A vector-like heavy quark in the Littlest Higgs model

Details A vector-like heavy quark in the Littlest Higgs model A vector-like heavy quark in the Littlest Higgs model

2004-08-31

arxiv.org/abs/hep-ph/0408362v3

JHEP0412:065,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 2 figures; typos added; section 4 changed

Scientific paper

10.1088/1126-6708/2004/12/065

The Littlest Higgs model contains a new vector-like heavy quark in the up sector. There are two interesting features of its existence. One is that it extends the $3\times3$ CKM matrix in the Standard Model to a $4\times3$ matrix and the other is that it allows Z-mediated flavor changing neutral currents at tree level in the up sector but not in the down sector. We examine a few of possible windows in which the Z-mediated flavor changing neutral currents in the Littlest Higgs Model can be tested.

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