Dark matter pair production at the ILC in the Littlest Higgs model with T-parity

• Published in: arXiv.org
• Main Authors: Qing-Peng Qiao, Xu, Bin
• Format: Paper
• Language: English
• Published: Ithaca Cornell University Library, arXiv.org 06.10.2012
• Subjects: Dark matter; Luminosity; Mathematical models; Pair production; Parity; Standard model (particle physics); Superconducting supercolliders; Weakly interacting massive particles

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 reach the level of \(10^{-1} fb\) at some parameter space, so it can be a 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 are simply discussed in the final sector of the paper.