Search for Strange-Pentaquark Production in e+e- Annihilation at sqrt{s}=10.58 GeV and in Upsilon(4S) Decays

Technical Report · Wed Feb 02 00:00:00 EST 2005

DOI:https://doi.org/10.2172/839758· OSTI ID:839758

Aubert, B

We search for strange pentaquark states that have been previously reported by other experiments --the {Theta}(1540){sup +}, {Xi}(1860){sup 2}, 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 2} pentaquarks produced per e{sup +}e{sup -} annihilation into q{bar q} and per {Upsilon}(4S) decay. For q{bar q} events these limits are about eight and four times lower, respectively, than the rates measured for ordinary baryons of similar mass.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 839758
• Report Number(s): SLAC-PUB-10992; TRN: US0503479
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ANNIHILATION
BARYONS
DECAY
PRODUCTION
STORAGE RINGS