Published March 7, 1988
| Version v1
Journal article
Evidence against broad dibaryons
Description
Spin-correlation parameters A/sub L//sub L/, A/sub S//sub L/, A/sub N//sub L/, A/sub N/0, A/sub S/0, A/sub L/0, and A0/sub L/ have been measured for the reaction pp→npπ+ at 492, 576, 643, 729, and 796 MeV. An isobar analysis determines magnitudes and phases of partial waves up to NN 3F3. For the amplitude NN(1D2)→NΔ(5S2), the phase shows a strong threshold enhancement in the NΔ channel, dropping from 44.40 +- 4.40 at 492 MeV to 11.90 +- 1.90 at 796 MeV. Other phases show little activity. Broad dibaryons are conclusively ruled out in 1D2, 3F3, and 3P2 in this energy range
Additional details
Publishing Information
- Journal Title
- Phys. Rev. Lett.
- Journal Volume
- 60
- Journal Issue
- 10
- Series
- Phys. Rev. Lett.
- Journal Page Range
- 901-904
- ISSN
- 0031-9007
- CODEN
- PRLTA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 19065455
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ANGULAR DISTRIBUTION; COINCIDENCE SPECTROMETRY; DIBARYONS; LAMPF LINAC; MEV RANGE 100-1000; MULTIWIRE PROPORTIONAL CHAMBER; NEUTRONS; NUCLEAR MAGNETIC RESONANCE; PARTIAL WAVES; PARTICLE PRODUCTION; PIONS PLUS; PROTON-PROTON INTERACTIONS; PROTONS; SPIN
- Descriptors DEC
- ACCELERATORS; ANGULAR MOMENTUM; BARYON-BARYON INTERACTIONS; BARYONS; BOSONS; CATIONS; CHARGED PARTICLES; COINCIDENCE METHODS; COUNTING TECHNIQUES; DISTRIBUTION; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; HADRON-HADRON INTERACTIONS; HADRONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; INTERACTIONS; IONS; LINEAR ACCELERATORS; MAGNETIC RESONANCE; MEASURING INSTRUMENTS; MESON FACTORIES; MESONS; MEV RANGE; NUCLEON-NUCLEON INTERACTIONS; NUCLEONS; PARTICLE INTERACTIONS; PARTICLE PROPERTIES; PIONS; PROPORTIONAL COUNTERS; PROTON-NUCLEON INTERACTIONS; PSEUDOSCALAR MESONS; RADIATION DETECTORS; RESONANCE