Search for the decay [ital D][sup 0][r arrow][mu][sup +][mu][sup [minus]]

Using a silicon-microstrip detector array to identify secondary vertices occurring downstream of a short platinum target, we have searched for the decay [ital D][sup 0][r arrow][mu][sup +][mu][sup [minus]]. Normalized relative to the [ital J]/[psi][r arrow][mu][sup +][mu][sup [minus]] signal observe...

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Bibliographic Details
Published in:Physical review. D, Particles and fields Particles and fields, 1994-07, Vol.50:1
Main Authors: Mishra, C.S., Brown, C.N., Cooper, W.E., Gounder, K., Kaplan, D.M., Martin, V.M., Preston, R.S., Sa, J., Tanikella, V., Isenhower, L.D., Sadler, M.E., Schnathorst, R., Lederman, L.M., Schub, M.H., Gidal, G., Kowitt, M.S., Luk, K.B., Carey, T.A., Jeppesen, R.E., Kapustinsky, J.S., Lane, D.W., Leitch, M.J., Lillberg, J.W., McGaughey, P.L., Moss, J.M., Peng, J.C., Childers, R.L., Darden, C.W., Teng, P.K.
Format: Article
Language:English
Subjects:
662210 > Specific Theories & Interaction Models
662420 > Properties of Mesons & Meson Resonances-- (1992-)
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BASIC INTERACTIONS
BOSONS
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESONS
CHARMONIUM
D MESONS
D NEUTRAL MESONS
DECAY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INTERACTIONS
J PSI-3097 MESONS
LEPTONIC DECAY
LEPTONS
LIMITING VALUES
MATTER
MESONS
MUONS
MUONS MINUS
MUONS PLUS
Pa
PARTICLE DECAY
Particle Systematics > Unified Theories & Models > (1992-)
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PSEUDOSCALAR MESONS
QUARKONIUM
VECTOR MESONS
WEAK INTERACTIONS
WEAK PARTICLE DECAY 662350 > Decays of Mesons-- (1992-)
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Summary:Using a silicon-microstrip detector array to identify secondary vertices occurring downstream of a short platinum target, we have searched for the decay [ital D][sup 0][r arrow][mu][sup +][mu][sup [minus]]. Normalized relative to the [ital J]/[psi][r arrow][mu][sup +][mu][sup [minus]] signal observed in the same data sample, for a 3.25-mm minimum decay distance our branching-ratio sensitivity is (4.8[plus minus]1.4)[times]10[sup [minus]6] per event, and after background subtraction we observe [minus]4.1[plus minus]4.8 events. Using the statistical approach advocated by the Particle Data Group, we obtain a limit [ital B]([ital D][sup 0][r arrow][mu][sup +][mu][sup [minus]])[lt]3.1[times]10[sup [minus]5] at 90% confidence, confirming with a different technique the limit previously obtained by Louis [ital et] [ital al]. The interpretation of the upper limit involves complex statistical issues; we present another approach which is more suitable for combining the results of different experiments.
ISSN:0556-2821
1089-4918
DOI:10.1103/PhysRevD.50.R9