Search for violation of Lorentz invariance in top quark pair production and decay

0384508 - FZÚ 2013 RIV US eng J - Journal Article
Abazov, V. M. - Abbott, B. - Acharya, B.S. - Kupčo, Alexander - Lokajíček, Miloš … Total 397 authors
Search for violation of Lorentz invariance in top quark pair production and decay.
Physical Review Letters. Roč. 108, č. 26 (2012), "261603-1"-"261603-7". ISSN 0031-9007. E-ISSN 1079-7114
R&D Projects: GA MŠMT LA08047; GA MŠMT(CZ) LG12006
Institutional research plan: CEZ:AV0Z10100502
Keywords : D0 * violation Lorentz * pair productionl * decay * Batavia TEVATRON,
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 7.943, year: 2012
http://prl.aps.org/abstract/PRL/v108/i26/e261603

Using data collected with the D0 detector at the Fermilab Tevatron Collider, corresponding to 5.3 fb−1 of integrated luminosity, we search for violation of Lorentz invariance by examining the /ttbar production cross section in lepton+jets final states. We quantify this violation using the standard-model extension framework, which predicts a dependence of the /ttbar production cross section on sidereal time as the orientation of the detector changes with the rotation of the Earth. Within this framework, we measure components of the matrices (cQ)μν33 and (cU)μν33 containing coefficients used to parametrize violation of Lorentz invariance in the top quark sector. Within uncertainties, these coefficients are found to be consistent with zero.
Permanent Link: http://hdl.handle.net/11104/0214133