Top Quark Forward-Backward Asymmetry in the Large Invariant Mass Region
Abstract
The forward-backward asymmetry (FBA) in top-pair production that was observed in 2008 gets a boost in a recent CDF publication. Not only has the FBA further been confirmed, but also distributional preferences are shown. Strikingly, the FBA is the most sizable in the large invariant mass region and in the large rapidity difference region. Here we used our previously proposed -channel exchanged boson to explain the new observations. We show that a new particle exchanged in the -channel generically gives rise to such observations. Furthermore, we show that the proposed can be directly produced in association with a top quark at the Tevatron and the LHC. We perform a signal-background analysis and show that such a is readily observed at the Tevatron with a 10 fb luminosity and at the LHC-7 with just a 100 pb luminosity.
Keywords
Cite
@article{arxiv.1101.1445,
title = {Top Quark Forward-Backward Asymmetry in the Large Invariant Mass Region},
author = {Kingman Cheung and Tzu-Chiang Yuan},
journal= {arXiv preprint arXiv:1101.1445},
year = {2015}
}
Comments
A whole new section about implications at the Tevatron and the LHC is added. A few new references. 15 pages, 5 figures