Published June 1996
| Version v1
Journal article
A signal of a narrow πNN resonance in pp→ppπ-π+
Creators
- Brodowski, W.1
- Bilger, R.1
- Calen, H.2
- Clement, H.1
- Ekstroem, C.3
- Foehl, K.1
- Fransson, K.2
- Gustafsson, L.2
- Haeggstroem, S.2
- Hoeistad, B.2
- Johansson, A.2
- Johansson, T.2
- Kilian, K.4
- Kullander, S.2
- Kupsc, A.5
- Kurz, G.1
- Marciniewski, P.5
- Morosov, B.6
- Moehn, J.2
- Moertsell, A.2
- Oelert, W.4
- Renken, V.4
- Ruber, R.2
- Schepkin, M.G.7
- Siodlaczek, U.1
- Stepaniak, J.5
- Sukhanov, A.2, 6
- Turowiecki, A.8
- Wagner, G.J.1
- Wilhelmi, Z.8
- Zabierowski, J.9
- Zernov, A.6
- Zlomanczuk, J.2, 8
- 1. Tuebingen Univ. (Germany). Physikalisches Inst.
- 2. Uppsala Univ. (Sweden). Dept. of Radiation Sciences
- 3. Uppsala Univ. (Sweden). Svedberg Lab.
- 4. Kernforschungsanlage Juelich GmbH (Germany). Inst. fuer Kernphysik
- 5. Institute for Nuclear Studies, Warsaw (Poland)
- 6. Joint Inst. for Nuclear Research, Dubna (Russian Federation)
- 7. Institute of Theoretical and Experimental Physics, Moscow (Russian Federation)
- 8. Warsaw Univ. (Poland). Inst. of Experimental Physics
- 9. Institue for Nucl. Studies, Lodz (Poland)
Description
We report on the first exclusive measurement of the 2π production in NN collisions at Tp=750 MeV using a H2 cluster jet target and the WASA/PROMICE detector at CELSIUS. In the invariant-mass spectrum Mppπ- we observe a narrow peak at 2.063(2) GeV with a 4σ deviation relative to the MC simulations for the conventional nonresonant 2π production process. The finding is in agreement with the hypothesis of a narrow πNN resonance with I(JP)=even (0-), called d', postulated recently to describe the peculiar resonance-like behavior of the pionic double charge exchange on nuclei. (orig.)
Additional details
Publishing Information
- Journal Title
- Zeitschrift fuer Physik. A, Hadrons and Nuclei
- Journal Volume
- 355
- Journal Issue
- 1
- Journal Page Range
- p. 5-8.
- ISSN
- 0939-7922
- CODEN
- ZPAHEX
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 27060720
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- DIBARYONS; EFFECTIVE MASS; EXCLUSIVE INTERACTIONS; EXPERIMENTAL DATA; HADRONIC PARTICLE DECAY; ISOSPIN; MASS SPECTRA; MEV RANGE 100-1000; PAIR PRODUCTION; PARITY; PARTICLE WIDTHS; PIONS MINUS; PIONS PLUS; PROTON-PROTON INTERACTIONS; PROTONS; QUASI-ELASTIC SCATTERING; REST MASS; SPIN
- Descriptors DEC
- ANGULAR MOMENTUM; BARYON-BARYON INTERACTIONS; BARYONS; BOSONS; CATIONS; CHARGED PARTICLES; DATA; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; HADRON-HADRON INTERACTIONS; HADRONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; INFORMATION; INTERACTIONS; IONS; MASS; MESONS; MEV RANGE; NUCLEAR REACTIONS; NUCLEON-NUCLEON INTERACTIONS; NUCLEONS; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PIONS; PROTON-NUCLEON INTERACTIONS; PSEUDOSCALAR MESONS; SCATTERING; SPECTRA