8 papers
Echoes of Nucleon Decay from Long-Lived Particles
Patrick Adolf, Chandan Hati, Martin Hirsch +1
Nucleon decay searches provide uniquely sensitive probes of baryon number violation and physics beyond the Standard Model. We propose a new class of nucleon decay observables invol…
Long-Lived HNLs via ALP Portal at the LHC
Rebeca Beltrán, Chandan Hati, Martin Hirsch +1
Heavy neutral leptons (HNLs) and axion-like particles (ALPs) are both considered well-motivated candidates for beyond the standard model (BSM) physics. If ALPs with sizable couplin…
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…
Keeping It Renormalizable: Minimal Baryogenesis induced Asymmetric Dark Matter
Miguel Escudero, Thomas Hambye, Chandan Hati
Many asymmetric dark matter scenarios have been proposed to date. Among them, perhaps the most motivated ones are those in which the dark matter asymmetry is induced from the baryo…
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…
Baryogenesis and first-order QCD transition with gravitational waves from a large lepton asymmetry
Fei Gao, Julia Harz, Chandan Hati +3
A large primordial lepton asymmetry can lead to successful baryogenesis by preventing the restoration of electroweak symmetry at high temperatures, thereby suppressing the sphalero…