We search for strange-pentaquark states that have been previously reported by other experiments-the Theta(1540)(+), Xi(5)(1860)(--), and Xi(5)(1860)(0)-in 123 fb(-1) of data recorded with the BABAR detector at the PEP-II e(+)e(-) storage ring. We find no evidence for these states and set 95% confidence level upper limits on the number of Theta(1540)(+) and Xi(5)(1860)(--) pentaquarks produced per e(+)e(-) annihilation into q (q) over bar and per Upsilon(4S) decay. For q (q) over bar events the Theta(1540)(+) [Xi(5)(1860)(--)] limit is about 8 [4] times lower than the rates measured for ordinary baryons of similar mass.
Titolo: | Search for strange-pentaquark production in e(+)e(-) annihilation at root s=10.58 GeV RID A-8798-2012 RID C-2728-2008 RID C-5223-2009 RID C-5719-2008 RID D-1055-2009 RID A-2675-2009 | |
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Data di pubblicazione: | 2005 | |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevLett.95.042002 | |
Handle: | http://hdl.handle.net/11384/4374 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |