# ICHEP2012

Jul 4 – 11, 2012
Melbourne Convention and Exhibition Centre
Australia/Melbourne timezone
ICHEP2012 - 36th International Conference for High Energy Physics

## Top Decays with Flavor Changing Neutral Higgs Interactions at the LHC

Jul 6, 2012, 3:00 PM
15m
Room 216 (Melbourne Convention and Exhibition Centre)

### Room 216

#### Melbourne Convention and Exhibition Centre

Melbourne Australia
Parallel Sessions Track 4 - Top Quark Physics

### Speaker

Prof. Chung Kao (University of Oklahoma (US))

### Description

We investigate the prospects for the discovery of a top quark decaying into one light Higgs boson along with a charm quark in top quark pair production at the CERN Large Hadron Collider (LHC). A general two Higgs doublet model is adopted to study the signature of flavor changing neutral Higgs interactions for $t \to c\phi^0$ or $\bar{t} \to \bar{c}\phi^0$ where $\phi^0$ is a CP-even scalar ($H^0$) or a CP-odd pseudoscalar ($A^0$). The dominant physics background is evaluated with realistic acceptance cuts as well as tagging and mistagging efficiencies. We have found abundant signal events and that our acceptance cuts reduce the physics background enough to establish a $5\sigma$ signal for $M_\phi \alt 130$ GeV at the early stage of LHC with $\sqrt{s} = 7$ TeV and an integrated luminosity of $10$ fb$^{-1}$. The discovery potential will be greatly enhanced with the full energy of $\sqrt{s} = 14$ TeV.

### Primary author

Prof. Chung Kao (University of Oklahoma (US))

 Slides