Charm-sea Contribution to High-p_T ψProduction at the Fermilab Tevatron

Abstract

The direct production of $J/\psi ({\psi }^{\prime })$ at large transverse momentum, $p_T\gg M_{J/\psi }$, at the Fermilab Tevatron is revisited. It is found that the sea-quark initiated processes dominate in the high-$p_T$ region within the framework of color-singlet model, which is not widely realized. We think this finding is enlightening for further investigation on the charmonium production mechanism.

Conclusions not changed, to appear in J. of Phys. G

References in corpus (4)

• Measurement of J/Psi and Psi(2S) Polarization in ppbar Collisions at sqrt(s) = 1.8 TeV
• Treatment of Heavy Quarks in Deeply Inelastic Scattering
• Towards a solution of the charmonium production controversy: k_t-factorization versus color octet mechanism
• Polarizations of J/ψand ψ' in hadroproduction at Tevatron in the k_t factorization approach

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