Search for Strange-Pentaquark Production in e{sup +}e{sup -} Annihilation at {radical}(s)=10.58 GeV

Journal Article · Fri Jul 22 00:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.042002· OSTI ID:20696471

Aubert, B; Barate, R; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, J P; Poireau, V; Tisserand, V; Zghiche, A ^[1]; Grauges-Pous, E ^[2]; Palano, A; Pompili, A ^[3]; Chen, J C; Qi, N D; Rong, G; Wang, P; Zhu, Y S ^[4]; Eigen, G; Ofte, I; Stugu, B ^[5]

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1. Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
2. IFAE, Universitat Autonoma de Barcelona, E-08193 Bellaterra, Barcelona (Spain)
3. Dipartimento di Fisica and INFN, Universita di Bari, I-70126 Bari (Italy)
4. Institute of High Energy Physics, Beijing 100039 (China)
5. Institute of Physics, University of Bergen, N-5007 Bergen (Norway); and others

We search for strange-pentaquark states that have been previously reported by other experiments--the {theta}(1540){sup +}, {xi}{sub 5}(1860){sup --}, and {xi}{sub 5}(1860){sup 0}--in 123 fb{sup -1} of data recorded with the BABAR detector at the PEP-II e{sup +}e{sup -} storage ring. We find no evidence for these states and set 95% confidence level upper limits on the number of {theta}(1540){sup +} and {xi}{sub 5}(1860){sup --} pentaquarks produced per e{sup +}e{sup -} annihilation into qq and per {upsilon}(4S) decay. For qq events the {theta}(1540){sup +} [{xi}{sub 5}(1860){sup --}] limit is about 8 [4] times lower than the rates measured for ordinary baryons of similar mass.

• OSTI ID: 20696471
• Journal Information: Physical Review Letters, Vol. 95, Issue 4; Other Information: DOI: 10.1103/PhysRevLett.95.042002; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
ELECTRON-POSITRON INTERACTIONS
GEV RANGE 10-100
INCLUSIVE INTERACTIONS
MASS
PARTICLE DECAY
RESONANCE
RESONANCE PARTICLES
STORAGE RINGS
XI PARTICLES