Spontaneous wash-in leptogenesis in Type II Seesaw with Majoron pNGB background enables baryon asymmetry generation alongside dark matter cogenesis for specific v_T, v_sigma and m_j ranges.
A Call for New Physics : The Muon Anomalous Magnetic Moment and Lepton Flavor Violation
5 Pith papers cite this work. Polarity classification is still indexing.
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abstract
We review how the muon anomalous magnetic moment ($g-2$) and the quest for lepton flavor violation are intimately correlated. Indeed the decay $\mu \to e \gamma$ is induced by the same amplitude for different choices of in- and outgoing leptons. In this work, we try to address some intriguing questions such as: Which hierarchy in the charged lepton sector one should have in order to reconcile possible signals coming simultaneously from $g-2$ and lepton flavor violation? What can we learn if the $g-2$ anomaly is confirmed by the upcoming flagship experiments at FERMILAB and J-PARC, and no signal is seen in the decay $\mu \rightarrow e\gamma$ in the foreseeable future? On the other hand, if the $\mu \rightarrow e\gamma$ decay is seen in the upcoming years, do we need to necessarily observe a signal also in $g-2$?. In this attempt, we generally study the correlation between these observables in a detailed analysis of simplified models. We derive master integrals and fully analytical and exact expressions for both phenomena, and adress other flavor violating signals. We investigate under which conditions the observations can be made compatible and discuss their implications. Lastly, we discuss in this context several extensions of the SM, such as the Minimal Supersymmetric Standard Model, Left-Right symmetric model, $B-L$ model, scotogenic model, two Higgs doublet model, Zee-Babu model, 331 model, and $L_{\mu}-L_{\tau}$, dark photon, seesaw models type~I, II and III, and also address the interplay with $\mu \to eee$ decay and $\mu-e$ conversion.
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Simulations of the positron transport system for MACE report 65.81% geometric acceptance, 88 by 102 micrometer position resolution, and 6.9 ns transit time spread enabling 10 to the minus 7 background rejection.
A dark matter fermion is shown to simultaneously explain the relic density, satisfy direct detection and collider bounds, and produce observable rates for muon-to-electron transitions in a viable parameter region.
Singlet-doublet dark matter induces radiative neutrino masses at one loop while enabling TeV-scale leptogenesis in both Majorana and Dirac realizations.
A singlet scalar leptoquark in the 331LHN model can fully account for the muon anomalous magnetic moment discrepancy with mass above 1.8 TeV (or 6 TeV using 2025 data) while obeying LFV constraints and showing suppressed LHC signals.
citing papers explorer
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Type II Seesaw Leptogenesis in a Majoron background
Spontaneous wash-in leptogenesis in Type II Seesaw with Majoron pNGB background enables baryon asymmetry generation alongside dark matter cogenesis for specific v_T, v_sigma and m_j ranges.
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Positron Transport System for Muonium-to-Antimuonium Conversion Experiment
Simulations of the positron transport system for MACE report 65.81% geometric acceptance, 88 by 102 micrometer position resolution, and 6.9 ns transit time spread enabling 10 to the minus 7 background rejection.
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Dark Matter as a Source for Lepton Flavor Violation
A dark matter fermion is shown to simultaneously explain the relic density, satisfy direct detection and collider bounds, and produce observable rates for muon-to-electron transitions in a viable parameter region.
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Singlet-doublet dark matter induced radiative neutrino mass and TeV scale leptogenesis
Singlet-doublet dark matter induces radiative neutrino masses at one loop while enabling TeV-scale leptogenesis in both Majorana and Dirac realizations.
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Probing muon anomaly and lepton flavor violation with scalar leptoquarks in the 331LHN model
A singlet scalar leptoquark in the 331LHN model can fully account for the muon anomalous magnetic moment discrepancy with mass above 1.8 TeV (or 6 TeV using 2025 data) while obeying LFV constraints and showing suppressed LHC signals.