# IOP 2014 Joint HEPP & APP Group Meeting

7-9 April 2014
Royal Holloway, University of London
Europe/London timezone
Institute of Physics 2014 Joint High Energy Particle Physics and Astro Particle Physics Groups Annual Meeting

## Novel Techniques to improve the Invariant Dijet Mass Reconstruction in the Standard Model Higgs boson resonance search $H\rightarrow b\bar{b}$ in association with a W/Z boson using the ATLAS detector

8 Apr 2014, 17:00
15m
Room C (Windsor Building)

### Room C

#### Windsor Building

contributed talk The Energy Frontier Programme

### Speaker

Manuel Proissl (University of Edinburgh (GB))

### Description

An updated direct search for a Standard Model Higgs boson decaying into pairs of $b$ quarks in association with a W or Z boson using the ATLAS detector at the LHC is presented. The search is performed in the three decay modes $ZH\rightarrow\nu\nu b\bar{b}$, $WH\rightarrow\ell\nu b\bar{b}$ and $ZH\rightarrow\ell\ell b\bar{b}$ with $\ell$ denoting either electrons or muons and has to cope with overwhelming backgrounds from the dijet production expected from QCD interactions. Final state radiation and reconstruction effects may decrease the $b\bar{b}$ resonance resolution significantly while comparably decreasing the probability of observing the decay over the background. This talk presents the development and evaluation of advanced techniques to improve the invariant dijet mass reconstruction.

### Primary author

Manuel Proissl (University of Edinburgh (GB))

 Slides