Photonic production of B_c-mesons

Abstract

The cross section of the $\gamma \gamma \to B_c(B_c^{\ast })\bar{b}c$ process is calculated. It is shown that near threshold the pseudoscalar state production is much suppressed with respect to the vector one. At large energies their ratio becaims $\sigma (B_c^{\ast })/sigma(B_c)\sim 4$. The process of heavy quark recombination dominates in the production of $B_c(B_c^{\ast })$ states. The fragmentation process $b\to B_c$ comes to play at high $p_t$ values only, while its contribution will remain nondominant.

Preprint IHEP 94-82

References in corpus (3)

• Z^0 Decay into Charmonium via Charm Quark Fragmentation
• Perturbative QCD Fragmentation Functions for $B_c$ and $B_c^{\ast }$ Production
• $B_c$ Meson Productions Via Induced Gluon Fragmentation

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• Exlusive charmed meson pair production
• Study of the two-body nonleptonic $B_c(2S)$ weak decays with the QCD factorization approach
• Pseudoscalar heavy quarkonium production in heavy ion ultraperipheral collision