Kåre Fridell

collaborators

4 papers

hep-ph2026

Feasibility Study of Lepton Number Violation in Rare $B$ and $K$ Meson Decays

Motoi Endo, KÃ¥re Fridell, Sho Iwamoto +2

We study lepton-number-violating interactions at dimension seven in the Standard Model effective field theory that contribute to the meson decays $B \to K I^½ I^½$ and $K \to I ¨ I^½ I^½$ .…

hep-ph2025

Radiative neutrino masses from dim-7 SMEFT: a simplified multi-scale approach

KÃ¥re Fridell, LukÃ¡Å¡ GrÃ¡f, Julia Harz +1

Lepton-number-violating interactions occur in the Standard Model Effective Field Theory (SMEFT) at odd dimensions starting from the dimension-5 Weinberg operator. Although the oper…

hep-ph2025

Lepton flavor physics at $I^¼^{+} I^¼^{+}$ colliders

KÃ¥re Fridell, Ryuichiro Kitano, Ryoto Takai

We discuss sensitivities to lepton flavor violating (and conserving) interactions at future muon colliders, especially at $I^¼^{+} I^¼^{+}$ colliders. Compared with the searches for rare…

hep-ph2025

Leptogenesis and neutrino mass with scalar leptoquarks

KÃ¥re Fridell

Leptoquarks are known to generate a wide range of potentially observable phenomena, and have been searched for in different experiments. We show that the observed baryon asymmetry…

Feasibility Study of Lepton Number Violation in Rare B and K Meson Decays

Radiative neutrino masses from dim-7 SMEFT: a simplified multi-scale approach

Lepton flavor physics at I^¼+I^¼+ colliders

Leptogenesis and neutrino mass with scalar leptoquarks

Feasibility Study of Lepton Number Violation in Rare $B$ and $K$ Meson Decays

Lepton flavor physics at $I^¼^{+} I^¼^{+}$ colliders