Possibility of studying the processes. gamma pi --> pi pi. and rho (rho'). --> pi gamma. in the reactions. pi. /sup + -/A. --> pi. /sup + -/. pi. /sup 0/A in nuclei

Journal Article · Wed Nov 01 04:00:00 EST 1978 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6375026

Vanyashin, A V; Zhizhin, E D; Nikitin, Y P

Coherent production of two pions in high-energy collisions of pions with heavy nuclei at small momentum transfers to the nucleus is considered. The contributions from photon and ..omega..-Reggeon exchange are analyzed. The incoherent background is estimated. An expression for the differential cross section which is valid in a wide range of effective masses of the pions produced is obtained. It is shown that for incident-pion energies of 20--50 GeV in the lab frame it is better to extract data on the reaction ..gamma pi --> pi pi.. from the transition ..pi --> pi pi.. in heavy nuclei rather than on protons. The rho- and rho' (1250) -meson production cross sections are estimated and the angles characterizing the distributions of the pion and photon emitted in the ..pi../sup 0/ -meson decay are given.

• Research Organization: Moscow Engineering Physiscs Institute
• OSTI ID: 6375026
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 28:5; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645202 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645207* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. Greater than 1-- (-1987)
653003 -- Nuclear Theory-- Nuclear Reactions & Scattering
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BASIC INTERACTIONS
BOSONS
CHARGED-PARTICLE REACTIONS
COHERENT PRODUCTION
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
EXOTIC RESONANCES
GEV RANGE
GEV RANGE 10-100
HADRON REACTIONS
HADRONS
HEAVY NUCLEI
INTERACTIONS
MESON REACTIONS
MESON RESONANCES
MESONS
NUCLEAR REACTIONS
NUCLEI
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PHOTON-HADRON INTERACTIONS
PHOTON-MESON INTERACTIONS
PION MINUS REACTIONS
PION PLUS REACTIONS
PION REACTIONS
RESONANCE PARTICLES
RHO-1250 RESONANCES
RHO-765 RESONANCES
VECTOR MESONS