On the hadronic production of $B_c$ and $B_c^*$ mesons

Details On the hadronic production of $B_c$ and $B_c^*$ mesons On the hadronic production of $B_c$ and $B_c^*$ mesons

1996-09-26

arxiv.org/abs/hep-ph/9609483v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, (a PS file), A talk given in the Inauguration Conference of APCTP, at Seoul Korea, Jun, 4-10

Scientific paper

With respect to the two theoretical approaches for estimating the hadronic productions of the mesons $B_c$ and $B_c^*$: the full $\alpha_s^4$ calculation and the fragmentation approximation, with a thorough comparative study a quite remarkable conclusion may be drawn. In hadronic collisions the condition for the applicability of the fragmentation approximation is the transverse momentum $P_T$ of the produced $B_c$ and $B_c^*$ being much greater than the meson masses, and the higher the energy of the relevant subprocess the higher the $P_T$ is requested. The mechanisms for the productions are also clarified. In order to show the resultant differences of the two approaches, newly introduced distribution of the fraction of the $B_c$ (or $B_c^*$) meson energy (a measurable observable) in the center of mass of the subprocess is emphasized.

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