Data: |
2005 |
Resum: |
We search for strange pentaquark states that have been previously reported by other experiments -- the Θ(1540)+, Ξ5(1860)−−, and Ξ5(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 Θ(1540)+ and Ξ5(1860)−− pentaquarks produced per e+e− annihilation event that are about eight and four times lower than the rates measured for ordinary baryons of similar mass. |
Drets: |
Tots els drets reservats. |
Llengua: |
Anglès |
Document: |
Article ; Versió publicada |
Matèria: |
Upsilon meson resonances ;
Electron-positron inclusive interactions ;
Hyperon resonances ;
Meson decay |
Publicat a: |
Physical review letters, Vol. 95, Issue 4 (July 2005) , p. 042002-1-042002-7, ISSN 1079-7114 |