Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Measurement of the branching ratio for decay of UPSILON states to. mu. /sup +/. mu. /sup -/

Journal Article · · Phys. Rev. Lett.; (United States)
; ; ; ; ; ; ; ; ; ;
Using the Columbia University--Stony Brook detector at the Cornell Electron Storage Ring, we have measured B/sub ..mu..//sub ..mu../, the branching fraction into muons, of the 1S, 2S, and 3S UPSILON mesons. We obtain B/sub ..mu..//sub ..mu../(1S) = (2.61 +- 0.09 +- 0.11)%, GAMMA/sub tot/(1S) = 51.1 +- 3.2 keV, B/sub ..mu..//sub ..mu../(2S) = (1.38 +- 0.25 +- 0.15)%, GAMMA/sub tot/(2S) = 42.3 +- 9.2 keV, B/sub ..mu..//sub ..mu../(3S) = (1.73 +- 0.15 +- 0.11)%, and GAMMA/sub tot/(3S) = 27.7 +- 3.7 kev. We also derive, from these results, ..cap alpha../sub s/ = 0.174 and ..lambda../sub M//sub S-bar/ = 157 MeV, where MS-bar denotes the modified minimal-subtraction scheme.
Research Organization:
Physics Department, State University of New York at Stony Brook, Stony Brook, New York 11794
OSTI ID:
6270690
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 62:18; ISSN PRLTA
Country of Publication:
United States
Language:
English

Similar Records

Measurement of the branching fraction of. Upsilon. 's yields. mu. mu
Thesis/Dissertation · Thu Dec 31 23:00:00 EST 1987 · OSTI ID:5828197
Measurement of the leptonic branching ratios of the UPSILON(1S), UPSILON(2S), and UPSILON(3S)
Journal Article · Sun Mar 13 23:00:00 EST 1983 · Phys. Rev. Lett.; (United States) · OSTI ID:6237627
High-statistics study of UPSILON(2S). --> pi. /sup +/. pi. /sup -/UPSILON(1S)
Journal Article · Mon Oct 01 00:00:00 EDT 1984 · Phys. Rev. D; (United States) · OSTI ID:5997431

Related Subjects

645102* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Weak Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BASIC INTERACTIONS
BOSONS
BOTTOMONIUM
BRANCHING RATIO
DATA
DECAY
ELECTRON-POSITRON INTERACTIONS
ELEMENTARY PARTICLES
EXPERIMENTAL DATA
FERMIONS
HADRONS
INFORMATION
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTONIC DECAY
LEPTONS
MESONS
MUONS
MUONS MINUS
MUONS PLUS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PARTICLE WIDTHS
QUARKONIUM
UPSILON-10023 MESONS
UPSILON-10355 MESONS
UPSILON-9460 MESONS
VECTOR MESONS
WEAK INTERACTIONS
WEAK PARTICLE DECAY