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

Journal Article · Thu Nov 30 23:00:00 EST 1978 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6026271

Bushnin, Y B; Golovkin, S V; Gritsuk, 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; Soldatov, M M

The mass spectrum of ..mu../sup +/..mu../sup -/..gamma.. systems produced in ..pi../sup -/p collisions at momentum 25 GeV/c is investigated. The muon pairs and ..gamma.. rays were recorded with a wide-aperture magnetic spectrometer with a hodoscopic ..gamma.. detector. A distinct peak, corresponding to a hitherto unobserved eta..--> mu../sup +/..mu../sup -/..gamma.. decay, is separated in the mass spectrum. The relative probability of the observed decay was found to be 1.5 x 10/sup -4/.

• Research Organization: Institute of High-Energy Physics, Serpukhov
• OSTI ID: 6026271
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 28:6; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BASIC INTERACTIONS
BOSONS
DECAY
ELECTROMAGNETIC PARTICLE DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
ETA MESONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
LEPTONIC DECAY
MASS SPECTRA
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
MESONS
MUON PAIRS
PARTICLE DECAY
PARTICLE INTERACTIONS
PION MINUS-PROTON INTERACTIONS
PION-NUCLEON INTERACTIONS
PION-PROTON INTERACTIONS
PSEUDOSCALAR MESONS
RADIATIVE DECAY
SPECTRA
WEAK INTERACTIONS
WEAK PARTICLE DECAY