Heavy Neutral Lepton Search at NA62

  • Nora Patricia Estrada-TristánEmail author
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 234)


In this paper we present the results of the search for heavy neutral lepton (HNL) production in charged kaon decays using a data sample collected with a minimum bias trigger by the NA62 experiment at CERN in 2015. Upper limits at the \(10^{-7}\)\(10^{-6}\) level are established on the elements \(|U_{e4}|\) and \(|U_{\mu 4}|\) of the extended neutrino mixing matrix for HNL masses in the range 170–448 \(\text {MeV/c}^2\) and 250–376 \(\text {MeV/c}^2\), respectively.


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Universidad de GuanajuatoGuanajuatoMexico
  2. 2.Universidad Autónoma de San Luis PotosiSan Luis PotosiMexico

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