Effects of the Noncommutative Standard Model on WW scattering

Details Effects of the Noncommutative Standard Model on WW scattering Effects of the Noncommutative Standard Model on WW scattering

2008-11-26

arxiv.org/abs/0811.4218v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

46 pages, 17 figures

Scientific paper

We examine W pair production in the Noncommutative Standard Model constructed with the Seiberg-Witten map. Consideration of partial wave unitarity in the reactions WW to WW and e+e- to WW shows that the latter process is more sensitive and that tree-level unitarity is violated when scattering energies are of order a TeV and the noncommutative scale is below about a TeV. We find that WW production at the LHC is not sensitive to scales above the unitarity bounds. WW production in e+e- annihilation, however, provides a good probe of such effects with noncommutative scales below 300-400 GeV being excluded at LEP-II, and the ILC being sensitive to scales up to 10-20 TeV. In addition, we find that the ability to measure the helicity states of the final state W bosons at the ILC provides a diagnostic tool to determine and disentangle the different possible noncommutative contributions.

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