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Experimental study of the semileptonic decay D/sup +/. -->. K-bar/sup 0/e/sup +/. nu. /sub e/

Journal Article · · Phys. Rev. Lett.; (United States)
; ; ; ; ; ; ; ; ; ;
The decay D/sup +/..-->..K/sup -/..pi../sup +/e/sup +/..nu../sub e/ has been studied in the Fermilab photoproduction experiment E691. The ratio of branching ratios, B(D/sup +/..-->..K-bar/sup *//sup 0/e/sup +/..nu../sub e/)/B (D/sup +/..-->..K/sup -/..pi../sup +/..pi../sup +/), is found to be 0.49 +- 0.04 +- 0.05, corresponding to a D/sup +/..-->..K-bar/sup *//sup 0/e/sup +/..nu../sub e/ branching ratio of (4.5 +- 0.7 +- 0.5)%. The branching ratio to the nonresonant (K/sup -/..pi../sup +/)/sub NR/e..nu../sub e/ final state is found to be less than 0.7% at the 90% confidence level. The K/sup *//sup 0/ mesons have a ratio of longitudinal to transverse polarization of 2.4/sub -0.9//sup +1.7/ +- 0.2. .AE
Research Organization:
University of California, Santa Barbara, California, 93106
OSTI ID:
6436624
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 62:7; ISSN PRLTA
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
ANGULAR DISTRIBUTION
ANTIKAONS
ANTIKAONS NEUTRAL
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BOSONS
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESONS
D MESONS
D PLUS MESONS
DATA
DECAY
DISTRIBUTION
ELECTRON NEUTRINOS
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
HADRONS
INFORMATION
KAONS
KAONS MINUS
KAONS NEUTRAL
LEPTONS
MASS SPECTRA
MASSLESS PARTICLES
MATHEMATICAL SPACE
MESONS
MONTE CARLO METHOD
NEUTRINOS
NUMERICAL DATA
PARTICLE DECAY
PHASE SPACE
PIONS
PIONS PLUS
POSITRONS
PSEUDOSCALAR MESONS
SEMILEPTONIC DECAY
SPACE
SPECTRA
STRANGE MESONS
STRANGE PARTICLES
WEAK PARTICLE DECAY