Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-01-19
Phys.Rev.D75:095008,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pages, 7 figures, discussion added, typos corrected, references added, version accepted by PRD
Scientific paper
10.1103/PhysRevD.75.095008
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.
Arai Masato
Okada Nobuchika
Simak Vladislav
Smolek Karel
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