SMEFT chromomagnetic dipole operator contributions to $$t{{\bar{t}}}$$ t t ¯ production at approximate NNLO in QCD

• Published in: The European physical journal. C, Particles and fields Vol. 84; no. 6; pp. 1 - 13
• Main Authors: Nikolaos Kidonakis, Alberto Tonero
• Format: Journal Article
• Language: English
• Published: SpringerOpen 01.06.2024

Abstract We study higher-order QCD corrections for the production of a top–antitop quark pair ( $$t{{\bar{t}}}$$ t t ¯ production) at the Large Hadron Collider in the Standard Model Effective Field Theory. We consider effects of new physics parametrized by the top-quark chromomagnetic dipole operato...