Measurement of the hadronic structure of semileptonic D sup 0 and D sup + decays

Journal Article · Mon Feb 25 04:00:00 EST 1991 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.66.1011· OSTI ID:5909233

Bai, Z; Bolton, T; Brown, J S; Bunnell, K O; Burchell, M; Burnett, T H; Cassell, R E; Coffman, D; Cook, V; Coward, D H; DeJongh, F; Dorfan, D E; Drinkard, J; Dubois, G P; Eigen, G; Eisenstein, B I; Freese, T; Gatto, C; Gladding, G; Grab, C ; Heusch, C A; Hitlin, D G; Izen, J M; Kim, P C; Labs, J; Li, A; Lockman, W S; Mallik, U; Matthews, C G; Mincer, A I; Mir, R; Mockett, P M; Nemati, B; Odian, A; Parrish, L; Partridge, R; Pitman, D; Richman, J D; Sadrozinski, H F.W.; Scarlatella, M; Schalk, T L; Schindler, R H; Seiden, A; Simopoulos, C; Stockdale, I E; Toki, W; Tripsas, B; Villa, F; Wang, M Z; Wasserbaech, S; Weinstein, A J; Weseler, S; Willutzki, H J; Wisinski, D; Wisniewski, W J; Xu, R; Zhu, Y ^[1]

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1. California Institute of Technology, Pasadena, California 91125 (US) University of California at Santa Cruz, Santa Cruz, California 95064 University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 University of Iowa, Iowa City, Io

Absolute branching fractions for the {ital D}{sub {ital l}3} and {ital D}{sub {ital l}4} decays {ital D}{sup +}{r arrow}{ital {bar K}} {sup 0}{ital e+}{nu}{sub {ital e}}, {ital D}{sup +}{r arrow}{ital {bar K}} {sup 0}{mu}{sup +}{nu}{sub {mu}}, {ital D}{sup +}{r arrow}{ital {bar K}} {sup *0}{ital e+}{nu}{sub {ital e}}, and {ital D}{sup 0}{r arrow}{ital K}{sup *{minus}}{ital e+}{nu}{sub {ital e}} are determined using completely reconstructed {ital D{bar D}} events at the {psi}(3770). Reconstructed {ital D}{sup 0}{r arrow}{ital K}{sup {minus}}{ital e+}{nu}{sub {ital e}} decays are used to determine the pole mass of the {ital f}{sub 4}({ital q}{sup 2}) form factor. Resonant {ital K}{sup *} production dominates the process {ital D}{r arrow}{ital K}{pi}{ital e}{nu}; the {ital K}{sup *} polarization is measured. Limits on several Cabibbo-suppressed channels are evaluated. A global fit imposing isospin symmetry is performed to the measured exclusive and inclusive semileptonic {ital D}{sup 0} and {ital D}{sup +} branching fractions to obtain an improved set of branching fractions.

• DOE Contract Number: AC03-76SF00515; AC02-76ER01195; AC03-81ER40050; AM03-76SF00010
• OSTI ID: 5909233
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 66:8; 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
D PLUS MESONS
DATA
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
GEV RANGE
GEV RANGE 01-10
HADRONS
INFORMATION
MESONS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE KINEMATICS
POLARIZATION
PSEUDOSCALAR MESONS
SEMILEPTONIC DECAY
TIME-OF-FLIGHT METHOD
WEAK PARTICLE DECAY