International Workshop on Future Linear Colliders, LCWS2018

ILC signatures of the minimal U(1)X extended Standard Model

25 Oct 2018, 16:52

22m

San Saba (University Center)

BSM 4

Speaker

Nobuchika Okada

Description

We consider the minimal U(1)${}_X$ extension of the Standard Model (SM), where three right-handed neutrinos (RHNs) and one SM singlet $U(1{)}_X$ Higgs field are introduced. The model is anomaly free in the presence of the three RHNs. Associated with the U(1)${}_X$ symmetry breaking by the $U(1{)}_X$ Higgs VEV, the RHNs acquire Majorana masses, and the seesaw mechanism for generating light SM neutrino masses is automatically implemented after the electroweak symmetry breaking. In this talk, I will report our studies on U(1)${}_X$ gauge boson signatures at the ILC with a variety of final states, such as a pair of SM fermions and $ZH$. I will also discuss a pair production of RHNs mediated by the U(1)${}_X$ gauge boson.

Presentation materials

Okada_LCWS18.pdf