Published May 1982 | Version v1
Journal article Metadata-only

The nucleon-antinucleon interaction with bound state formation

Creators

  • 1. Rio de Janeiro Univ. (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia
  • 2. Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro

Description

The reaction pp sup(-) → π-X is studied in which X is supposed to be a bound state of the nucleon-antinucleon system. The interest was to obtain some qualitative and quantitative information about the differential cross-section of this reaction when the final pion is in the forward direction. It is concluded that for M sub(X) near threshold the contribution from the one-pion exchange graph with a δ-resonance as an intermediate state is more important than the contribution of the one nucleon exchange graph. (Author)

Abstract (Portuguese)

Faz-se um estudo da reacao pp sup(-) → π-X onde X e suposto um estado ligado do sistema nucleon-antinucleon. Visa-se obter informacoes qualitativas e quantitativas sobre a secao de choque diferencial desta reacao no caso em que o pion final esta na direcao em frente. Os resultados obtidos para massas de X muito proximas ao limiar mostram que a contribuicao do grafico com formacao de ressonancia δ no estado intermediario e maior do que a contribuicao do grafico simples. (Autor)

Additional details

Additional titles

Original title (Portuguese)
A interacao nucleon antinucleon com formacao de estado ligado

Publishing Information

Journal Title
Rev. Bras. Fis.
Journal Issue
vol. especial
Series
Rev. Bras. Fis.
ISSN
0374-4922

Conference

Title
4. National Meeting on Intermediate Energy Physics.
Dates
7-9 May 1982.
Place
Rio de Janeiro, RJ (Brazil).

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
14804392
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BOUND STATE; DELTA-1236 RESONANCES; DIFFERENTIAL CROSS SECTIONS; PIONS MINUS; PROTON-ANTIPROTON INTERACTIONS
Descriptors DEC
ANTIMATTER; ANTIMESONS; ANTIPARTICLES; BARYON RESONANCES; BARYON-BARYON INTERACTIONS; BARYONS; BOSONS; CROSS SECTIONS; ELEMENTARY PARTICLES; FERMIONS; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; MATTER; MESONS; N*RESONANCES; NUCLEON-ANTINUCLEON INTERACTIO; PARTICLE INTERACTIONS; PIONS; PSEUDOSCALAR ANTIMESONS; PSEUDOSCALAR MESONS; RESONANCE PARTICLES