Early spin determination at the LHC?

Details Early spin determination at the LHC? Early spin determination at the LHC?

2011-02-01

arxiv.org/abs/1102.0293v2

Phys.Lett.B699:158-163,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 5 figures, discussion of new scenarios added, to appear in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2011.03.064

If signals of new physics are discovered at the LHC it will be crucial to determine the spin structure of the new model. We discuss a method that can help to address this question with a low integrated luminosity, L=1 fb^-1, at sqrt{s}=14 TeV. Based on the differences in angular distributions of primarily produced particles we show that a significant difference can be observed in the final state jet-pairs rapidity distance. An additional advantage of the method is that it does not rely on any particular structure of the couplings in the decay chain. We simulate samples for models with supersymmetric and UED-like spin structure and show that a distinction can be made early on.

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