Study of the decays D r arrow K. pi. pi. e. nu. and D r arrow K sup *. pi. e. nu

Journal Article · Wed Apr 01 04:00:00 EST 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.45.R2177· OSTI ID:7044186

Anjos, J C; Appel, J A; Bean, A; Bracker, S B; Browder, T E; Cremaldi, L M; Duboscq, J E; Elliott, J R; Escobar, C O; Gibney, M C; Hartner, G F; Huber, J; Karchin, P E; Kumar, B R; Losty, M J; Luste, G J; Mantsch, P M; Martin, J F; McHugh, S; Menary, S R ; Morrison, R J; Nash, T; Pinfold, J; Punkar, G; Purohit, M V; Ross, W R; Santoro, A F.S.; Schmidt, D M; Shoup, A L; Sliwa, K; Sokoloff, M D; Souza, M H.G.; Sperka, D J; Streetman, M E; Stundzia, A B; Witherell, M S ^[1]

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1. University of California, Santa Barbara, California 93106 (United States) Carleton University, Ottaway, Ontario, K1S5B6 (Canada) Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro (Brazil) University of Cincinnati, Cincinnati, Ohio 45221 (United States) University of Colorado, Boulder, Colorado 80309 (United States) Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States) University of Mississippi, Oxford, Mississippi 38677 (United States) National Research Counci

We have searched for the exclusive semileptonic decay modes {ital D}{sup +}{r arrow}{ital {bar K}}{pi}{pi}{ital e}{sup +}{nu}{sub {ital e}} and {ital D}{sup +}{r arrow}{ital {bar K}} {sup *}{pi}{ital e}{sup +}{nu}{sub {ital e}} in the data from the Fermilab photoproduction experiment E691. With good sensitivity, we observe no signals in the channels {ital D}{sup +}{r arrow}{ital K}{sup {minus}}{pi}{sup +}{pi}{sup 0}{ital e+}{nu}{sub {ital e}} and {ital D}{sup +}{r arrow}{ital {bar K}} {sup 0}{pi}{sup +}{pi}{sup {minus}}{ital e+}{nu}{sub {ital e}}, and set upper limits of {ital B}({ital D}{sup +}{r arrow}all {ital {bar K}} {sup *}{pi}{ital e}{sup +}{nu}{sub {ital e}}){lt}1.2% and {ital B}({ital D}{sup +}{r arrow}all {ital {bar K}}{pi}{pi}{ital e}{sup +}{nu}{sub {ital e}}) {lt}0.9%, at the 90% confidence level. (For these limits we use isospin invariance to extract limits which include all charge states.) These modes are expected to be the most common semileptonic decays next to the dominant {ital {bar K}e}{sup +}{nu}{sub {ital e}} and {ital {bar K}} {sup *}{ital e+}{nu}{sub {ital e}}, but the observed limits represent a small fraction of the inclusive semileptonic branching ratio of (17.0{plus minus}1.9{plus minus}1.7)%.

• OSTI ID: 7044186
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 45:7; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662350* -- Decays of Mesons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIKAONS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESONS
D MESONS
D PLUS MESONS
DECAY
ELECTROMAGNETIC INTERACTIONS
ELECTRON NEUTRINOS
ELEMENTARY PARTICLES
EXCLUSIVE INTERACTIONS
FERMIONS
HADRONS
INTERACTIONS
ISOSPIN
KAONS
LEPTONS
MASS SPECTRA
MASSLESS PARTICLES
MATRIX ELEMENTS
MATTER
MESONS
MONTE CARLO METHOD
NEUTRINOS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PHOTOPRODUCTION
PIONS
POSITRONS
PROBABILITY
PSEUDOSCALAR MESONS
SEMILEPTONIC DECAY
SPECTRA
STRANGE MESONS
STRANGE PARTICLES
WEAK PARTICLE DECAY