Top Quark Anomalous Couplings at the High-Luminosity Phase of the LHC

Frédéric Déliot (1, 2) , Miguel C.N. Fiolhais (3, 4) , António Onofre (5)

1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
2 University of Adelaide
3 BMCC - Borough of Manhattan Community College [CUNY]
4 Universidade de Coimbra [Coimbra]
5 Universidade do Minho = University of Minho [Braga]

The combination of the latest and most precise measurements of several top quark properties is presented in this paper in order to establish allowed regions on anomalous contributions to the Lorentz structure of the Wtb vertex. These measurements include single top production cross-sections, W boson helicity fractions and forward–backward asymmetries, both at Tevatron and at the Large Hadron Collider (LHC), up to a center-of-mass energy of 13 TeV. The results obtained at 95% Confidence Level (CL) for the top quark anomalous couplings are compared with the limits extracted from a combination that includes the expected measurements at the future High-Luminosity run of the LHC.

Mots clés: Lorentz; 14.65.Ha; Batavia TEVATRON Coll; coupling: anomaly; top: coupling; Top quark; anomalous couplings; structure; CERN LHC Coll; top: single production; W: helicity; luminosity: high; angular distribution: asymmetry

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]

Frédéric Déliot, Miguel C.N. Fiolhais, António Onofre. Top Quark Anomalous Couplings at the High-Luminosity Phase of the LHC. Mod.Phys.Lett.A, 2019, 34 (18), pp.1950142. ⟨10.1142/S0217732319501426⟩. ⟨hal-01937904⟩