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*+ -→ D0πs + → (K -π+)πs + and D*+ → D0πs + → (K-π+π+π-) πs + (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 60 000 reconstructed D*± mesons. The results are not compatible with a report of the H1 Collaboration of a charmed pentaquark, Θc 0.
Search for a narrow charmed baryonic state decaying to D*+- p-+ in ep collisions at HERA.
DE PASQUALE, Salvatore;
2004-01-01
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*+ -→ D0πs + → (K -π+)πs + and D*+ → D0πs + → (K-π+π+π-) πs + (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 60 000 reconstructed D*± mesons. The results are not compatible with a report of the H1 Collaboration of a charmed pentaquark, Θc 0.File in questo prodotto:
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