Constraints on W Prime Models for the ttbar Asymmetry

Details Constraints on W Prime Models for the ttbar Asymmetry Constraints on W Prime Models for the ttbar Asymmetry

2011-11-28

arxiv.org/abs/1111.6576v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at the SUSY 2011 conference. 5 pages, 3 figures

Scientific paper

We discuss if the Tevatron ttbar asymmetry can be explained by T-channel exchange of a W' gauge boson coupling to down and top quarks. In a spontaneously broken gauge theory, such a W' is necessarily accompanied by a Z' at a similar mass scale. Null results from Tevatron searches for dijet and dilepton resonances imply large mass splitting between the $W'$ and $Z'$. We argue that such splitting can only be accomplished if the gauge symmetry is broken by a scalar in a large dimension representation of the gauge group, for which no perturbative description exists.

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