We investigate the production of beyond-the-standard-model color-sextet vector bosons at the Large Hadron Collider and their decay into a pair of same-sign top quarks. We demonstrate that the energy of the charged lepton from the top quark semi-leptonic decay serves as a good measure of the top-quark polarization, which, in turn determines the quantum numbers of the boson and distinguishes vector bosons from scalars.
@article{arxiv.1009.5379,
title = {Color Sextet Vector Bosons and Same-Sign Top Quark Pairs at the LHC},
author = {Hao Zhang and Edmond L. Berger and Qing-Hong Cao and Chuan-Ren Chen and Gabe Shaughnessy},
journal= {arXiv preprint arXiv:1009.5379},
year = {2011}
}