Top quark spin correlations in theories with large extra dimensions at the CERN Large Hadron Collider

Journal Article · Wed Dec 01 00:00:00 EST 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.115015· OSTI ID:20698168

Arai, Masato ^[1]; Okada, Nobuchika ^[2]; Smolek, Karel ^[3]; Simak, Vladislav ^[1]

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1. Institute of Physics, AS CR, 182 21, Prague 8 (Czech Republic)
2. Theory Division, KEK, Tsukuba, Ibaraki, 305-0801 (Japan)
3. Institute of Experimental and Applied Physics, Czech Technical University in Prague, 128 00, Prague 2 (Czech Republic)

In theories with large extra dimensions, we study the top-spin correlations at the Large Hadron Collider. The s-channel process mediated by graviton Kaluza-Klein modes contributes to the top-antitop pair production in addition to the standard model processes, and affects the resultant top-spin correlations. We calculated the full density matrix for the top-antitop pair production. With the fundamental scale of the extra dimensional theory below 2 TeV, we find a sizable deviation of the top-spin correlations from the standard model one.

• OSTI ID: 20698168
• Journal Information: Physical Review. D, Particles Fields, Vol. 70, Issue 11; Other Information: DOI: 10.1103/PhysRevD.70.115015; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CERN LHC
CORRELATIONS
DENSITY MATRIX
GRAVITONS
KALUZA-KLEIN THEORY
PAIR PRODUCTION
S CHANNEL
SPIN
STANDARD MODEL
T QUARKS
TEV RANGE