Restudy on Dark Matter Time-Evolution in the Littlest Higgs model with T-parity

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dc.creatorQiao, Qing-Peng
dc.creatorTang, Jian
dc.creatorLi, Xue-Qian
dc.date2007-11-21
dc.date2008-11-12
dc.date.accessioned2026-07-07T12:23:16Z
dc.date.available2026-07-07T12:23:16Z
dc.descriptionFollowing previous study, in the Littlest Higgs model (LHM), the heavy photon is supposed to be a possible dark matter candidate and its relic abundance of the heavy photon is estimated in terms of the Boltzman-Lee-Weinberg time-evolution equation. The effects of the T-parity violation is also considered. Our calculations show that when Higgs mass $M_H$ taken to be 300 GeV and don't consider T-parity violation, only two narrow ranges $133<M_{A_{H}}<135$ GeV and $167<M_{A_{H}}<169$ GeV are tolerable with the current astrophysical observation and if $135<M_{A_{H}}<167$ GeV, there must at least exist another species of heavy particle contributing to the cold dark matter. As long as the T-parity can be violated, the heavy photon can decay into regular standard model particles and would affect the dark matter abundance in the universe, we discuss the constraint on the T-parity violation parameter based on the present data. Direct detection prospects are also discussed in some detail.
dc.description13 pages, 11 figures included
dc.identifierhttps://arxiv.org/abs/0711.3254
dc.identifierhttp://arxiv.org/abs/0711.3254
dc.identifierCommun.Theor.Phys.50:1211-1218,2008
dc.identifierdoi:10.1088/0253-6102/50/5/40
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/213931
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleRestudy on Dark Matter Time-Evolution in the Littlest Higgs model with T-parity
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