Limits on neutral B meson mixing and the ratio of neutral to charged B meson lifetimes
Thesis/Dissertation
·
OSTI ID:5962803
Limits on B/sup 0/B vector/sup 0/ mixing and on the ratio of the lifetimes for neutral and charged B mesons are measured using the CLEO detector at the Cornell Electron Storage Ring (CESR). B/sup 0/B vector/sup 0/ and B/sup +/ B/sup -/ events from Upsilon(4S) decay are studied. Using dilepton events 90% confidence-level limits of 0.44 < tau/sub B/sup 0///tau/sub B/sup +// < 2.05 are found for the ratio of the lifetimes of neutral and charged B mesons. Dilepton charge correlations provide a clean method for placing limits of B/sup 0/B vector/sup 0/ mixing. A feasibility study is performed and limits are placed on B/sup 0/B vector/sup 0/ mixing also using kaon-lepton charge correlations. Both methods give 90% confidence-level limits on the mixing parameter y of y < 0.25 if one assumes that 42% of the B mesons from the Upsilon(4S) are neutral and tau/sub B/sup 0///tau/sub B/sup +// = 1. Combining the two independent methods yields y < 0.20 at the 90% confidence-level. The importance of these measurements is discussed within the framework of the standard electroweak model.
- Research Organization:
- Carnegie-Mellon Univ., Pittsburgh, PA (USA)
- OSTI ID:
- 5962803
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
BOSONS
CESR STORAGE RING
CONFIGURATION MIXING
CORRELATIONS
DATA
DECAY
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
FIELD THEORIES
HADRONS
HEAVY LEPTONS
INFORMATION
INTERACTIONS
LEPTONS
LIFETIME
LIMITING VALUES
MATHEMATICAL MODELS
MESONS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE MODELS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
SEMILEPTONIC DECAY
STORAGE RINGS
TAU PARTICLES
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
WEAK PARTICLE DECAY
WEINBERG-SALAM GAUGE MODEL
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
BOSONS
CESR STORAGE RING
CONFIGURATION MIXING
CORRELATIONS
DATA
DECAY
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
FIELD THEORIES
HADRONS
HEAVY LEPTONS
INFORMATION
INTERACTIONS
LEPTONS
LIFETIME
LIMITING VALUES
MATHEMATICAL MODELS
MESONS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE MODELS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
SEMILEPTONIC DECAY
STORAGE RINGS
TAU PARTICLES
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
WEAK PARTICLE DECAY
WEINBERG-SALAM GAUGE MODEL