Dark-matter pair production at the ILC in the littlest Higgs model with <I>T</I>-parity

QIAO Qing-Peng; XU Bin

doi:10.1088/1674-1137/37/3/033103

Chinese Physics C> 2013, Vol. 37> Issue(3) : 033103 DOI: 10.1088/1674-1137/37/3/033103

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

QIAO Qing-Peng ^, ,
XU Bin

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Abstract：
In the littlest Higgs model with T-parity, the heavy photon (A_H) is supposed to be a possible dark matter (DM) candidate. The direct proof of the validity of this model is to produce the heavy photon at an accelerator. In this paper, we study the production rate of e⁺e^-→A_HA_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 10^-1fb level at some parameter space, so this could be a good chance to observe the heavy photon via the pair production process with high luminosity at the ILC (500 fb^-1). We know that DM is composed of weakly interacting massive particles, so the interactions with standard model particles are weak. How to detect heavy photons at a collider and distinguish them from other DM candidates are discussed in the nal section of the paper.

References

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QIAO Qing-Peng and XU Bin. Dark-matter pair production at the ILC in the littlest Higgs model with T-parity[J]. Chinese Physics C, 2013, 37(3): 033103. doi: 10.1088/1674-1137/37/3/033103

QIAO Qing-Peng and XU Bin. Dark-matter pair production at the ILC in the littlest Higgs model with T-parity[J]. Chinese Physics C, 2013, 37(3): 033103. doi: 10.1088/1674-1137/37/3/033103 shu

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Received: 2012-04-27
Revised: 2012-09-12

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Corresponding author: QIAO Qing-Peng,

Received Date: 2012-04-27

Accepted Date: 2012-09-12

Available Online: 2013-03-05

Abstract: In the littlest Higgs model with T-parity, the heavy photon (A_H) is supposed to be a possible dark matter (DM) candidate. The direct proof of the validity of this model is to produce the heavy photon at an accelerator. In this paper, we study the production rate of e⁺e^-→A_HA_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 10^-1fb level at some parameter space, so this could be a good chance to observe the heavy photon via the pair production process with high luminosity at the ILC (500 fb^-1). We know that DM is composed of weakly interacting massive particles, so the interactions with standard model particles are weak. How to detect heavy photons at a collider and distinguish them from other DM candidates are discussed in the nal section of the paper.

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

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

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