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Measurement of the ratio [ital scrB]([ital D][sup +][r arrow][pi][sup 0][ital l+][nu])/[ital scrB]([ital D][sup +][r arrow][ital [bar K]][sup 0][ital l+][nu])

Journal Article · · Physical Review Letters; (United States)
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Using the CLEO-II detector, the branching ratio of the Cabibbo suppressed decay [ital D][sup +][r arrow][pi][sup 0][ital l+][nu], relative to the branching ratio of the Cabibbo favored decay [ital D][sup +][r arrow][ital [bar K]][sup 0][ital l+][nu], is measured to be [ital B]([ital D][sup +][r arrow][pi][sup 0][ital l+][nu])/[ital B]([ital D][sup +][r arrow][ital [bar K]][sup 0][ital l+][nu]) =(8.5[plus minus]2.7[plus minus]1.4)%. From this ratio, the product of the ratio of Cabibbo-Kobayashi-Maskawa (CKM) matrix elements, [vert bar][ital V][sub [ital c][ital d]]/[ital V][sub [ital c][ital s]][vert bar][sup 2], and the form factors at [ital q][sup 2]=0, [vert bar][ital f][sub +][sup [pi]](0)/[ital f][sub +][sup [ital K]](0)[vert bar][sup 2], is determined to be [vert bar][ital V][sub [ital c][ital d]]/[ital V][sub [ital c][ital s]][vert bar][sup 2][vert bar][ital f][sub +][sup [pi]](0)/[ital f][sub +][sup [ital K]](0)[vert bar][sup 2] =0.085[plus minus]0.027[plus minus]0.014.

OSTI ID:
6025691
Journal Information:
Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 71:9; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English

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Related Subjects

662350* -- Decays of Mesons-- (1992-)
662420 -- Properties of Mesons & Meson Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIKAONS
ANTIKAONS NEUTRAL
ANTIMATTER
ANTIPARTICLES
BOSONS
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESONS
D MESONS
D PLUS MESONS
DECAY
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
FORM FACTORS
HADRONS
KAONS
KAONS NEUTRAL
KOBAYASHI-MASKAWA MATRIX
LEPTONS
MASSLESS PARTICLES
MATRICES
MATTER
MESONS
NEUTRINOS
PARTICLE DECAY
PARTICLE PROPERTIES
PIONS
PIONS NEUTRAL
PSEUDOSCALAR MESONS
SEMILEPTONIC DECAY
STRANGE MESONS
STRANGE PARTICLES
UNIFIED-FIELD THEORIES
WEAK PARTICLE DECAY