A search for the B sub s meson in. Upsilon. (5S) decays

Thesis/Dissertation · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5225123

Nandi, Sumita

The author has examined a data set consisting of 135 pb{sup {minus}1} of integrated luminosity taken on the {Upsilon}(5S) with the CLEO detector in search of evidence for B{sub s} meson production. The search is conducted by comparing the products {Upsilon}(5S) decays with those of {Upsilon}(4S) which is known to decay mostly to B{sup 0}{bar B}{sup 0} and B{sup {minus}}B{sup +}. He attempts to exploit the expected differences between the B{sub s} and B{sup 0}, namely mass and constituent quark content. The inclusive lepton spectrum from {Upsilon}(5S) decays is fit to determine if it is more consistent with having resulted from the decays of B{sub s}, mesons or with B{sup 0} and B{sup +} mesons. At 90% C.L. he finds a lower limit of 38 or 39% of {Upsilon}(5S) decays are to B{sub s} meson pairs depending on the model of semileptonic decay used, assuming a B{sub s} mass around 5.37 GeV, and assuming that the {Upsilon}(5S) decays to be-flavored meson pairs all the time. The inclusive yields of K{sup +}, K{sup 0}, {phi}, D{sup 0}, and D{sub s} mesons (and charge conjugates) on the two when interpreted as the result of B{sub s} meson decays at the {Upsilon}(5S) decays that produce B{sub s} meson pairs. A search for exclusive hadronic B{sub s} decays was conducted and a few candidate events near a mass of 5.395 GeV were found.

• Research Organization: Cornell Univ., Ithaca, NY (United States)
• OSTI ID: 5225123
• Country of Publication: United States
• Language: English

Related Subjects

662350* -- Decays of Mesons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTI-B NEUTRAL MESONS
B MESONS
B MINUS MESONS
B NEUTRAL MESONS
B PLUS MESONS
BEAUTY PARTICLES
BOSONS
BOTTOMONIUM
COMPARATIVE EVALUATIONS
DECAY
ELECTROMAGNETIC PARTICLE DECAY
ELEMENTARY PARTICLES
EVALUATION
FERMIONS
HADRONIC PARTICLE DECAY
HADRONS
INCLUSIVE INTERACTIONS
INTERACTIONS
MASS
MESONS
PAIR PRODUCTION
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUARKONIUM
QUARKS
SEMILEPTONIC DECAY
WEAK PARTICLE DECAY