Study of the decays D sup 0 r arrow K K ,. pi. pi

Journal Article · Mon Sep 03 04:00:00 EDT 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.65.1184· OSTI ID:6513975

Alexander, J; Artuso, M; Bebek, C; Berkelman, K; Browder, T; Cassel, D G; Cheu, E; Coffman, D M; Crawford, G; DeWire, J W; Drell, P S; Ehrlich, R; Gittelman, B; Gray, S W; Halling, A M; Hartill, D L; Heltsley, B K; Honscheid, K; Kandaswamy, J; Katayama, N ; Kreinick, D L; Lewis, J D; Ludwig, G S; Mistry, N B; Nandi, S; Nordberg, E; O'Grady, C; Peterson, D; Pisharody, M; Riley, D; Sapper, M; Selen, M; Silverman, A; Stone, S; Worden, H; Worris, M; Sadoff, A J; Avery, P; Besson, D; Garren, L; Yelton, J; Kinoshita, K; Pipkin, F M; Procario, M; Wilson, R; Wolinski, J; Xiao, D; Zhu, Y; Ammar, R; Baringer, P; Coppage, D; Haas, P; Kelly, M; Kwak, N; Lam, H; Ro, S; Jawahery, A; Kubota, Y; Nelson, J K; Perticone, D; Poling, R; Fulton, R; Jensen, T; Johnson, D R; Kagan, H; Kass, R; Morrow, F; Whitmore, J; Wilson, P; Bortoletto, D; Chen, W; Dominick, J; McIlwain, R L; Miller, D H; Ng, C R; Schaffner, S F; Shibata, E I; Shi,

Using the CLEO detector we have observed the Cabibbo-suppressed decays {ital D}{sup 0}{r arrow}{ital K}{sup 0}{ital {bar K}0}, {ital K}{sup +}{ital K}{sup {minus}}, and {pi}{sup +}{pi}{sup {minus}}. We determine {ital B}({ital D}{sup 0}{r arrow}{ital K}{sup 0}{ital {bar K}0})= (0.13{sup +0.07}{sub {minus}0.05}{sup +0.02}{sub {minus}0.02})%. Our measurement {ital B}({ital D}{sup 0}{r arrow}{ital K}{sup +}{ital K}{sup {minus}})/{ital B}({ital D}{sup 0}{r arrow}{pi}{sup +}{pi}{sup {minus}})=2.35{plus minus}0.37{plus minus}0.28 represents asubstantial improvement over previous results. We find no evidence for the decay {ital D}{sup 0}{r arrow}{pi}{sup 0}{pi}{sup 0}, and place a 90%-confidence-level upper limit of {ital B}({ital D}{sup 0}{r arrow}{pi}{sup 0}{pi}{sup 0}){lt}0.46%.

• DOE Contract Number: FG05-86ER40272
• OSTI ID: 6513975
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 65:10; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESONS
D MESONS
D NEUTRAL MESONS
DATA
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
GEV RANGE
GEV RANGE 01-10
HADRONIC PARTICLE DECAY
HADRONS
INFORMATION
KAONS
LIMITING VALUES
MASS
MESONS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE IDENTIFICATION
PIONS
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES