# IOP 2014 Joint HEPP & APP Group Meeting

Apr 7 – 9, 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

## Using a Regressional Analysis to Improve the b-jet energy correction in $WH\rightarrow\ell\nu bb$ Searches at ATLAS

Apr 8, 2014, 5:45 PM
15m
Room C (Windsor Building)

### Room C

#### Windsor Building

contributed talk The Energy Frontier Programme

### Speaker

Thomas Olivier Ravenscroft (University of Glasgow (GB))

### Description

Presented is a method to improve the b-jet energy resolution with the task of increasing the signal sensitivity in searches decaying to a b, anti-b quark pair in the final state. The machinery has been tested using Monte Carlo simulated samples in the process $WH \rightarrow l\nu bb$. The method trains a function through regression applying a correction factor to bring the reconstructed jet energy closer to that of generator level energy. This narrows the b anti-b jet mass peak of the signal, and therefore increases the signal to background separation

### Primary author

Thomas Olivier Ravenscroft (University of Glasgow (GB))

 Slides