Search for Strange Pentaquark Production in e{sup +}e{sup -} Annihilations at {radical}s=10.5 GeV and in {Upsilon}(4S) Decays

Technical Report · Mon Aug 16 00:00:00 EDT 2004

DOI:https://doi.org/10.2172/829744· OSTI ID:829744

Aubert, B ^[1]

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1. SLAC

The authors present a preliminary inclusive search for strange pentaquark production in e{sup +}e{sup -} interactions at a center-of-mass energy of 10.58 GeV using 123 fb{sup -1} of data collected with the BABAR detector. They look for the states that have been reported previously: the {Theta}{sup +}(1540), interpreted as a udud{bar s} state; and the {Xi}{sup --}(1860) and {Xi}{sup 0}(1860), candidate dsds{bar u} and uss(u{bar u} + d{bar d}) states, respectively. In addition they search for other members of the antidecuplet and corresponding octet to which these states are thought to belong. They find no evidence for the production of such states and set preliminary limits on their production cross sections as functions of c.m. momentum. The corresponding limits on the {Theta}{sup +}(1540) and {Xi}{sup --}(1860) rates per e{sup +}e{sup -} --> q{bar q} event are well below the rates measured for ordinary baryons of similar mass.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (US)
• Sponsoring Organization: USDOE Office of Science (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 829744
• Report Number(s): SLAC-PUB-10598
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
CROSS SECTIONS
PRODUCTION