Abstract
H1 Collaboration recently observed the charmed pentaquark. In this short Letter, we point out that the dominant production mechanism for pentaquark consisting of a heavy quark is heavy quark fragmentation. We obtain a crude estimate on the fragmentation probability for charm quark into Θc0, based on the known fragmentation probabilities of charm quark into mesons and baryons: f(c̄→Θc0)≃(2-7)×10-3. Similarly, we also obtain the fragmentation probability for bottom quark into Θb+: f(b̄→ Θb+)≃(5-20)×10-3. We also estimate the prospect of observing Θc0 and Θb+ at HERA, LEP, and Tevatron. © 2004 Elsevier B.V.