Signals for supersymmetry in photon photon scattering
Signals for supersymmetry in photon photon scattering
We introduce the theoretical framework for analysing photon photon scattering due to electron positron collisions. The structure function Fγ2 is introduced along with its corresponding evolution using the DGLAP equations. The possible supersymmetric contributions to this evolution are introduced with relevance to the next generation of high energy linear colliders.
We numerically evolve virtual photon parton densities up to the SUSY threshold and higher using coupled inhomogeneous DGLAP differential equations. An effort is made to include the squark threshold effect in such a way that both the renormalization group equations are satisfied and the perturbative calculation is reproduced. The difference of Fγ2 due to SUSY dependent splitting functions is examined. Virtual SUSY corrections to this evolution procedure are then examined below and above the squark threshold.
Finally a calculation of the amount events we might expect for chargino production is carried out. The feasibility of this process as a signal for SUSY can then be assessed.
University of Southampton
Weston, Luke
120951d3-a48f-4346-9de0-4a339cc704d3
2001
Weston, Luke
120951d3-a48f-4346-9de0-4a339cc704d3
Weston, Luke
(2001)
Signals for supersymmetry in photon photon scattering.
University of Southampton, Doctoral Thesis.
Record type:
Thesis
(Doctoral)
Abstract
We introduce the theoretical framework for analysing photon photon scattering due to electron positron collisions. The structure function Fγ2 is introduced along with its corresponding evolution using the DGLAP equations. The possible supersymmetric contributions to this evolution are introduced with relevance to the next generation of high energy linear colliders.
We numerically evolve virtual photon parton densities up to the SUSY threshold and higher using coupled inhomogeneous DGLAP differential equations. An effort is made to include the squark threshold effect in such a way that both the renormalization group equations are satisfied and the perturbative calculation is reproduced. The difference of Fγ2 due to SUSY dependent splitting functions is examined. Virtual SUSY corrections to this evolution procedure are then examined below and above the squark threshold.
Finally a calculation of the amount events we might expect for chargino production is carried out. The feasibility of this process as a signal for SUSY can then be assessed.
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Published date: 2001
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Local EPrints ID: 467022
URI: http://eprints.soton.ac.uk/id/eprint/467022
PURE UUID: b3a53d71-6754-4a8c-bcad-6bf68a762719
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Date deposited: 05 Jul 2022 08:08
Last modified: 16 Mar 2024 20:56
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Author:
Luke Weston
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