Direct gamma-gluon fusion dominates B_c photoproduction in ep collisions, with resolved gluon-gluon contributing O(10%) at low p_T across HERA to EIC energies.
Hadronic production of B_c-mesons
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abstract
On the basis of the exact formulas of QCD perturbation theory and parton model the hadronic production cross-sections for $B_c({B_c}^*)$-mesons ($1^1S_0,1^3S_1,2^1S_0,2^3S_1$-states) are calculated. The method used is the direct calculation of appropriate amplitudes with the help of a FORTRAN program and subsequent Monte-Carlo integration over the phase space and convolution with the structure functions.
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Resolved photoproduction of the $B_c$ meson in electron-proton collisions
Direct gamma-gluon fusion dominates B_c photoproduction in ep collisions, with resolved gluon-gluon contributing O(10%) at low p_T across HERA to EIC energies.