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Anatomy and phenomenology of FCNC and CPV effects in SUSY theories

Anatomy and phenomenology of FCNC and CPV effects in SUSY theories,10.1016/j.nuclphysb.2009.12.019,Nuclear Physics B,Wolfgang Altmannshofer,Andrzej J.

Anatomy and phenomenology of FCNC and CPV effects in SUSY theories   (Citations: 28)
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We perform an extensive study of FCNC and CP Violation within Supersymmetric (SUSY) theories with particular emphasis put on processes governed by b→s transitions and of their correlations with processes governed by b→d transitions, s→d transitions, D0–D¯0 oscillations, lepton flavour violating decays, electric dipole moments and (g−2)μ. We first perform a comprehensive model-independent analysis of ΔF=2 observables and we emphasize the usefulness of the Rb–γ plane in exhibiting transparently various tensions in the present UT analyses. Secondly, we consider a number of SUSY models: the general MSSM, a flavour-blind MSSM, the MSSM with Minimal Flavour Violation as well as SUSY flavour models based on Abelian and non-Abelian flavour symmetries that show representative flavour structures in the soft SUSY breaking terms. We show how the characteristic patterns of correlations among the considered flavour observables allow to distinguish between these different SUSY scenarios. Of particular importance are the correlations between the CP asymmetry Sψϕ and Bs→μ+μ−, between the anomalies in SϕKS and Sψϕ, between SϕKS and de, between Sψϕ and (g−2)μ and also those involving lepton flavour violating decays. In our analysis, the presence of right-handed currents and of the double Higgs penguin contributions to Bs mixing plays a very important role. We propose a “DNA-Flavour Test” of NP models including Supersymmetry, the Littlest Higgs model with T-parity and the Randall–Sundrum model with custodial protection, with the aim of showing a tool to distinguish between these NP scenarios, once additional data on flavour-changing processes become available. As a byproduct, we present the SM prediction for BR(B+→τ+ν)=(0.80±0.12)×10−4 that follows solely from an analytical formula for this branching ratio in terms of ΔMs,d and SψKS asymmetry and which does not involve Vub and FB uncertainties.
Journal: Nuclear Physics B - NUCL PHYS B , vol. 830, no. 1, pp. 17-94, 2010
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    • ...[19]), which are however SM-like in this framework...
    • ...The orange points in the left column havej sin j < 0:2, as in gure and a real term [19, 45]...

    Riccardo Barbieriet al. CP violation in supersymmetry with Effective Minimal Flavour Violation

    • ...Essential features of the Belle II upgrade [7] permit access to several crucial measurements, reviews of which can be found elsewhere [8], [19] and which are complementary to searches for New Physics at the large hadron collider (LHC) experiments [9]...

    Yoshihito Iwasakiet al. Level 1 Trigger System for the Belle II Experiment

    • ...In section 2 we update our UT analysis of [41] using the (Rb; ) plane and stressing that a large value of in the UT would provide a natural solution to the observed tensions within the SSU(5)RN model...
    • ...Section 6 is devoted to approximate analytical expressions for various correlations between hadronic and leptonic observables that are then analyzed numerically in section 7. In section 8 we present a DNA-table for this GUT scenario and compare it with the ones of supersymmetric avour models analyzed by us in [41]...
    • ...In gure 1, we show the above tensions in the Rb plane updating the analysis of [41] by the inclusion of the new values for [48] and ct [49]...
    • ...3) K and S KS NP free while Md= Ms aected by NP at the level of 20% [41], requiring in turn an increased value of Rt to t the data...
    • ...As stressed in [41], the possibility 3) implies a large value of , as shown in gure (see the lower plot on the right), and signicantly below 90 . Therefore, this scenario can be easily probed or falsied by means of improved determinations of , as expected at the LHCb, and . Moreover, the possibility 3) is particularly relevant within the SSU(5)RN model, as we will discuss in detail later...
    • ...[41] and therein references for the full expressions)...
    • ...[41] for the notation), the parametersb u andb c calculated in [79] and = 1...
    • ...C8 which reads [41] 4GF...
    • ...The branching ratio for Bq ! + (with q = s;d) in the presence of NP scalar currents can be expressed as [41]...
    • ...with C SM 10 given for instance in [41]. 3. Also the hadronic and leptonic EDMs might be generated by avor dependent (avored EDMs) [ 80{82]...
    • ...This is in contrast to scenarios like the avour-blind MSSM [ 95], the MSSM with MFV or models with purely left-handed currents where Ci are dominant [41]...
    • ...[41] a \DNA-Flavour Test" has been introduced with the aim of summarizing the potential size of deviations from the SM results for the most interesting observables in a selection of SUSY and non-SUSY models...
    • ...[41] for a detailed description of the pattern of NP eects in various SUSY models, we want to comment here about one of the most remarkable dierence we found between the SSU(5)RN model and the SUSY avour models discussed in ref...
    • ...[41] was able to simultaneously account for the current data for S and SK S , in contrast to the SSU(5)RN model discussed here...
    • ...In fact S receives in these models large values only at large tan where the sign of the correlation between S and SK S is found to be opposite to data [41], that is SK S is enhanced rather than suppressed when S is enhanced...
    • ...[41]) for the SSU(5)RN model, with the aim of showing a tool to distinguish between NP scenarios, once additional data on avour changing processes become available...

    Andrzej J. Buraset al. Footprints of SUSY GUTs in flavour physics

    • ...A general discussion of different scenarios, including the LHT model as well as supersymmetric and extra dimensional models, can be found in [36, 37]...
    • ...be also interesting in order to discriminate this model from other SM extensions [36, 37]...

    Francisco del Águilaet al. Lepton flavor violation in the Simplest Little Higgs model

    • ...with the loop functionY (xt) given, for instance, in [56]...
    • ...In some of these frameworks large enhancements of the two Br(Bs;d! + ) are possible, but their ratio is no more related tojVts=Vtdj 2 . As a result, the plots corresponding to gure 4 look very dierently (see in particular the plots in [56])...
    • ...This idea cannot be realized in the ordinary MSSM with MFV, as shown in [56]...

    Andrzej J. Buraset al. Higgs-mediated FCNCs: natural flavour conservation vs. minimal flavour...

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