Claudia Hagedorn
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View article: Selection rules for charged lepton flavor violating processes from residual flavor groups
Selection rules for charged lepton flavor violating processes from residual flavor groups Open
We systematically investigate the possible phenomenological impact of residual flavor groups in the charged lepton sector. We consider all possible flavor charge assignments for Abelian residual symmetries up to Z8. The allowed flavor stru…
View article: Selection rules for charged lepton flavour violating processes from residual flavour groups
Selection rules for charged lepton flavour violating processes from residual flavour groups Open
We systematically investigate the possible phenomenological impact of residual flavour groups in the charged lepton sector. We consider all possible flavour charge assignments for abelian residual symmetries up to Z8. The allowed flavour s…
View article: Low-scale seesaw with flavour and CP symmetries $\\unicode{x2013}$ from\n colliders to leptogenesis
Low-scale seesaw with flavour and CP symmetries $\\unicode{x2013}$ from\n colliders to leptogenesis Open
We consider an extension of the Standard Model with three right-handed\nneutrinos, endowed with a flavour symmetry $G_f$, $G_f=\\Delta (3 \\, n^2)$ or\n$G_f=\\Delta (6 \\, n^2)$, $n \\geq 2$, and CP. For large active-sterile mixing,\nwe st…
View article: Charged lepton flavour violation from inverse seesaw with flavour and CP symmetries
Charged lepton flavour violation from inverse seesaw with flavour and CP symmetries Open
We study charged lepton flavour violation in a scenario in which light neutrino masses are generated via the inverse seesaw mechanism with 3+3 gauge singlet fermions, Ni and Sj, i,j=1,2,3. Lepton mixing is predicted with the help of the fl…
View article: Flavon vacuum alignment beyond SUSY
Flavon vacuum alignment beyond SUSY Open
In flavor models the vacuum alignment of flavons is typically achieved via the F-terms of certain fields in the supersymmetric limit. We propose a method for preserving such alignments, up to a rescaling of the vacuum expectation values, e…
View article: Flavon vacuum alignment beyond SUSY
Flavon vacuum alignment beyond SUSY Open
In flavor models the vacuum alignment of flavons is typically achieved via the $F$-terms of certain fields in the supersymmetric limit. We propose a method for preserving such alignments, up to a rescaling of the vacuum expectation values,…
View article: Flavor anomalies meet flavor symmetry
Flavor anomalies meet flavor symmetry Open
We construct an extension of the Standard Model with a scalar leptoquark φ∼(3,1,-13) and the discrete flavor symmetry Gf=D17×Z17 to explain anomalies observed in charged-current semileptonic B meson decays and in the muon anomalous magneti…
View article: Flavour anomalies meet flavour symmetry
Flavour anomalies meet flavour symmetry Open
We construct an extension of the Standard Model with a scalar leptoquark $ϕ\sim (3,1,-\tfrac13)$ and the discrete flavour symmetry $G_f=D_{17}\times Z_{17}$ to explain anomalies observed in charged-current semi-leptonic $B$ meson decays an…
View article: Low-scale leptogenesis with flavour and CP symmetries
Low-scale leptogenesis with flavour and CP symmetries Open
We consider a type-I seesaw framework with a flavour symmetry from the series of non-abelian groups $Δ(3 n^2)$ and $Δ(6 n^2)$ and a CP symmetry. Breaking these symmetries non-trivially results in the right-handed neutrinos being degenerate…
View article: Flavour and CP symmetries in the inverse seesaw
Flavour and CP symmetries in the inverse seesaw Open
We consider an inverse seesaw mechanism of neutrino mass generation in which the Standard Model is extended by $$3+3$$ (heavy) sterile states, and endowed with a flavour symmetry $$G_f$$ , $$G_f=\Delta (3 \, n^2)$$ o…
View article: Lepton and quark masses and mixing in a SUSY model with Δ(384) and CP
Lepton and quark masses and mixing in a SUSY model with Δ(384) and CP Open
We construct a supersymmetric model for leptons and quarks with the flavor symmetry Δ(384) and CP. The peculiar features of lepton and quark mixing are accomplished by the stepwise breaking of the flavor and CP symmetry. The correct descri…
View article: Lepton and quark mixing from a stepwise breaking of flavor and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:math>
Lepton and quark mixing from a stepwise breaking of flavor and Open
We explain all features of lepton and quark mixing in a scenario with the\nflavor symmetry Delta (384) and a CP symmetry, where these are broken in\nseveral steps. The residual symmetry in the neutrino and up quark sector is a\nKlein group…
View article: Long-lived particles at the energy frontier: the MATHUSLA physics case
Long-lived particles at the energy frontier: the MATHUSLA physics case Open
We examine the theoretical motivations for long-lived particle (LLP) signals at the LHC in a comprehensive survey of standard model (SM) extensions. LLPs are a common prediction of a wide range of theories that address unsolved fundamental…
View article: Lepton and Quark Masses and Mixing in a SUSY Model with Delta(384) and CP
Lepton and Quark Masses and Mixing in a SUSY Model with Delta(384) and CP Open
We construct a supersymmetric model for leptons and quarks with the flavor symmetry Delta(384) and CP. The peculiar features of lepton and quark mixing are accomplished by the stepwise breaking of the flavor and CP symmetry. The correct de…
View article: Lepton and Quark Masses and Mixing in a SUSY Model with Delta(384) and\n CP
Lepton and Quark Masses and Mixing in a SUSY Model with Delta(384) and\n CP Open
We construct a supersymmetric model for leptons and quarks with the flavor\nsymmetry Delta(384) and CP. The peculiar features of lepton and quark mixing\nare accomplished by the stepwise breaking of the flavor and CP symmetry. The\ncorrect…
View article: CP violation in the lepton sector and implications for leptogenesis
CP violation in the lepton sector and implications for leptogenesis Open
We review the current status of the data on neutrino masses and lepton mixing and the prospects for measuring the CP-violating phases in the lepton sector. The possible connection between low energy CP violation encoded in the Dirac and Ma…
View article: Leptonic CP violation theory
Leptonic CP violation theory Open
I summarize the status of theoretical predictions for the yet to be measured leptonic CP phases, the Dirac phase δ and the two Majorana phases α and β. I discuss different approaches based on: (a) a flavor symmetry without and with correct…
View article: Theories of Leptonic Flavor
Theories of Leptonic Flavor Open
I discuss different theories of leptonic flavor and their capability of describing the features of the lepton sector, namely charged lepton masses, neutrino masses, lepton mixing angles and leptonic (low and high energy) CP phases. In part…
View article: Flavor and CP symmetries for leptogenesis and 0νββ decay
Flavor and CP symmetries for leptogenesis and 0νββ decay Open
We perform a comprehensive analysis of the phenomenology of leptonic low and high energy CP phases in a scenario with three heavy right-handed neutrinos in which a flavor and a CP symmetry are non-trivially broken. All CP phases as well as…