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Pseudo-observables in axial gauge

Pseudo-observables in axial gauge
Pseudo-observables in axial gauge
We have given a first application of the Axial gauge à la Dams and Kleiss to the Standard Model (SM) physics at the LHC. We have focused on the issue of providing a well-behaved signal definition in presence of potentially strong gauge cancellations at high energies. As a first illustration, we have analysed the production of WZ vector-boson pairs, which gives rise to four final-state fermions. Purely leptonic final states, pp->lvll, have been numerically investigated in the region of high center-of-mass energies and large scattering angles, particularly sensitive to gauge dependences. We have found that the Axial gauge is the appropriate framework to recover a meaningful separation of signal and irreducible background over the full energy domain.
1434-6044
239-251
Accomando, Elena
8ebc75d7-bd92-4f70-a974-7bc15ebf088f
Accomando, Elena
8ebc75d7-bd92-4f70-a974-7bc15ebf088f

Accomando, Elena (2008) Pseudo-observables in axial gauge. The European Physical Journal C, 54 (2), 239-251. (doi:10.1140/epjc/s10052-007-0508-z).

Record type: Article

Abstract

We have given a first application of the Axial gauge à la Dams and Kleiss to the Standard Model (SM) physics at the LHC. We have focused on the issue of providing a well-behaved signal definition in presence of potentially strong gauge cancellations at high energies. As a first illustration, we have analysed the production of WZ vector-boson pairs, which gives rise to four final-state fermions. Purely leptonic final states, pp->lvll, have been numerically investigated in the region of high center-of-mass energies and large scattering angles, particularly sensitive to gauge dependences. We have found that the Axial gauge is the appropriate framework to recover a meaningful separation of signal and irreducible background over the full energy domain.

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Published date: March 2008

Identifiers

Local EPrints ID: 154361
URI: https://eprints.soton.ac.uk/id/eprint/154361
ISSN: 1434-6044
PURE UUID: b72b99c6-c2c2-4631-9c14-b28d3ce8a8c7

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Date deposited: 25 May 2010 08:24
Last modified: 19 Jul 2019 23:21

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