Observation of the eta'. -->. mu. /sup +/. mu. /sup -/. gamma. decay

Journal Article · Thu Sep 20 00:00:00 EDT 1979 · JETP Lett. (USSR) (Engl. Transl.); (United States)

OSTI ID:5448679

Viktorov, V A; Golovkin, S V; Grutsuk, M V; Dzhelyadin, R I; Zaitsev, A M; Kakauridze, D B; 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; Pokrovskii, N S; Prokoshkin, Y D

The mass spectrum of ..mu../sup +/..mu../sup -/..gamma.. systems produced in the ..pi../sup -/ rho interactions at momenta of 25 and 33 GeV/c was investigated. A wide-aperture magnetic spectrometer and a hodoscopic ..gamma..-ray detector were used for the recording of muon pairs and ..gamma.. quanta. A sharp peak corresponding to the eta' ..-->.. ..mu../sup +/..mu../sup -/..gamma.. decay not observed earlier was detected in the mass spectrum. The relative probability of this decay (8 x 10/sup -5/) and the spectrum of muon pairs are in agreement with the model of the form factor of the eta' meson, which is based on vector dominance.

• Research Organization: Institute of High Energy Physics
• OSTI ID: 5448679
• Journal Information: JETP Lett. (USSR) (Engl. Transl.); (United States), Journal Name: JETP Lett. (USSR) (Engl. Transl.); (United States) Vol. 30:6; ISSN JTPLA
• 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 PARTICLE DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
ETA-958 RESONANCES
FORM FACTORS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MASS SPECTRA
MASSLESS PARTICLES
MATHEMATICAL MODELS
MESON RESONANCES
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MUON PAIRS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PHOTONS
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PSEUDOSCALAR MESONS
RADIATIVE DECAY
RESONANCE PARTICLES
SPECTRA
VECTOR DOMINANCE MODEL
WEAK PARTICLE DECAY