Constraints on new physics from the quark mixing unitarity triangle
UTfit Collaboration, M. Bona, M. Ciuchini, E. Franco, V. Lubicz, G. Martinelli, F. Parodi, M. Pierini, P. Roudeau, C. Schiavi, L. Silvestrini, A. Stocchi, V. Vagnoni
Abstract
The status of the Unitarity Triangle beyond the Standard Model including the most recent results on Delta ms, 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 Bs sector. We present the allowed ranges of New Physics contributions to Delta F=2 processes, and of the time-dependent CP asymmetry in Bs to J/Psi phi decays.
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