Examining the sensitivity of FASERν to generalized neutrino interactions

Abstract

We investigate the sensitivity of the FASERν detector, a novel experimental setup at the LHC, to probe and constrain generalized neutrino interactions (GNI). Employing a comprehensive theoretical framework, we model the effects of generalized neutrino interactions on neutrino-nucleon deep inelastic scattering processes within the FASERν detector. By considering all the neutrino channels produced at the LHC, we perform a statistical analysis to determine the sensitivity of FASERν to constrain these interactions. Our results demonstrate that FASERν can place stringent constraints on the GNI effective couplings. Additionally, we study the relation between GNI and a minimal Leptoquark model where the SM is augmented by a singlet Leptoquark with hypercharge 1/3. We have found that the sensitivities for various combinations of the Leptoquark Yukawa couplings are approximately $$ \mathcal{O} $$ O (1), particularly when considering a Leptoquark mass in the TeV range.