Published 1994 | Version v1
Report Open

Observation of two enhancements in M(π-pp) in the reaction pd→π-ppp at 1 GeV

Creators

  • 1. Surrey Univ., Guildford (United Kingdom). Dept. of Physics
  • 2. Soltan Inst. for Nuclear Studies, Otwock-Swierk (Poland)

Description

The reaction pd→π-ppp has been investigated in a line reversed hydrogen bubble chamber experiment using 3.3 GeV/c deuteron beam. The observed spectra are very well reproduced by a parameter free model based on impulse approximation. When kinematical cuts are introduced the effective mass distribution of the pion and two slowest protons M(π-pp)exhibits two narrow enhancements at 2199 MeV/c2 and 2258 MeV/c2 which are not accounted for by our model and might be considered as candidates for dibaryonic resonances. (author). 11 refs, 3 figs

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MF available from INIS under the Report Number.

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Additional details

Publishing Information

Imprint Pagination
8 p.
ISSN
1232-5309
Report number
SINS--6/6

INIS

Country of Publication
Poland
Country of Input or Organization
Poland
INIS RN
27017211
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
DIBARYONS; GEV RANGE 01-10; MISSING-MASS SPECTRA; PIONS MINUS; PROTON REACTIONS; PROTONS
Descriptors DEC
BARYON REACTIONS; BARYONS; BOSONS; CATIONS; CHARGED PARTICLES; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRON REACTIONS; HADRONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; IONS; MESONS; NUCLEAR REACTIONS; NUCLEON REACTIONS; NUCLEONS; PIONS; PSEUDOSCALAR MESONS; SPECTRA