Effects of Littlest Higgs model in rare D meson decays

Details Effects of Littlest Higgs model in rare D meson decays Effects of Littlest Higgs model in rare D meson decays

2005-11-04

arxiv.org/abs/hep-ph/0511048v2

Phys.Rev. D73 (2006) 054026

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 3 figures; new constraint on scale f taken into account and effects on charm meson decays recalculated

Scientific paper

10.1103/PhysRevD.73.054026

A tree-level flavor changing neutral current in the up-like quark sector appears in one of the variations of the Littlest Higgs model. We investigate the effects of this coupling in the D+ -> pi+ l+ l- and D0 -> rho0 l+ l- decays, which are the most appropriate candidates for the experimental studies. However, the effects are found to be too small to be observed in the current and the foreseen experimental facilities. These decays are still dominated by the standard model long-distance contributions, which are reevaluated based on the new experimental input.

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