Speaker
Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)
Yes
Level for award<br> (Hons, MSc, <br> PhD, N/A)?
MSc
Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?
No
Main supervisor (name and email)<br>and his / her institution
Sahal Yacoob, sahal.yacoob@uct.ac.za,
University of Cape Town
Apply to be<br> considered for a student <br> award (Yes / No)?
No
Abstract content <br> (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>
W±W± → W±W± is a rare Standard Model process which can be used to investigate the spontaneous symmetry breaking present in the Standard Model. Previous analysis using √s = 8 TeV proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider analysed W±W±jj production cross sections in two fiducial regions with different sensitivities to the electroweak and strong production mechanisms. Events with two reconstructed same sign leptons (e± e± ,e± μ± , and μ±μ±) and two jets were analysed. First evidence for W±W± production and electroweak only production were observed to a significance of 4.5 and 3.6 standard deviations respectively. Starting in 2015, analysis is underway to attempt to increase the significance for the measurements using √s = 13 TeV proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider. Since the process is very rare, it is dominated by various backgrounds, one of which is tt- decay. In this presentation we discuss estimating the fake muon background coming from tt-decay using Monte Carlo simulations.
