Nonstandard, strongly interacting spin one $t \bar t$ resonances

Details Nonstandard, strongly interacting spin one $t \bar t$ resonances Nonstandard, strongly interacting spin one $t \bar t$ resonances

2008-10-20

arxiv.org/abs/0810.3635v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 4 figures, talk presented at the International Conference on High Energy Physics, ICHEP08, Philadelphia, Aug 2008. La

Scientific paper

Examining theories with an extended strong interaction sector such as axigluons or flavour universal colorons, we find that the constraints obtained from the current data on $t \bar t$ production at the Tevatron are in the range of $\sim {\cal O}$ TeV and thus competitive with those obtained from the dijet data. We point out that for large axigluon/coloron masses, the limits on the coloron mass may be different than those for the axigluon even for $\cot \xi = 1$. We also compute the expected forward-backward asymmetry for the case of the axigluons which would allow it to be discriminated against the SM as also the colorons. We further find that at the LHC, the signal should be visible in the $t \bar t$ invariant mass spectrum for a wide range of axigluon and coloron masses that are still allowed. We point out how top polarisation may be used to further discriminate the axigluon and coloron case from the SM as well as from each other.

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