Publikace
> 'Top quark spin correlations in the Randall-Sundrum model at the CERN Large Hadron Collider'
Top quark spin correlations in the Randall-Sundrum model at the CERN Large Hadron Collider
Autor
Arai Masato
| High Energy Physics Division, Department of Physical Sciences, University of Helsinki and Helsinki Institute of Physics
|
Okada Nobuchika
| KEK, Japan
|
Smolek Karel, Ing., Ph.D.
| UTEF
|
Šimák Vladislav
| FJFI ČVUT
|
Rok
2007
Časopis
Phys. Rev. D 75 (2007) 095008
Web
Obsah
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.
Příklad citace článku:
M. Arai, N. Okada, K. Smolek, V. Šimák, "Top quark spin correlations in the Randall-Sundrum model at the CERN Large Hadron Collider", Phys. Rev. D 75 (2007) 095008 (2007)