https://doi.org/10.1140/epjc/s10052-019-7094-8
Regular Article - Theoretical Physics
Searching for scalar boson decaying into light 
boson at collider experiments in 
model
1
School of Physics, KIAS, Seoul, 130-722, Korea
2
Faculty of Education, Miyazaki University, Miyazaki, 889-2192, Japan
* e-mail: shimomura@cc.miyazaki-u.ac.jp
Received:
27
November
2018
Accepted:
1
July
2019
Published online:
13
July
2019
We study a model with gauge symmetry and discuss collider searches for a scalar boson, which breaks symmetry spontaneously, decaying into light gauge boson. In this model, the new gauge boson, , with a mass lighter than 
MeV, plays a role in explaining the anomalous magnetic moment of muon via one-loop contribution. For the gauge boson to have such a low mass, the scalar boson, 
with GeV mass appears associated with the symmetry breaking. We investigate experimental constraints on gauge coupling, kinetic mixing, and mixing between the SM Higgs and . Then collider search is discussed considering production followed by decay process 
at the large hadron collider and the international linear collider. We also estimate discovery significance at the linear collider taking into account relevant kinematical cut effects.
© The Author(s), 2019
