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arXiv · 0803.0659

First Evidence of New Physics in b <--> s Transitions

The UTfit Collaboration·M. Bona·M. Ciuchini·E. Franco·V. Lubicz·G. Martinelli·F. Parodi·M. Pierini·C. Schiavi·L. Silvestrini·V. Sordini·A. Stocchi·V. Vagnoni
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Abstract

We combine all the available experimental information on Bs mixing, including the very recent tagged analyses of Bs to J/Psi phi by the CDF and D0 collaborations. We find that the phase of the Bs mixing amplitude deviates more than 3 sigma from the Standard Model prediction. While no single measurement has a 3 sigma significance yet, all the constraints show a remarkable agreement with the combined result. This is a first evidence of physics beyond the Standard Model. This result disfavours New Physics models with Minimal Flavour Violation with the same significance.

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The UTfit Collaboration, M. Bona, M. Ciuchini, E. Franco, V. Lubicz, G. Martinelli, F. Parodi, M. Pierini, C. Schiavi, L. Silvestrini, V. Sordini, A. Stocchi, V. Vagnoni. 2008-03-05. First Evidence of New Physics in b <--> s Transitions. https://doi.org/10.1186/1754-0410-3-6

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