# 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

## Top-quark width studies at ATLAS

Not scheduled
15m
Windsor Building (Royal Holloway, University of London)

### Windsor Building

#### Royal Holloway, University of London

Egham Hill, Surrey TW20 0EX
poster Poster Session

### Speaker

Javier Alberto Murillo Quijada (University of Birmingham (GB))

### Description

A preliminary study of the top-quark width ($\Gamma_{top}$) is performed using the ATLAS collaboration official Monte Carlo (MC) samples corresponding to proton-proton collisions with centre of mass energy of $\sqrt{s}$ = 8 TeV and scaled to integrated luminosity $\int Ldt$ = 20.3$fb^{-1}$. Templates with different values of $\Gamma_{top}$ are generated assuming an underlying truth top mass distribution with relativistic Breit-Wigner shape, as modelled in the MC generator. The reconstructed top mass has been obtained by minimising a $\chi^{2}$ function and simulated experiments have been studied.

### Summary

A preliminary study of the top-quark width ($\Gamma_{top}$) is performed using the ATLAS collaboration official Monte Carlo (MC) samples corresponding to proton-proton collisions with centre of mass energy of $\sqrt{s}$ = 8 TeV and scaled to integrated luminosity $\int Ldt$ = 20.3$fb^{-1}$. Templates with different values of $\Gamma_{top}$ are generated assuming an underlying truth top mass distribution with relativistic Breit-Wigner shape, as modelled in the MC generator. The reconstructed top mass has been obtained by minimising a $\chi^{2}$ function and simulated experiments have been studied.

### Primary authors

Javier Alberto Murillo Quijada (University of Birmingham (GB)) Dr John Allan Wilson (University of Birmingham (GB)) Juergen Thomas (University of Birmingham (GB)) Simon Head (University of Birmingham (GB))

### Presentation Materials

There are no materials yet.