EFT at FASERν

• DOI: 10.1007/jhep10(2021)086
• Publication Date: 2021-10-14T05:02:47Z
• Authors: Adam Falkowski; Martín González-A...; Joachim Kopp; Yotam Soreq; Zahra Tabrizi
• Keywords: flavor; new physics; scale: electroweak interaction; Effective Field Theories; QC770-798; ATLAS; sensitivity; 16. Peace & justice; 530; 01 natural sciences; neutrino: production; weak interaction; effective field theory; meson: decay; neutrino: new interaction; deep inelastic scattering; [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]; Nuclear and particle physics. Atomic energy. Radioactivity; 0103 physical sciences; [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]; Neutrino Physics; 190; neutrino: interaction

A bstract We investigate the sensitivity of FASER ν detector to new physics in form non-standard neutrino interactions. , which will be installed 480 m downstream ATLAS interaction point, for first time study interactions multi-TeV neutrinos from a controlled source. Our formalism — is applicable any current and future experiment based on Standard Model Effective Theory (SMEFT) its counterpart, Weak Field (WEFT), below electroweak scale. Starting WEFT Lagrangian, we compute coefficients that modify production meson decays detection via deep-inelastic scattering, express effects terms modified flavor transition probabilities. For some coupling structures, find able constrain are two three orders magnitude weaker than weak interactions, implying indirectly probing at In cases, constraints become comparable existing limits them derived this paper already with 150 fb − 1 data.