Published August 17, 1989 | Version v1
Journal article Metadata-only

Observation of centrally produced θ/f2(1720) in the reaction pp→pf(Kanti K)ps at 300 GeV/c

Creators

  • 1. European Organization for Nuclear Research, Geneva (Switzerland)
  • 2. College de France, 75 - Paris
  • 3. Birmingham Univ. (UK). Dept. of Physics
  • 4. Istituto Nazionale di Fisica Nucleare, Bari (Italy)
  • 5. Bari Univ. (Italy). Dipt. di Fisica
  • 6. Athens Univ. (Greece). Dept. of Nuclear Physics

Description

The K+K- and KS0KS0 systems centrally produced in the reaction pp→pfKanti Kps have been studied at 300 GeV/c incident momentum. Both the K+K- and the KS0KSs0 mass spectra show large resonant production. For the first time in hadron collisions, clear evidence is found for the θ/f2(1720) with parameters m=1713±10 MeV, Γ=181±30 MeV for the K+K- decay mode and m=1706±10 MeV, Γ=104±30 MeV for the KS0KS0 decay mode. A spin analysis of the K+K- spectrum shows that for the θ/f2(1720)JP=2+ is strongly favoured while 0+ and 1- are excluded. (orig.)

Additional details

Publishing Information

Journal Title
Physics Letters, (Section) B
Journal Volume
227
Journal Issue
1
Series
Phys. Lett., B.
Journal Page Range
186-190
ISSN
0370-2693
CODEN
PYLBA

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
20074153
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ANGULAR CORRELATION; ANGULAR DISTRIBUTION; DENSITY MATRIX; EFFECTIVE MASS; EXPERIMENTAL DATA; F2-1525 MESONS; F2-1720 MESONS; GEV RANGE 100-1000; GLUEBALLS; HADRONIC PARTICLE DECAY; KAONS MINUS; KAONS NEUTRAL SHORT-LIVED; KAONS PLUS; MASS SPECTRA; MATRIX ELEMENTS; PAIR PRODUCTION; PARITY; PARTICLE WIDTHS; PROTON-PROTON INTERACTIONS; PROTONS; QUASI-ELASTIC SCATTERING; REST MASS; SPIN; SPIN ORIENTATION
Descriptors DEC
ANGULAR MOMENTUM; BARYON-BARYON INTERACTIONS; BARYONS; BOSONS; CATIONS; CHARGED PARTICLES; CORRELATIONS; DATA; DECAY; DISTRIBUTION; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRON-HADRON INTERACTIONS; HADRONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; INFORMATION; INTERACTIONS; IONS; KAONS; KAONS NEUTRAL; MASS; MATRICES; MESONS; NUCLEAR REACTIONS; NUCLEON-NUCLEON INTERACTIONS; NUCLEONS; NUMERICAL DATA; ORIENTATION; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; PROTON-NUCLEON INTERACTIONS; PSEUDOSCALAR MESONS; QUARKONIUM; SCATTERING; SPECTRA; STRANGE MESONS; STRANGE PARTICLES; STRANGEONIUM; TENSOR MESONS

Optional Information

Collaborations
WA76 Collaboration.