General minimal flavor violation

By A. Kagan, G. Perez, T. Volansky, Jure Zupan. 2009

240 citations recorded by the source corpus.

A model independent study of the minimal flavor violation (MFV) framework is presented, where the only sources of flavor breaking at low energy are the up and down Yukawa matrices. Two limits are identified for the Yukawa coupling expansion: linear MFV, where it is truncated at the leading terms, and nonlinear MFV, where such a truncation is not possible due to large third generation Yukawa couplings. These are then resummed to all orders using nonlinear {sigma}-model techniques familiar from models of collective breaking. Generically, flavor-diagonal CP violating (CPV) sources in the UV can induce O(1) CPV in processes involving third generation quarks. Because of a residual U(2) symmetry, the extra CPV in B{sub d}-B{sub d} mixing is bounded by CPV in B{sub s}-B{sub s} mixing. If operators with right-handed light quarks are subdominant, the extra CPV is equal in the two systems, and is negligible in processes involving only the first two generations. We find large enhancements in the up-type sector, both in CPV in D-D mixing and in top flavor violation.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/ca094e3eae8a48345740d268e7ab67e45d8279c1

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

Citations in the corpus

Patterns of flavour violation in the presence of a fourth generation of quarks and leptons (2010, methodology): “Using a non-linear parametrisation (as it has been used for the SM3 case in [42,43]),”
Renormalization group evolution of the Standard Model dimension six operators III: gauge coupling dependence and phenomenology (2013, unknown): “[62] for some discussion on this point.”
MFV SUSY: A Natural Theory for R-Parity Violation (2011, methodology): “In this work, we will not consider the problem of CP violation any further, as we do not expect that the problem will be qualitatively different for MFV SUSY than for other MFV models [17].”
Electroweak constraints on flavorful effective theories (2015, background): “Higher order corrections in the MFV expansion might modify the relations between the couplings to different generation in each sector [55].”
Lepton universality violation with lepton flavor conservation in B-meson decays (2015, background): “[96] for a discussion of the quark case), the operators singled out above, Q (1) `q and Q (3) `q , read:”
Anatomy and phenomenology of FCNC and CPV effects in SUSY theories (2009, result): “We recall here that the MFV symmetry principle in itself does not forbid the presence of flavour blind CP violating sources [64, 65, 66, 67, 69, 68, 70, 214, 215], hence a MFV MSSM suffers, in general, from the same SUSY CP problem as the ordinary MSSM.”
Higgs Physics at the HL-LHC and HE-LHC (2019, background): “, that the flavour breaking in the NP sector is only due to the SM Yukawas [39, 652, 653, 654, 655, 656, 657].”
Implications of LHCb measurements and future prospects - eScholarship (2013, background): “Here rGMFV parameterises the effect of resummation of higher powers of the Yukawa matrices when these are important, namely in general MFV (GMFV) models [443].”
Charged-Higgs phenomenology in the aligned two-Higgs-doublet model (2010, methodology): “Therefore, at the quantum level the A2HDM provides an explicit implementation of the popular Minimal Flavour Violation scenarios [27, 28, 29, 30, 31, 32], but allowing at the same time for new CP -violating phases.”
Higgs-mediated FCNCs: natural flavour conservation vs. minimal flavour violation (2010, background): “In ref. [ 19 ] particular emphasis is put on the fact that the expansion in powers of the top and bottom Yukawa couplings should not be truncated.”