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A resonance search has been made in the D^*+/- p^-/+ invariant-mass spectrumwith the ZEUS detector at HERA using an integrated luminosity of 126 pb^-1. Thedecay channels D^*+ -> D^0 pi^+_s -> (K^- pi^+) pi^+_s and D^*+ -> D^0 pi^+_s-> (K^- pi^+ pi^+ pi^-) pi^+_s (and the corresponding antiparticle decays) wereused to identify D^*+/- mesons. No resonance structure was observed in theD^*+/- p^-/+ mass spectrum from more than 60000 reconstructed D^*+/- mesons.The results are not compatible with a report of the H1 Collaboration of acharmed pentaquark, Theta^0_c.Comment: 22 pages, 7 figures, 1 table; minor text revisions; 2 references  adde

Search for a narrow charmed baryonic state decaying to $D^{\ast \pm} p^\mp$ in ep collisions at HERA