Running quark and lepton parameters at various scales
By S. Antusch, Vinzenz Maurer. 2013
224 citations recorded by the source corpus.
A bstractWe calculate the values and 1σ ranges of the running quark and lepton Yukawa couplings as well as of the quark mixing parameters at various energy scales, i.e. at MZ, 1 TeV, 3 TeV, 10 TeV and at the GUT scale, to provide useful input for model building. Above TeV energies, we assume the minimal supersymmetric extension of the Standard Model, and include the tan β-enhanced one-loop supersymmetric threshold corrections which arise when matching the SM to its SUSY extension. We calculate the GUT scale values of the running parameters as well as their 1σ ranges, with the supersymmetric threshold corrections included and with their effects parametrised in a simple way.
Subfields: Artificial Intelligence, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/3ed6465100a476a82e545b191238cbf1b123ee29
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In Artificial Intelligence
In Nuclear and High Energy Physics
Citations in the corpus
- Flavor structures of charged fermions and massive neutrinos (2019, background): “15In the SM the so-called “mass” of a fermion at an energy scale above v ' 246 GeV is usually defined as the product of its Yukawa coupling eigenvalue at this scale and v/ √ 2, where the vacuum expectation value v is treated as a constant and only the Yukawa coupling parameter evolves with the energ”
- Lepton flavor non-universality in B-meson decays from a U(2) flavor model (2015, methodology): “Their (in general complex) Wilson coefficients are given by CK1 = g′2∆sdL ∆ sd L 2M2Z′ , CBd1 = g′2∆bdL ∆ bd L 2M2Z′ , CBs1 = g′2∆bsL ∆ bs L 2M2Z′ , (4.1) and numerically one has (using md/ms ≈ 0.05) CK1 = 1.8× 10−10 TeV2 ( sLd23 |Vcb| )3 cRd23 k , (4.2) CBd1 = 1.1× 10−7 TeV2 ( sLd23 |Vcb| ) cRd23 k”
- Modular invariance faces precision neutrino data (2018, methodology): “We account for this effect by directly fitting the values of the charged lepton Yukawa couplings at mZ , as derived from [52,66].”