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

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

2008-03-05

arxiv.org/abs/0803.0659v2

PMC Phys.A3:6,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 2 figures, 2 tables. v2: added a note on more recent Tevatron results

Scientific paper

doi:10.1186/1754-0410-3-6

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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