Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-05-02
Phys.Lett.B666:38-43,2008; Erratum-ibid.B698:323,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pages, 3 figures, Latex
Scientific paper
10.1016/j.physletb.2008.06.055 1
Motivated by the recent precision measurements of the W boson mass and top quark mass, we test the Littlest Higgs model by confronting the prediction of M_W with the current and prospective measurements of M_W and M_t as well as through the correlation among M_W, M_t and Higgs mass. We argue that the current values and accuracy of M_W and M_t measurements tend to favor the Littlest Higgs model over the standard model, although the most recent electroweak data may appear to be consistent with the standard model prediction. In this analysis, the upper bound on the global SU(5) symmetry breaking scale turned out to be 26.3 TeV. We also discuss how the masses of the heavy gauge boson M_B in the Littlest Higgs model can be predicted from the constraints on the model parameters.
Kang Sin Kyu
Kim Chang Sub
Park Jubin
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