Measurement of the branching ratio for UPSILON/sup '//sup '/. --> mu mu

Journal Article · Wed Apr 01 04:00:00 EST 1987 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.35.2265· OSTI ID:6055362

Kaarsberg, T; Lee-Franzini, J; Lovelock, D M.J.; Narain, M; Schamberger, R D; Sontz, S B; Yanagisawa, C; Willins, J; Franzini, P; Tuts, P M; others, and

Using the CUSB-II detector at the Cornell Electron Storage Ring, we have measured B..mu mu.., the branching fraction into muons, of the UPSILON'' meson. We find B/sub ..mu..//sub ..mu../(UPSILON'') = (1.53 +- 0.33 +- 0.21)%, from which the UPSILON'' total decay width is 25.5 +- 5.0 keV. From this result we obtain ..cap alpha../sub s/ = 0.170/sub -0.012//sup +0.015/, ..lambda../sub M//sub S-bar/ = 148/sub -39//sup +56/ MeV. (MS-bar denotes the modified minimal-subtraction scheme).

• Research Organization: The State University of New York at Stony Brook, Stony Brook, New York 11794
• OSTI ID: 6055362
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 35:7; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BHABHA SCATTERING
BRANCHING RATIO
CESR STORAGE RING
COUPLING CONSTANTS
CROSS SECTIONS
DECAY
ELASTIC SCATTERING
ELECTRODYNAMICS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
INTERACTIONS
LEPTONIC DECAY
LEPTONS
MUONS
PARTICLE DECAY
QUANTUM CHROMODYNAMICS
QUANTUM ELECTRODYNAMICS
QUANTUM FIELD THEORY
SCATTERING
STORAGE RINGS
UPSILON-10350 RESONANCES
WEAK INTERACTIONS
WEAK PARTICLE DECAY