Study of narrow baryonic pentaquark candidates with the ZEUS detector at HERA
Uri Karshon
Abstract
The three pentaquark candidates Theta+(1530), Xi(1862) and Theta0c(3100) have been studied in ep collisions at a centre-of-mass energy sqrts=300-318 GeV using the full luminosity of the HERA-I data. Searches for narrow baryonic states in the decay channels K0s p, K+ p, Xi- pi+-, anti-XI+ pi+- and D*+-p-+ are reported. The results support the existence of a narrow resonance decaying into K0s p and K0s anti-p, consistent with the Theta(1530) state. No signals are seen in the K+ p, Xi- pi+-, anti-Xi+ pi+- and D*+-p-+ channels.
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