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arXiv · hep-ex/0409033

Search for a narrow charmed baryonic state decaying to D^*+/- p^-/+ in ep collisions at HERA

ZEUS Collaboration
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Abstract

A resonance search has been made in the D^*+/- p^-/+ invariant-mass spectrum with the ZEUS detector at HERA using an integrated luminosity of 126 pb^-1. The decay 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) were used to identify D^*+/- mesons. No resonance structure was observed in the D^*+/- p^-/+ mass spectrum from more than 60000 reconstructed D^*+/- mesons. The results are not compatible with a report of the H1 Collaboration of a charmed pentaquark, Theta^0_c.

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ZEUS Collaboration. 2004-10-28. Search for a narrow charmed baryonic state decaying to D^*+/- p^-/+ in ep collisions at HERA. https://doi.org/10.1140/epjc%2Fs2004-02042-9

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