Study of the doubly Cabibbo-suppressed decay D sup + r arrow. phi. K sup + and the singly Cabibbo-suppressed decay D sub s sup + r arrow. phi. K sup +

Journal Article · Mon Nov 16 04:00:00 EST 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.69.2892· OSTI ID:7199794

Anjos, J C; Appel, J A; Bean, A; Bediaga, I; Bracker, S B; Browder, T E; Cremaldi, L M; Duboscq, J E; Elliot, J R; Escobar, C O; Gibney, M C; Hartner, G F; Karchin, P E; Kumar, B R; Lima, J G.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.; Sliwa, K; Sokoloff, M D; Souza, M H.G.; Spalding, W J; Streetman, M E; Stundzia, A B; Witherell, M S ^[1]

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1. University of California-Santa Barbara Santa Barbara; California 93106 (United States) Carleton University; Ottawa; Ontario; K1S 5B6 (Canada) Centro Brasileiro de Pesquisas Fisicas; Rio de Janeiro; Brazil 22290 (United States) University of Colorado; Boulder; Colorado 80309 (United States) Fermi National Accelerator Laboratory; Batavia; Illinois 60510 (United States) National Research Council; Ottawa; Ontario; K1A OR6 (Canada) Universidade de Sao Paulo; Sao Paulo (Brazil) University of Toronto; Torno

We have searched for the doubly Cabibbo-suppressed decay {ital D}{sup {plus minus}}{r arrow}{phi} {ital K}{sup {plus minus}} and the singly Cabibbo-suppressed decay {ital D}{sub {ital s}}{sup {plus minus}}{r arrow}{phi} {ital K}{sup {plus minus}} in data from the Fermilab photoproduction experiment E691. The {ital D}{sup {plus minus}} decay mode is of particular interest because it cannot result from simple spectator decay. We observe a {ital D}{sup {plus minus}} signal corresponding to a branching ratio of {ital B}({ital D}{sup {plus minus}}{r arrow}{phi}{ital K}{sup {plus minus}})=(3.3{sub {minus}1.5}{sup +1.8}{plus minus}0.8){times}10{sup {minus}4}. In the {ital D}{sub {ital s}}{sup {plus minus}} mode we measure an upper limit {ital B}({ital D}{sub {ital s}}{sup {plus minus}}{r arrow}{phi}{ital K}{sup {plus minus}}){lt}0.2%.

• OSTI ID: 7199794
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 69:20; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

662210 -- Specific Theories & Interaction Models
662350* -- Decays of Mesons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BRANCHING RATIO
CABIBBO ANGLE
CHARM PARTICLES
CHARMED MESONS
D MESONS
D PLUS MESONS
D S MESONS
DATA
DECAY
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
HADRONIC PARTICLE DECAY
HADRONS
INFORMATION
KAONS
KAONS PLUS
MASS SPECTRA
MESONS
NUMERICAL DATA
PARTICLE DECAY
PHI-1020 MESONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
QUARKONIUM
QUARKS
SPECTRA
STRANGE MESONS
STRANGE PARTICLES
STRANGEONIUM
VECTOR MESONS