arXiv subjects

Meziane Chekkal

Publications and source records attributed to Meziane Chekkal.

2 recordsLinked to original sources

arXiv2018

Right-Handed Neutrinos: DM and LFV $vs$ Collider

In a class of neutrino mass models with a lepton flavor violation (LFV) Yukawa interaction term that involves a heavy right handed neutrino, a charged scalar and a charged lepton, we investigate at the ILC@500 GeV the possibility of observing news physics. These models can address neutrino mass and dark matter without being in conflict with different LFV constraints. By imposing DM relic density and LFV constraints, we recast the analysis done by L3 collaboration at LEP-II of monophoton searches on our space parameter and look for new physics in such channels like monophoton and $S S(γ)$, where we give different cuts and show the predicted distributions. We show also that using polarized beams could improve the statistical significance.

hep-ph↗

arXiv2017

Right-handed neutrinos: dark matter, lepton flavor violation and leptonic collider searches

We examine lepton flavor violating (LFV) interactions for heavy right-handed neutrinos that exist in most of the standard model extensions that address dark matter (DM) and neutrino mass at the loop level. In order to probe the collider effect of these LFV interactions, we impose the assumption that the model parameters give the right values of the DM relic density and fulfill the constraints from the LFV processes $\ell_α\rightarrow\ell_βγ$ and $\ell_α\rightarrow3\ell_β$. We also investigate the possibility of probing these interactions, and hence the right-handed neutrino, at leptonic colliders through different final state signatures.

hep-ph↗