Implications of the Little Higgs Dark Matter and T-odd fermions

Chuan Ren Chen, Ming Che Lee, Ho Chin Tsai

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We study the phenomenology of dark matter in the Littlest Higgs model with T-parity after the discovery of Higgs boson. We analyze the relic abundance of dark matter, focusing on the effects of coannihilaitons with T-odd fermions. After determining the parameter space that predicts the correct relic abundance measured by WMAP and Planck collaborations, we evaluate the elastic scattering cross section between dark matter and nucleon. In comparison with experimental results, we find that the lower mass of dark matter is constrained mildly by LUX 2013 while the future XENON experiment has potential to explore most of the parameter space for both T-odd lepton and T-odd quark coannihilation scenarios. We also study the collider signatures of T-odd fermion pair production at the LHC. Even though the production cross sections are large, it turns out very challenging to search for these T-odd fermions directly at the collider because the visible charged leptons or jets are very soft. Furthermore, we show that, with an extra hard jet radiated out from the initial state, the T-odd quark pair production can contribute significantly to mono-jet plus missing energy search at the LHC.

Original languageEnglish
Article number074
JournalJournal of High Energy Physics
Volume2014
Issue number6
DOIs
Publication statusPublished - 2014 Jun

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dark matter
fermions
pair production
leptons
quarks
phenomenology
Higgs bosons
scattering cross sections
parity
elastic scattering
signatures
cross sections
energy

Keywords

  • Phenomenological Models

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Implications of the Little Higgs Dark Matter and T-odd fermions. / Chen, Chuan Ren; Lee, Ming Che; Tsai, Ho Chin.

In: Journal of High Energy Physics, Vol. 2014, No. 6, 074, 06.2014.

Research output: Contribution to journalArticle

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