Hadron Spectroscopy in electrons-protons Collisions at HERA

Abstract

Recent results from H1 and ZEUS on searches for exotic baryons in $ep$ collisions at HERA are reviewed. Evidence for the production of the strange pentaquark ${\Theta }^{+}$ and of a narrow anti-charmed baryon decaying to $D^{\ast -}p$ together with negative results of pentaquark searches at HERA are presented.

arXiv commentInvited talk on behalf of H1 and ZEUS collaborations for Lake Louise Winter Institute 2005, Lake Louise, Alberta, Canada, 20-26 Feb 2005