Authors

David Hedin

Document Type

Article

Media Type

Text

Abstract

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 tt production cross section in lepton + jets final states. We quantify this violation using the standard-model extension framework, which predicts a dependence of the tt 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.

Publication Date

6-29-2012

Comments

D0 Collaboration

Department

Department of Physics

Sponsorship

We thank the staffs at Fermilab and collaborating institutions and acknowledge support from the DOE and NSF (USA); CEA and CNRS/IN2P3 (France); MON, Rosatom, and RFBR (Russia); CNPq, FAPERJ, FAPESP, and FUNDUNESP (Brazil); DAE and DST (India); Colciencias (Colombia); CONACyT (Mexico); NRF (Korea); FOM (The Netherlands); STFC and the Royal Society (United Kingdom); MSMT and GACR (Czech Republic); BMBF and DFG (Germany); SFI (Ireland); The Swedish Research Council (Sweden); and CAS and CNSF (China). We also acknowledge support from the Indiana University Center for Spacetime Symmetries (IUCSS).

ISSN

0031-9007

Language

eng

Publisher

American Physical Society

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