2005/04/20 by Joachim Spengler
Physics and Astronomy · #hep-ex
published as Acta Phys.Polon. B36 (2005) 2223-2232 · 9 pages, 6 figures, write-up of talk presented at Cracow Epiphany Conference on Hadron Spectroscopy 2005
arxiv created 2005/04/20 · arxiv updated 2009/12/01
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.