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Possible mechanism for non- B B decays of the. Upsilon. (4 S )

Journal Article · · Physical Review Letters; (USA)
;  [1];  [2]
  1. Department of Physics, Brookhaven National Laboratory, Upton, NY (USA)
  2. Institute for Theoretical Physics, University of California, Santa Barbara, CA (USA)
+ Show Author Affiliations
Recent observation of {Upsilon}(4{ital S}){r arrow}{psi}+{ital X} with the {psi} too energetic to come from the decay of a {ital B} meson suggests that there could be a substantial rate of non-{ital B{bar B}} decay of {Upsilon}(4{ital S}). We attempt to explain this by conventional quarkonium spectroscopy and suggest that {Upsilon}(4{ital S}){r arrow}{ital h}{sub {ital b}}(1{ital P})+{eta} and {Upsilon}(4{ital S}){r arrow}{eta}{sub {ital b}}+{ital h}{sub 1}(1170) with subsequent decays into {psi}'s are possible candidates. A crude estimate of the corresponding rates show them to be of the correct order of magnitude. The model implies that {ital h}{sub {ital b}} decays to {ital D{bar D}} are more frequent than into the {psi}, causing a potentially serious background to the sample used for determination of {vert bar}{ital V}{sub {ital u}{ital b}}/{ital V}{sub {ital c}{ital b}}{vert bar}.
DOE Contract Number:
AC02-76CH00016
OSTI ID:
6044612
Journal Information:
Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 65:19; ISSN PRLTA; ISSN 0031-9007
Country of Publication:
United States
Language:
English

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Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
645103 -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
BOSONS
BOTTOMONIUM
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESONS
D MESONS
DECAY
ELEMENTARY PARTICLES
HADRONIC PARTICLE DECAY
HADRONS
LEVEL WIDTHS
MESONS
PARTICLE DECAY
PSEUDOSCALAR MESONS
QUARKONIUM
SPECTROSCOPY
UPSILON-10575 MESONS
VECTOR MESONS