Measurement of the {omega}, {rho} {sup {yields}} {pi}{sup 0}e{sup +}e{sup -} branching fractions

Journal Article · Tue Jul 15 04:00:00 EDT 2008 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776108070054· OSTI ID:21241980

Achasov, M N; Beloborodov, K I; Berdyugin, A V; Bogdanchikov, A G; Bukin, A D; Bukin, D A; Vasil'ev, A V; Golubev, V B; Druzhinin, V P; Koop, I A; Korol', A A; Koshuba, S V; Pakhtusova, E V; Perevedentsev, E A; Serednyakov, S I; Silagadze, Z K; Skrinsky, A N; Shatunov, Yu M ^[1]

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1. Russian Academy of Sciences, Budker Institute of Nuclear Physics, Siberian Branch (Russian Federation)

The e{sup +}e{sup -} {sup {yields}} {omega}, {rho} {sup {yields}} {pi}{sup 0}e{sup +}e{sup -} processes have been investigated in the experiments with Spherical Neutral Detector at the VEPP-2M e{sup +}e{sup -} collider. The measurements provide the probability B({omega} {sup {yields}} {pi}{sup 0}e{sup +}e{sup -}) = (0.761 {+-} 0.053 {+-} 0.064) x 10{sup -3} of the {omega} {sup {yields}} {pi}{sup 0}e{sup +}e{sup g-} conversion decay and the upper limit B({rho} {sup {yields}} {pi}{sup 0}e{sup +}e{sup -}) < 1.2 x 10{sup -5} (at 90% CL) for the {rho} {sup {yields}} {pi}{sup 0}e{sup +}e{sup -} decay. The transition form factor was measured at three values of the 4-momentum transfer squared.

• OSTI ID: 21241980
• Journal Information: Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 1 Vol. 107; ISSN JTPHES; ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
ELECTRONS
FORM FACTORS
MOMENTUM TRANSFER
OMEGA BARYONS
PAIR PRODUCTION
PARTICLE DECAY
PIONS NEUTRAL
POSITRONS
PROBABILITY
RHO-770 MESONS