Discovering heavy neutrino oscillations in rare Formula Presented meson decays at HL-LHCb

Abstract

In this work, we study the lepton flavor and lepton number violating Formula Presented meson decays via two intermediate on-shell Majorana neutrinos Formula Presented into two charged leptons and a charged pion Formula Presented. We evaluated the possibility to measure the modulation of the decay width along the detector length produced as a consequence of the lepton flavor violating process, in a scenario where the heavy neutrinos masses range between Formula Presented. We study some realistic conditions, which could lead to the observation of this phenomenon at future Formula Presented factories, such as the HL-LHCb. Published by the American Physical Society