# ICHEP2018 SEOUL

Jul 4 – 11, 2018
COEX, SEOUL
Asia/Seoul timezone

## EWBG, alignment and searching for new scalar via triple top signature

Jul 5, 2018, 12:00 PM
15m
203 (COEX, Seoul)

### 203

#### COEX, Seoul

Parallel Beyond the Standard Model

### Speaker

Dr Tanmoy Modak (National Taiwan University)

### Description

The alignment phenomenon, that the 125 GeV $h^0$ boson so resembles the Standard Model Higgs boson, can be understood in a two Higgs doublet model without discrete symmetry. The Yukawa couplings $\rho_{tt}$ and $\rho_{tc}$ offer new probes for the extra scalar $H^0$ and pseudoscalar $A^0$. We propose to search for $cg \to tH^0$, $tA^0$ followed by $H^0$, $A^0 \to t\bar t$, $t\bar c$, where same-sign dileptons could be the harbinger, with triple-top, in the signature of three leptons plus three $b$-jets, as confirmation. Discovery could touch upon the origin of baryon asymmetry of the Universe.

### Primary author

Dr Tanmoy Modak (National Taiwan University)