Littlest Higgs Model with T-Parity Confronting the New Data on D^0-\bar D^0 Mixing

Details Littlest Higgs Model with T-Parity Confronting the New Data on D^0-\bar D^0 Mixing Littlest Higgs Model with T-Parity Confronting the New Data on D^0-\bar D^0 Mixing

2007-03-23

arxiv.org/abs/hep-ph/0703254v3

Phys.Lett.B657:81-86,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 5 figures, 1 table. Note added on the omitted term in Z-penguin contribution. For an updated analysis see arXiv:0906

Scientific paper

10.1016/j.physletb.2007.10.008

Motivated by the first experimental evidence of meson oscillations in the D system, we study D^0 - \bar D^0 mixing in the Littlest Higgs model with T-parity, we investigate its role in constraining the model parameters and its impact on the most interesting flavour observables. We find that the experimental data are potentially strongly constraining but at present limited by large theoretical uncertainties in the long-distance Standard Model contribution to D^0 - \bar D^0 mixing.

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