Leading charm in hadron-nucleus interactions in the intrinsic charm model
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چکیده
Leading charm hadrons produced in hadron-nucleus interactions cannot be adequately described within the parton fusion model. Recent results on charm baryon production in X A interactions at 330 GeV with the WA89 detector disagree with fusion predictions. Intrinsic heavy quark pairs in the Z (dds) wavefunction provide a simple mechanism for producing fast charm hadrons. We calculate leading charm baryon production from X-, and p projectiles in a two component model combining parton fusion with intrinsic charm. Final state D , ~ , ~"~+, and A+~ do' /dxr distributions and D / D +, D T / D + and A+~/-A+~ asymmetries are compared to WA89 data. Predictions are made for 650 GeV X A and ~'-A interactions in the SELEX detector at Fermilab and for 800 GeV pA interactions. PACS: 12.38.Bx; 13.75.Ev; 14.20.Lg; 14.40.Lb
منابع مشابه
Leading Charm in Hadron - Nucleus Interactions in the Intrinsic Charm Model 1
Leading charm hadrons produced in hadron-nucleus interactions cannot be adequately described within the parton fusion model. Recent results on charm baryon production in Σ − A interactions at 330 GeV with the WA89 detector disagree with fusion predictions. Intrinsic heavy quark pairs in the Σ − (dds) wavefunction provide a simple mechanism for producing fast charm hadrons. We calculate leading ...
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