Letters, Vol. 98, Issue 5; Other Information: DOI: 10.1103/PhysRevLett.98.052001; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B QUARKS
BRANCHING RATIO
D NEUTRAL MESONS
D S MESONS
INCLUSIVE INTERACTIONS
J PSI-3097 MESONS
PAIR PRODUCTION
RESONANCE