Measurement of the decays D sup 0 r arrow. pi. sup minus. pi. sup + and D sup 0 r arrow K sup minus K+

Journal Article · Sat Nov 30 23:00:00 EST 1991 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.44.R3371· OSTI ID:6095264

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; 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.; Spalding, W 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; Ottawa; Ontario; K1S5B6 (Canada) Centro Brasileiro de Pesquisas Fisicas; Rio de Janerio (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 Council; Ottawa;

Using data from Fermilab photoproduction experiment E691, we measure the ratio of branching fractions between the Cabibbo-suppressed modes {ital B}({ital D}{sup 0}{r arrow}{ital K}{sup {minus}}{ital K+})/{ital B}({ital D}{sup 0}{r arrow}{pi}{sup {minus}}{pi}{sup +}) to be 1.95{plus minus}0.34{plus minus}0.22. We also report branching fractions for the modes {ital D}{sup 0}{r arrow}{ital K}{sup {minus}}{ital K+} and {ital D}{sup 0}{r arrow}{pi}{sup {minus}}{pi}{sup +} relative to the Cabibbo-allowed decay {ital D}{sup 0}{r arrow}{ital K}{sup {minus}}{pi}{sup +}. Furthermore, we place an upper limit of 0.45 at the 90% C.L. on the {ital CP}-violating asymmetry in {ital D}{sup 0}{r arrow}{ital K}{sup {minus}}{ital K+} vs {ital {bar D}} {sup 0}{r arrow}{ital K}{sup {minus}}{ital K+} decays.

• OSTI ID: 6095264
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 44:11; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

661100 -- Classical & Quantum Mechanics-- (1992-)
662120 -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662350* -- Decays of Mesons-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BRANCHING RATIO
CABIBBO ANGLE
CHARM PARTICLES
CHARMED MESONS
COMPOSITE MODELS
CP INVARIANCE
D MESONS
D NEUTRAL MESONS
DECAY
ELEMENTARY PARTICLES
FERMIONS
FLAVOR MODEL
HADRONIC PARTICLE DECAY
HADRONS
INVARIANCE PRINCIPLES
KAONS
KAONS MINUS
KAONS PLUS
LIE GROUPS
MATHEMATICAL MODELS
MATHEMATICAL SPACE
MESONS
MONTE CARLO METHOD
PARTICLE DECAY
PARTICLE IDENTIFICATION
PARTICLE MODELS
PARTICLE PRODUCTION
PHASE SPACE
PIONS
PIONS MINUS
PIONS PLUS
POSTULATED PARTICLES
PROBABILITY
PSEUDOSCALAR MESONS
QUARK MODEL
QUARKS
SPACE
STRANGE MESONS
STRANGE PARTICLES
SU GROUPS
SU-3 GROUPS
SYMMETRY GROUPS