Top quark spin correlations in the Randall-Sundrum model at the CERN Large Hadron Collider
Abstract
In the Randall-Sundrum model, we study top-antitop pair production and top spin correlations at the Large Hadron Collider. In addition to the Standard Model processes, there is a new contribution to the top-antitop pair production process mediated by graviton Kaluza-Klein modes in the s-channel. We calculate the density matrix for the top-antitop pair production including the new contribution. With a reasonable parameter choice in the Randall-Sundrum model, we find a sizable deviation of the top-antitop pair production cross section and the top spin correlations from those in the Standard Model. In particular, resonant productions of the graviton Kaluza-Klein modes give rise to a remarkable enhancement of such a deviation.
Keywords
Cite
@article{arxiv.hep-ph/0701155,
title = {Top quark spin correlations in the Randall-Sundrum model at the CERN Large Hadron Collider},
author = {Masato Arai and Nobuchika Okada and Karel Smolek and Vladislav Simak},
journal= {arXiv preprint arXiv:hep-ph/0701155},
year = {2008}
}
Comments
18 pages, 7 figures, discussion added, typos corrected, references added, version accepted by PRD