Prompt heavy quarkonium production in association with a massive (anti)bottom quark at the LHC

Details Prompt heavy quarkonium production in association with a massive (anti)bottom quark at the LHC Prompt heavy quarkonium production in association with a massive (anti)bottom quark at the LHC

2012-03-05

arxiv.org/abs/1203.0799v2

Phys.Rev.D85:074026,2012

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 11 figures, accepted by Phys.Rev.D

Scientific paper

10.1103/PhysRevD.85.074026

In this work, we investigate the associated production of prompt heavy quarkonium with a massive (anti)bottom quark to leading order in the NRQCD factorization formalism at the LHC. We present numerical results for the processes involving $J/\psi,\chi_{cJ},\Upsilon$ and $\chi_{bJ}$. From our work, we find that the production rates of these processes are quite large, and these processes have the potential to be detected at the LHC. When $p_T$ is smaller than about 10 GeV, the $c\bar{c} [ ^1S_0^{(8)} ]$ state give the main contribution to the $p_T$ distribution of prompt $J/\psi$ with a (anti)bottom quark production. For the process of $pp \to \Upsilon+b(\bar{b})$, the contribution of the CSM is larger than that in the COM at low $p_T$ region. We also investigate the processes of $pp\to \chi_{cJ}+b(\bar{b})$ and $pp \to \chi_{bJ}+b(\bar{b})$, in these processes, the $p_T$ distribution are dominated by the CO Fock state contribution at the large $p_T$ region. These processes provide an interesting signature that could be studied at the LHC, and the measurement of these processes is useful to test the CSM and COM.

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