Examining the sensitivity of FASERν to generalized neutrino interactions

A bstract We investigate the sensitivity of the FASER ν 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 FASER ν detector. By considering all the neutrino channels produced at the LHC, we perform a statistical analysis to determine the sensitivity of FASER ν to constrain these interactions. Our results demonstrate that FASER ν 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 O (1), particularly when considering a Leptoquark mass in the TeV range.