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Publication > 'Top quarks spin correlations with graviton in ADD and RS models at the Large Hadron Collider'

Top quarks spin correlations with graviton in ADD and RS models at the Large Hadron Collider

Author

Arai Masato, Ph.D.	IEAP
Okada Nobuchika	KEK, Japan
Smolek Karel, Ing., Ph.D.	IEAP
Simak Vladislav	FNSPE CTU

Year

2008

Scientific journal

Nucl.Phys.Proc.Suppl. 177-178 (2008) 333-334

Web

http://dx.doi.org/10.1016/j.nuclphysbps.2007.11.151

Abstract

In LHC physics we study the spin correlation of top-antitop pairs production to investigate the production mechanism of heavy quarks[F. Hubard et al. Eur. Phys. J. C 44 (2006) 13]. The s-channel process mediated by graviton Kaluza-Klein modes in ADD model with several extra dimensions[N. Arkani-Hamed, S. Dimopoulos and G. Dvali, Phys. Lett. 429B (1998) 263, hep-ph/9803315] or in the Randall-Sundrum model with only one extra dimension[L. Randall and R. Sundrum, Phys. Rev. Lett. 83 (1999) 3370 hep-ph/9905221] contribute to the top-antitop pair production and affects the resulting top spin correlations. We calculated the full density matrix for the top-antitop pair production. We find a sizable deviation of the top spin correlations from the Standard.

Cite article as:

M. Arai, N. Okada, K. Smolek, V. Simak, "Top quarks spin correlations with graviton in ADD and RS models at the Large Hadron Collider", Nucl.Phys.Proc.Suppl. 177-178 (2008) 333-334 (2008)