3 citations · 5 across the 8 of their papers we have counts for
9 papers
Flavorful Lepton-Number-Violating SMEFT: Loop Mixing, and Rare Meson Decays
Lukáš Gráf, Chandan Hati, Ana Martín-Galán +1
We investigate how one-loop operator mixing reshapes the flavor sensitivity of lepton-number-violating dimension-7 SMEFT interactions. Using both bottom-up and top-down EFT approac…
Probing SMEFT at Belle II with displaced dilepton vertices
Patrick D. Bolton, Fabian Esser, Lukáš Gráf +3
The existence of right-handed (RH) neutrinos is strongly motivated by the observation of small neutrino masses and as a means to shed light on the origin of parity violation in the…
Cartography of LNV dim-9 SMEFT: Implications for Radiative Neutrino Masses and
Fabian Esser, Lukáš Gráf, Chandan Hati
We perform a systematic study of lepton-number-violating (LNV) dimension-9 operators in the Standard Model Effective Field Theory (SMEFT) that can mediate neutrinoless double beta…
Less structure on Mpc scales from decaying sterile neutrino dark matter
María Dias Astros, Lukáš Gráf, Stefan Vogl
Late decays of dark matter to a lighter, warm dark matter component are a known way to reduce the amplitude of the matter power spectrum on scales of Mpc. However, only very fe…
Scalarful double beta decay
Jordy de Vries, Lukáš Gráf, Vaisakh Plakkot +1
We revisit scalar emissions in double beta decays of nuclei, often discussed in the context of Majoron models, in light of the latest developments on the study of neutrinoless doub…
Spectrum in Chiral Effective Field Theory
Saad el Morabit, Ryan Bouabid, Vincenzo Cirigliano +3
We investigate two-neutrino double beta decay () in chiral effective field theory. We find contributions from weak magnetism and double-weak pion-exchange at next-to-leading-…
Radiative neutrino masses from dim-7 SMEFT: a simplified multi-scale approach
Kåre Fridell, Lukáš Gráf, 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…
Dark population transfer mechanism for sterile neutrino dark matter
George M. Fuller, Lukáš Gráf, Amol V. Patwardhan +1
We present a mechanism for producing a cosmologically-significant relic density of one or more sterile neutrinos. This scheme invokes two steps: First, a population of "heavy" ster…
Neutrinoless Double Beta Decay without Vacuum Majorana Neutrino Mass
Lukáš Gráf, Sudip Jana, Oliver Scholer +1
We present a proof-of-concept extension to the Standard Model that can generate a non-vanishing neutrinoless double beta decay () signal without the existence of Majorana neu…