Constraints on new physics from the quark mixing unitarity triangle

Details Constraints on new physics from the quark mixing unitarity triangle Constraints on new physics from the quark mixing unitarity triangle

2006-05-19

arxiv.org/abs/hep-ph/0605213v3

Phys.Rev.Lett.97:151803,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 4 figures. v2: numerical error in Delta Gamma_s/Gamma_s corrected. Plots and tables updated. v3: update after ICHEP06

Scientific paper

10.1103/PhysRevLett.97.151803

The status of the Unitarity Triangle beyond the Standard Model including the most recent results on Delta m_s, on dilepton asymmetries and on width differences is presented. Even allowing for general New Physics loop contributions the Unitarity Triangle must be very close to the Standard Model result. With the new measurements from the Tevatron, we obtain for the first time a significant constraint on New Physics in the B_s sector. We present the allowed ranges of New Physics contributions to Delta F=2 processes, and of the time-dependent CP asymmetry in B_s to J/Psi phi decays.

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