Title

Measurement of the production ratio of charged and neutral B mesons at the upsilon(4S) resonance

Date of Award

5-2000

Degree Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Physics

Advisor(s)

Sheldon Stone

Keywords

B mesons, Upsilon(4S) resonance, Charged mesons, Neutral mesons, Production ratio

Subject Categories

Elementary Particles and Fields and String Theory | Physics

Abstract

We analyze 9.7 × 10 6 BB¯ pairs recorded with the CLEO detector to determine the production ratio of charged to neutral B mesons produced at the [Special characters omitted.] (4S) resonance. We measure the exclusive rates for B 0 [arrow right] J /[Special characters omitted.] K ([low *])0 and B + [arrow right] J /[Special characters omitted.] K ([low *])+ decays and employ the world-average B -meson lifetime ratio to extract the relative width [Special characters omitted.] With the assumption that f +- + f 00 = 1, we obtain [Special characters omitted.] This production ratio and its uncertainty apply to all exclusive B branching fractions measured at the upsilon(4S) resonance peak.

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