B/sup 0/B-bar /sup 0/ mixing signal from B/sup 0/ and B/sub s//sup 0/ meson production between the UPSILON(4S) and UPSILON(6S)

Journal Article · Thu Sep 01 04:00:00 EDT 1988 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.38.1619· OSTI ID:6839315

Ono, S; Sanda, A I; Toernqvist, N A

Using the quark-pair-creation model, the quark hybrid mixing model, and the unitarized quark model, we compute the expected signal of same-sign dileptons from the effect of B/sub d//sup 0/B-bar /sub d//sup 0/ and B/sub s//sup 0/B-bar /sub s//sup 0/ mixing as a function of the c.m. energy in the UPSILON resonance region. Our models predict B(UPSILON(4S)..-->..B/sup +/B/sup -/)/B(UPSILON(4S)..-->..B/sup 0/B-bar/sup 0/) near unity, for a B/sup 0/-B/sup +- / mass splitting of 4 +- 3.4 MeV, while using phase space alone, as the experimental group does, gives about 1.4 +- 0.2. Combining our model prediction with the recent ARGUS data we renormalize their experimental mixing parameter r/sub d/ from 0.21 +- 0.08 to 0.19 +- 0.08. Using this experimental mixing parameter, our model calculations of B/sup 0//sub d/B-bar/sup 0//sub d/ and B/sup -//sub s/B-bar/sup 0//sub s/ production, and the standard Kobayashi-Maskawa mixing theory with three families, we find that the B/sup 0/B-bar /sup 0/ mixing signal from the UPSILON(5S) is predicted to be comparable to that from the UPSILON(4S). Some predictions are also discussed when we allow the mixing parameters to be in ranges beyond the standard model.

• Research Organization: Department of Physics, University of Tokyo, Bunkyo-ku Hongo, Tokyo 113, Japan
• OSTI ID: 6839315
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 38:5; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645203* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTI-B NEUTRAL MESONS
B MESONS
B NEUTRAL MESONS
BOSONS
BRANCHING RATIO
COMPOSITE MODELS
CONFIGURATION MIXING
ELEMENTARY PARTICLES
FIELD THEORIES
HADRONS
INTERACTIONS
KOBAYASHI-MASKAWA MATRIX
MATHEMATICAL MODELS
MATRICES
MESONS
PARTICLE MODELS
PSEUDOSCALAR MESONS
QUARK MODEL
UNIFIED-FIELD THEORIES