Study of the electromagnetic structure of the eta meson in the decay eta. --> mu. /sup +/. mu. /sup -/. gamma

Journal Article · Wed Oct 01 04:00:00 EDT 1980 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6314365

Viktorov, V A; Golovkin, S V; Dzhelyadin, R I; Zaitsev, A M; Kachanov, V A; Konstantinov, A S; Konstantinov, V F; Kubarovskii, V P; Kulik, A V; Landsberg, L G; Leont'ev, V M; Mukhin, V A; Obraztsov, V F; Petrunina, T I; Prokoshkin, Y D

We have detected 600 events of the rare electromagnetic decay eta..--> mu../sup +/..mu../sup -/..gamma... The measured relative decay probability is BR(eta..--> mu../sup +/..mu../sup -/..gamma..) = (3.1 +- 0.4) x 10/sup -4/. The electromagnetic form factor of the eta meson was found to be F(m/sup 2//sub mumu/;0) = (1-m/sup 2//sub mumu//..lambda../sup 2/)/sup -1/, where ..lambda.. = 0.72 +- 0.09 GeV/c/sup 2/, which is in good agreement with the vector-dominance model.

• Research Organization: Institute of High Energy Physics, Serpukhov
• OSTI ID: 6314365
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 32:4; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
DECAY
ELECTROMAGNETIC FORM FACTORS
ELECTROMAGNETIC PARTICLE DECAY
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ETA MESONS
FORM FACTORS
GAMMA RADIATION
HADRONS
IONIZING RADIATIONS
MATHEMATICAL MODELS
MESONS
MUON PAIRS
PARTICLE DECAY
PARTICLE MODELS
PARTICLE PROPERTIES
PROBABILITY
PSEUDOSCALAR MESONS
RADIATIONS
RADIATIVE DECAY
VECTOR DOMINANCE MODEL
WEAK PARTICLE DECAY