Published October 7, 2005
| Version v1
Journal article
Search for Exotic Baryons in 800 GeV pp→pΞ±π±X Reactions
Creators
- 1. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
- 2. Universidad de Guanajuato, 37150 Leon, Guanajuato (Mexico)
- 3. Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
- 4. Columbia University, Nevis Laboratory, Irvington, New York 10533 (United States)
- 5. University of Massachusetts, Amherst, Massachusetts 01003 (United States)
Description
We report the results of a high-statistics, sensitive search for narrow baryon resonances decaying to Ξ-π-, Ξ-π+, Ξ+π-, and Ξ+π+. The only resonances observed are the well known Ξ0(1530) and Ξ0(1530). No evidence is found for the states near 1862 MeV, previously reported by NA49 [Phys. Rev. Lett. 92, 042003 (2003)]. At the 95% confidence level, we find the upper limit for the production of a Gaussian enhancement with σ=7.6 MeV in the Ξ-π- effective mass spectrum to be 0.3% of the number of observed Ξ0(1530)→Ξ-π+. We find similarly restrictive upper limits for an enhancement at 1862 MeV in the Ξ-π+, Ξ+π-, and Ξ+π+ mass spectra
Additional details
Identifiers
- DOI
- 10.1103/PhysRevLett.95.152001;
- arXiv
- arXiv:hep-ex/0507056v2;
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 95
- Journal Issue
- 15
- Journal Page Range
- p. 152001-152001.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37012450
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- EFFECTIVE MASS; GEV RANGE 01-10; GEV RANGE 100-1000; HADRONIC PARTICLE DECAY; INCLUSIVE INTERACTIONS; MASS SPECTRA; PIONS MINUS; PIONS PLUS; PROTON-PROTON INTERACTIONS; RESONANCE PARTICLES; XI MINUS PARTICLES; XI NEUTRAL PARTICLES; XI-1530 BARYONS
- Descriptors DEC
- BARYON-BARYON INTERACTIONS; BARYONS; BOSONS; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRON-HADRON INTERACTIONS; HADRONS; HYPERONS; INTERACTIONS; MASS; MESONS; NUCLEON-NUCLEON INTERACTIONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PIONS; PROTON-NUCLEON INTERACTIONS; PSEUDOSCALAR MESONS; SPECTRA; STRANGE PARTICLES; XI BARYONS; XI PARTICLES
Optional Information
- Notes
- (c) 2005 The American Physical Society