4-8 July 2016
Kramer Law building
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=10&confId=86">The Proceedings of SAIP2016</a> published on 24 December 2017

Estimation of non-prompt fake muon background in scattering of two massive vector bosons (VBS), W W → W W .

5 Jul 2016, 16:10
1h 50m
Kramer Law building

Kramer Law building

UCT Middle Campus Cape Town
Board: B.118
Poster Presentation Track B - Nuclear, Particle and Radiation Physics Poster Session (1)

Speaker

Mr Lucas McConnell (University of Cape Town)

Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)

Yes

Abstract content <br> &nbsp; (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.

Main supervisor (name and email)<br>and his / her institution

Sahal Yacoob, sahal.yacoob@uct.ac.za,
University of Cape Town

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD, N/A)?

MSc

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

No

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

No

Primary author

Mr Lucas McConnell (University of Cape Town)

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Peer reviewing

Paper