Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-05-18
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, 5 figures
Scientific paper
In the Littlest Higgs model with T-parity, the heavy photon ($A_{H}$) is supposed to be a possible dark matter (DM) candidate. A direct proof of validity of the model is to produce the heavy photon at accelerator. In this paper, we study the production rate of $ e^ + e^ - \to A_{H}+A_{H}$ at the international $e^ + e^ -$ linear collider (ILC) in the Littlest Higgs model with T-parity and show the distributions of the transverse momenta of $A_{H}$. The numerical results indicate that the heavy photon production rate could be reach several $fb$ at some parameter space, so it can be good chance to observe the heavy photon via the pair production process with the high luminosity at the ILC (500 $fb^{-1}$) . We know that DM is composed of weakly-interacting massive particles (WIMPs), so the interactions with standard model (SM) particles are weakness, how to detect heavy photon at a collider and distinguish it from other DM candidates were simply discussed at the final sector of the paper.
Qiao Qing-Peng
Xu Bin
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