Study of coherent inelastic diffraction of a 40-GeV/c. pi. /sup -/ meson in a silicon target-detector

Journal Article · Sun Jun 01 04:00:00 EDT 1986 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:7167019

Vegni, G; Vishyakov, V V; Zai-brevemidoroga, O A; Ivan'shin, Y I; Lytkin, L K; Manfredi, P F; Palombo, F; Sala, A; Sychkov, S Y; Frabetti, P L; others, and

In study of the diffraction dissociation of ..pi../sup -/ mesons into a 3..pi.. system at a beam momentum 40 GeV/c in the MIS installation at the Joint Institute for Nuclear Research, reactions have been separated into coherent and incoherent types on the basis of measurement of the energy deposition by the recoil nucleus in a silicon multilayer target-detector. A partial-wave analysis has been carried out for separated coherent events. The dependences of the intensities and relative phases of the partial waves on the mass of the 3..pi.. system confirm the data obtained by us previously on observation of resonance states in the waves 0/sup -/S(..pi..' and ..pi..''), 1/sup +/S(A/sub 1/), 2/sup -/S(A/sub 3/), and 1/sup +/D(A/sup '//sub 1/). The data obtained in the present work indicate that the differential cross section for incoherent production of a 3..pi.. system approaches zero as t'..-->..0.

• Research Organization: Joint Institute for Nuclear Research
• OSTI ID: 7167019
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 43:6; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645103* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Strong Interactions & Baryon & Meson Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CHARGED-PARTICLE REACTIONS
COHERENT PRODUCTION
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DIFFRACTION MODELS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
GEV RANGE
GEV RANGE 10-100
HADRON REACTIONS
HADRONS
MATHEMATICAL MODELS
MESON REACTIONS
MESONS
NUCLEAR REACTIONS
PARTIAL WAVES
PARTICLE MODELS
PARTICLE PRODUCTION
PION MINUS REACTIONS
PION REACTIONS
PIONS
PSEUDOSCALAR MESONS
SEMIMETALS
SILICON