Measurement of the average lifetime of hadrons containing bottom quarks

Journal Article · Fri Jan 01 04:00:00 EST 1988 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.37.41· OSTI ID:5712433

Klem,; Atwood, W B; Barish, B C; Bonneaud, G R; Courau, A; Donaldson, G J; Dubois, R; Duro, M M; Elsen, E E; Gao, S G; others, and

A measurement of the average lifetime of hadrons containing bottom quarks is presented. The b hadrons are produced in e/sup +/e/sup -/ annihilation at 29 GeV, and the lifetime is determined from the impact parameters of high-transverse-momentum electrons produced in the decay of the b hadrons. A b lifetime of tau/sub b/ = 1.17/sup +0.27//sub -0.22/(stat)/sup +0.17//sub 0.16/(sys) psec is determined from a maximum-likelihood fit to the impact parameters. Particular care has been taken to describe the experimental resolution correctly in the fit.

• Research Organization: California Institute of Technology, Pasadena, California 91125
• OSTI ID: 5712433
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 37:1; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BASIC INTERACTIONS
BEAUTY PARTICLES
BRANCHING RATIO
CHERENKOV COUNTERS
CROSS SECTIONS
DECAY
DRIFT CHAMBERS
ELECTROMAGNETIC INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FIELD THEORIES
GEV RANGE
GEV RANGE 10-100
HADRONS
IMPACT PARAMETER
INTERACTIONS
KOBAYASHI-MASKAWA MATRIX
LEPTON-LEPTON INTERACTIONS
LIFETIME
LINEAR MOMENTUM
MATRICES
MEASURING INSTRUMENTS
MULTIWIRE PROPORTIONAL CHAMBERS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PEP STORAGE RINGS
PROPORTIONAL COUNTERS
RADIATION DETECTORS
STORAGE RINGS
TRANSVERSE MOMENTUM
UNIFIED-FIELD THEORIES
WEAK PARTICLE DECAY