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Measurement of B sup 0 B 0 mixing at the Fermilab Tevatron Collider

Journal Article · · Physical Review Letters; (United States)
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The {ital B}{sup 0} {ital {bar B}} {sup 0} average mixing parameter {chi} has been extracted from {ital e}{mu} and {ital ee} events produced in {ital p{bar p}} collisions at {radical}{ital s} =1.8 TeV. In a sample of 900 {ital e}{mu} events, the like-sign to opposite-sign charge ratio {ital R} is measured to be 0.556{plus minus}0.048(stat){sub {minus}0.042}{sup +0.035}(syst). In the absence of mixing, the expected value of {ital R} would be 0.23{plus minus}0.06. The corresponding number for 212 {ital ee} events is 0.573{plus minus}0.116(stat){plus minus}0.047(syst) with an expected nonmixing value of 0.24{plus minus}0.07. The observed excess in {ital R} leads to a combined determination of {chi}=0.176{plus minus}0.031(stat+syst) {plus minus}0.032 (model), where the last uncertainty is due to Monte Carlo modeling.
OSTI ID:
5926146
Journal Information:
Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:24; ISSN PRLTA; ISSN 0031-9007
Country of Publication:
United States
Language:
English

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Related Subjects

662340* -- Hadron Interactions-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTI-B NEUTRAL MESONS
B MESONS
B NEUTRAL MESONS
BARYON-BARYON INTERACTIONS
BEAUTY PARTICLES
BOSONS
DATA
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
FERMILAB COLLIDER DETECTOR
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
INFORMATION
INTERACTIONS
LEPTONS
LINEAR MOMENTUM
MESONS
MIXING
NUCLEON-ANTINUCLEON INTERACTIONS
NUMERICAL DATA
PARAMETRIC ANALYSIS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PROBABILITY
PROTON-ANTIPROTON INTERACTIONS
PSEUDOSCALAR MESONS
TEV RANGE
TEV RANGE 01-10
TRANSVERSE MOMENTUM