Search for Pentaquarks with HERA-B

Details Search for Pentaquarks with HERA-B Search for Pentaquarks with HERA-B

2005-04-20

arxiv.org/abs/hep-ex/0504038v1

Acta Phys.Polon. B36 (2005) 2223-2232

Physics

High Energy Physics

High Energy Physics - Experiment

9 pages, 6 figures, write-up of talk presented at Cracow Epiphany Conference on Hadron Spectroscopy 2005

Scientific paper

A large data set of proton-nucleus collisions at sqrt(s) =41.6 GeV has been searched for Theta+ and Xi(1862) pentaquark candidates. In 2x10**8 inelastic events we find no evidence for narrow signals (sigma=5 MeV/c**2) in the Theta+ --> pK0s and Xi--(1862) --> Xi- pi- channels. Upper limits on production cross sections at mid-rapidity and on ratios of production cross sections to those of well established resonances are presented.

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