Investigation of the process J/{psi} {yields} e{sup +}e{sup -} with the KEDR detector

Investigation of the process J/{psi} {yields} e{sup +}e{sup -} with the KEDR detector

The product of the electron width of the J/{psi} meson and the probability for its decay to an electron-positron pair was measured by using data from the KEDR experiment at the VEPP-4M electron-positron collider. The result was {Gamma}{sub ee} x {Gamma}{sub ee}/{Gamma} = 0.3392 {+-} 0.0068(stat.) {+...

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Bibliographic Details
Published in:Physics of atomic nuclei Vol. 72; no. 3
Main Author: Baldin, E. M.
Format: Journal Article
Language:English
Published: United States 15-03-2009
Subjects:
BOSONS
CHARMONIUM
COLLISIONS
DECAY
ELECTRON COLLISIONS
ELECTRON-POSITRON COLLISIONS
ELECTRONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRONS
J PSI-3097 MESONS
KEV RANGE
LEPTONS
MESONS
PARTICLE ACCELERATORS
PARTICLE IDENTIFICATION
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
POSITRON COLLISIONS
PROBABILITY
QUARKONIUM
STORAGE RINGS
VECTOR MESONS
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Summary:The product of the electron width of the J/{psi} meson and the probability for its decay to an electron-positron pair was measured by using data from the KEDR experiment at the VEPP-4M electron-positron collider. The result was {Gamma}{sub ee} x {Gamma}{sub ee}/{Gamma} = 0.3392 {+-} 0.0068(stat.) {+-} 0.0063(syst.) keV.
ISSN:1063-7788
1562-692X
DOI:10.1134/S1063778809030132