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 · Mon Aug 30 00:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.71.1311· OSTI ID:6025691

Alam, M S; Kim, I J; Nemati, B; O'Neill, J; Severini, H; Sun, C R; Zoeller, M M; Crawford, G; Daubenmier, C M; Fulton, R; Fujino, D; Gan, K K; Honscheid, K; Kagan, H; Kass, R; Lee, J; Malchow, R; Morrow, F; Skovpen, Y; Sung, M ; White, C; Whitmore, J; Wilson, P; Butler, F; Fu, X; Kalbfleisch, G; Lambrecht, M; Ross, W R; Skubic, P; Snow, J; Wang, P L; Wood, M; Bortoletto, D; Brown, D N; Fast, J; McIlwain, R L; Miao, T; Miller, D H; Modesitt, M; Schaffner, S F; Shibata, E I; Shipsey, I P.J.; Wang, P N; Battle, M; Ernst, J; Kroha, H; Roberts, S; Sparks, K; Thorndike, E H; Wang, C H; Dominick, J; Sanghera, S; Skwarnicki, T; Stroynowski, R; Artuso, M; He, D; Goldberg, M; Horwitz, N; Kennett, R; Moneti, G C; Muheim, F; Mukhin, Y; Playfer, S; Rozen, Y; Stone, S; Thulasidas, M; Vasseur, G; Zhu, G; Bartelt, J; Csorna, S E; Egyed, Z; Jain, V; Sheldon, P; Akerib, D S; Barish, B; Chadha, M; Chan, S; Cowen, D F; Eigen, G

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), Vol. 71:9; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

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