Published January 1984 | Version v1
Report Restricted

Observation of structures in nn and nnπ+ invariant mass spectra

Creators

  • 1. Institute of Nuclear Problems, Warsaw (Poland)
  • 2. Warsaw Univ. (Poland). Inst. Fizyki Doswiadczalnej

Description

The dp->(pπ++missing mass) reaction was studied at 3.3 GeV/c deuteron momentum in the hydrogen bubble chamber. A sample enriched in ''non-spectator'' events shows two bumps in the missing mass distribution at around 2.030 and 2.140 GeV. The nnπ+ distribution exhibits a signal at 2.390 GeV. All peaks have a width of about 50-60 MeV. None of the background processes considered was capable of simulating the observed enhancements. (orig.)

Availability note (English)

MF available from INIS under the Report Number.

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Additional details

Publishing Information

Imprint Pagination
15 p.
Report number
GSI--84-7(prepr.)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
15045793
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
BREAKUP REACTIONS; DEUTERON REACTIONS; DIBARYON RESONANCES; EXPERIMENTAL DATA; GEV RANGE 01-10; HADRONIC PARTICLE DECAY; HYDROGEN 1 TARGET; INELASTIC SCATTERING; INTEGRAL CROSS SECTIONS; MASS SPECTRA; MISSING MASS; NEUTRON SPECTRA; NEUTRONS; PARTICLE PRODUCTION; PARTICLE WIDTHS; PIONS PLUS; PROTONS; QUASI-ELASTIC SCATTERING; REST MASS
Descriptors DEC
BARYON RESONANCES; BARYONS; BOSONS; CATIONS; CHARGED PARTICLES; CROSS SECTIONS; DATA; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; INFORMATION; INTERACTIONS; IONS; MASS; MESONS; NUCLEAR REACTIONS; NUCLEONS; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PROPERTIES; PIONS; PSEUDOSCALAR MESONS; RESONANCE PARTICLES; SCATTERING; SPECTRA; TARGETS