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

NLO Rutherford Scattering and Energy Loss in a QGP

6 Jul 2016, 10:20
20m
4A (Kramer Law building)

4A

Kramer Law building

UCT Middle Campus Cape Town
Oral Presentation Track B - Nuclear, Particle and Radiation Physics Nuclear, Particle and Radiation Physics (2)

Speaker

Mr Abdullah Ibrahim (University of Cape Town)

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>

We calculate to next-to-leading order the cross section of a massless electron scattered off of a static point charge, in which we use dimensional regularization to tame the UV divergences and electron and photon masses to regularize both soft and collinear divergences. We include all NLO diagrams from QED such as the vertex correction, vacuum polarization, electron self energy, box correction and bremsstrahlung (both soft and hard). We find that all UV divergences cancel in the MS-bar renormalization scheme, which we’ve chosen in order to avoid any additional divergences in the limit of taking the mass of the electron to 0. When taking the photon mass to 0, the IR divergences are canceled through an application of the Bloch-Nordsieck theorem, while the collinear divergences are canceled by the more general KLN theorem. We then investigate the importance of the BN vs. KLN theorems in various theories as we work towards computing the NLO corrections to the energy loss of a QCD particle propagating in a quark-gluon plasma.

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

Yes

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

Yes

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

Dr. W. A. Horowitz
wahorowitz@gmail.com
UCT

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)?

Yes

Primary author

Mr Abdullah Ibrahim (University of Cape Town)

Co-author

Dr William Horowitz (University of Cape Town)

Presentation Materials

Peer reviewing

Paper