Measurement of {Upsilon}(5S) decays to B{sup 0} and B{sup +} mesons

Journal Article · Tue Jun 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.112003· OSTI ID:21407936

Drutskoy, A; Kinoshita, K; Schwartz, A J ^[1]; Adachi, I; Haba, J; Itoh, R; Iwasaki, Y; Katayama, N; Kichimi, H; Krokovny, P; Nakao, M; Nishida, S; Sakai, Y; Sumisawa, K; Trabelsi, K; Tsuboyama, T; Uno, S; Wicht, J ^[2]; Aihara, H ^[3]; Aulchenko, V ^[4]

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1. University of Cincinnati, Cincinnati, Ohio 45221 (United States)
2. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
3. Department of Physics, University of Tokyo, Tokyo (Japan)
4. Budker Institute of Nuclear Physics, Novosibirsk (Russian Federation)

Decays of the {Upsilon}(5S) resonance to channels with B{sup +} and B{sup 0} mesons are studied using a 23.6 fb{sup -1} data sample collected with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider. Fully reconstructed B{sup +{yields}}J/{psi}K{sup +}, B{sup 0{yields}}J/{psi}K*{sup 0}, B{sup +{yields}}D{sup 0{pi}+}, and B{sup 0{yields}}D{sup -{pi}+} decays are used to obtain the charged and neutral B production rates per bb event, f(B{sup +})=(72.1{sub -3.8}{sup +3.9{+-}}5.0)% and f(B{sup 0})=(77.0{sub -5.6}{sup +5.8{+-}}6.1)%. Assuming equal rates to B{sup +} and B{sup 0} mesons in all channels produced at the {Upsilon}(5S) energy, we measure the fractions for transitions to two-body and three-body channels with B meson pairs, f(BB)=(5.5{sub -0.9}{sup +1.0{+-}}0.4)%, f(BB*+B*B)=(13.7{+-}1.3{+-}1.1)%, f(B*B*)=(37.5{sub -1.9}{sup +2.1{+-}}3.0)%, f(BB{pi})=(0.0{+-}1.2{+-}0.3)%, f(BB*{pi}+B*B{pi})=(7.3{sub -2.1}{sup +2.3{+-}}0.8)%, and f(B*B*{pi})=(1.0{sub -1.3}{sup +1.4{+-}}0.4)%. The latter three fractions are obtained assuming isospin conservation.

• OSTI ID: 21407936
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 11; Other Information: DOI: 10.1103/PhysRevD.81.112003; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B NEUTRAL MESONS
B PLUS MESONS
ELECTRON-POSITRON COLLISIONS
ISOSPIN
J PSI-3097 MESONS
KEK LINAC
PARTICLE DECAY
PIONS PLUS
RESONANCE
THREE-BODY PROBLEM
TWO-BODY PROBLEM
ACCELERATORS
B MESONS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
CHARMONIUM
COLLISIONS
DECAY
ELECTRON COLLISIONS
ELEMENTARY PARTICLES
HADRONS
LINEAR ACCELERATORS
MANY-BODY PROBLEM
MESONS
PARTICLE PROPERTIES
PIONS
POSITRON COLLISIONS
PSEUDOSCALAR MESONS
QUARKONIUM
VECTOR MESONS