https://doi.org/10.1140/epjc/s10052-019-6937-7
Regular Article - Theoretical Physics
Heavy neutrino search via semileptonic higgs decay at the LHC
1
School of Physics, KIAS, Seoul, 02455, Korea
2
Department of Physics and Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
3
Korea Neutrino Research Center, Seoul National University, Bldg 23-312, Sillim-dong, Gwanak-gu, Seoul, 08826, Korea
4
Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
5
Department of Physics and Astronomy, Wayne State University, Detroit, 48201, USA
6
Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A&M University, College Station, TX, 77843-4242, USA
* e-mail: arindam@kias.re.kr
Received:
25
September
2018
Accepted:
11
May
2019
Published online:
20
May
2019
In the inverse see-saw model the effective neutrino Yukawa couplings can be sizable due to a large mixing angle between the light 
and heavy neutrinos (N). When the right handed neutrino (N) can be lighter than the Standard Model (SM) Higgs boson (h). It can be produced via the on-shell decay of the Higgs, 
at a significant branching fraction at the LHC. In such a process N mass can be reconstructed in its dominant 
decays. We perform an analysis on this channel and its relevant backgrounds, among which the 
jets background is the largest. Considering the existing mixing constraints from the Higgs and electroweak precision data, the best sensitivity of the heavy neutrino search is achieved for benchmark N mass at 100 and 110 GeV for upcoming high luminosity LHC runs.
© The Author(s), 2019
