Published August 1999 | Version v1
Journal article Metadata-only

Investigation of the nucleon-resonance structure in exclusive reactions of pion-pair production on a proton by real and virtual photons

Creators

  • 1. Istituto Nazionale de Fisica Nucleare, Sezione di Genova, Genova (Italy)
  • 2. Institute of Nuclear Physics, Moscow State University, Vorob'evy gory, Moscow, 119899 (Russian Federation)
  • 3. Institute of Nuclear Physics, Moscow State University, Vorob'evy gory, Moscow, Russia, and Istituto Nazionale de Fisica Nucleare, Sezione di Genova, Genova (Italy)

Description

A phenomenological approach to describing the photo- and electroproduction of pion pairs on a proton has been discussed. Basic quasi-two-particle reactions, γr,vp→π-Δ++ and γr,vp→ρp, have been considered. Relevant calculations have been performed with allowance for all known nucleon resonance states with masses less than 2 GeV. A strong πpΔ form factor have been introduced to compute the contribution of nonresonance mechanisms. The effects of absorption in the initial and final states have been analyzed. The results of the present calculations have been compared with available experimental data

Additional details

Identifiers

URL
https://www.pleiades.online/contents/nuclphys/nuclphys8_99v62cont.htm;

Publishing Information

Journal Title
Physics of Atomic Nuclei
Journal Volume
62
Journal Issue
8
Journal Page Range
p. 1437-1448
ISSN
1063-7788
CODEN
PANUEO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
35069751
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Resource subtype / Literary indicator
Translation, Numerical Data
Descriptors DEI
COMPARATIVE EVALUATIONS; DELTA BARYONS; ELECTROPRODUCTION; EXPERIMENTAL DATA; FORM FACTORS; PAIR PRODUCTION; PHOTON-PROTON INTERACTIONS; PIONS; RESONANCE; THEORETICAL DATA
Descriptors DEC
BARYONS; BASIC INTERACTIONS; BOSONS; DATA; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; EVALUATION; FERMIONS; HADRONS; INFORMATION; INTERACTIONS; MESONS; N*BARYONS; NUMERICAL DATA; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PHOTON-BARYON INTERACTIONS; PHOTON-HADRON INTERACTIONS; PHOTON-NUCLEON INTERACTIONS; PSEUDOSCALAR MESONS

Optional Information

Notes
Translated from Yadernaya Fizika, ISSN 0044-0027, 62, 1522-1534 (August 1999); (c) 1999 MAIK/Interperiodika