Possible evidence for the breakdown of the CKM-paradigm of CP-violation

Abstract

Using primarily experimental inputs for S(B -> psi Ks), Delta M_Bs, Delta M_Bd, BR(B -> tau nu) and epsilon_K along with necessary inputs from the lattice, we find that the measured value of sin(2 beta) is smaller than expectations of the Standard Model by as much as 3.3 sigma, and also that the measured value of the BR(B -> tau nu) seems to be less than the predicted value by about 2.8 sigma. However, through a critical study we show that most likely the dominant source of these deviations is in B_d(s) mixings and in sin(2 beta) and less so in B -> tau nu, and also that the bulk of the problem persists even if input from epsilon_K is not used. The fact that kaon mixing and epsilon_K are not the dominant source of the deviation from the Standard Model has the very important consequence that model independent considerations imply that the scale of the relevant new CP-violating physics is below O(2 TeV), thus suggesting that direct signals of the new particle(s) may well be accessible in collider experiments at the LHC and perhaps even at the Tevatron.

6 pages, 8 figures. Added another fit and some more discussion showing that BR(B->tau nu) comes out in good agreement with predictions of the SM if the measured value of sin2beta is not used as an input. References added

References in corpus (10)

• Correlations among new CP violating effects in Delta F = 2 observables
• Neutral B Meson Mixing in Unquenched Lattice QCD
• Possible Indications of New Physics in Bd-mixing and in sin(2 beta) Determinations
• The B -> pi l nu semileptonic form factor from three-flavor lattice QCD: A model-independent determination of |V(ub)|
• Neutral kaon mixing from 2+1 flavor Domain Wall QCD
• The Golden Modes B^0 -> J/psi K_{S,L} in the Era of Precision Flavour Physics
• Unquenched determination of the kaon parameter B_K from improved staggered fermions
• Hints for the scale of new CP-violating physics from B-CP anomalies
• Doubly CKM-suppressed corrections to CP asymmetries in $B^0\to J/\psi K^0$
• Sum rule for rate and CP asymmetry in $B^{+}\to K^{+}{\pi }^0$

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• Neutral Gauge Boson Contributions to the Dimuon Charge Asymmetry in B Decays
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• Theoretical status of the CKM Matrix
• Realistic Four-Generation MSSM in Type II String Theory
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• Phenomenology from the Lattice
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