ASSOCIATED PRODUCTION OF SINGLE HEAVY T-QUARK IN THE LEFT-RIGHT TWIN HIGGS MODEL AT THE LHC.

The heavy T-quark is one of the most crucial ingredients in the left-right twin Higgs model, which is introduced to cancel the largest contribution of the Standard Model top quark to the Higgs boson mass at one-loop level. In this paper, we study the relevant single heavy T-quark production processes, the 2 → 2 partonic processes of qb → q'T and $qq^\prime \rightarrow \bar{b}T$, the 2 → 3 partonic processes of $q\bar{q}^\prime\rightarrow g\bar{b}T$ and $qg\rightarrow q^\prime\bar{b}T$ at the CERN LHC. Our numerical results show that the 2 → 3 process can be quite important, as its cross-section is about 60% of that for the 2 → 2 process at the LHC. We also show the pT distribution and the rapidity distributions for out-going particles. For the 2 → 3 process, the production rate of the $l^{+}\bar{\nu}_{l}bb\bar{b}\bar{b}j$ final state can be larger than 100 fb with reasonable values of the free parameters. The possible signatures of the heavy T-quark might be detected via the process $pp\rightarrow T\bar{b}+{\rm jet}+X$ at the LHC. [ABSTRACT FROM AUTHOR]