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arXiv · 0806.3837

Testing the Littlest Higgs Model with T-parity at the Large Hadron Collider

Shigeki Matsumoto·Takeo Moroi·Kazuhiro Tobe
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Abstract

In the framework of the littlest Higgs model with T-parity (LHT), we study the production processes of T-even (T_+) and T-odd (T_-) partners of the top quark at the Large Hadron Collider (LHC). We show that the signal events can be distinguished from the standard-model backgrounds, and that information about mass and mixing parameters of the top partners can be measured with relatively good accuracies. With the measurements of these parameters, we show that a non-trivial test of the LHT can be performed. We also discuss a possibility to reconstruct the thermal relic density of the lightest T-odd particle A_H using the LHC results, and show that the scenario where A_H becomes dark matter may be checked.

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Shigeki Matsumoto, Takeo Moroi, Kazuhiro Tobe. 2008-06-24. Testing the Littlest Higgs Model with T-parity at the Large Hadron Collider. https://doi.org/10.1103/physrevd.78.055018

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