Probing top quark anomalous moments in $W$ boson associated single top quark production at the LHC using polarization and spin correlation

Abstract

We study the $W$ boson associated single top quark production at the Large Hadron Collider (LHC) to probe anomalous chromo-magnetic and chromo-electric moments of the top quark with the help of polarization and spin correlation observables besides the cross-section in the leptonic final state. We reconstruct the two neutrinos in the final state using the $M_{T2}$ assisted on-shell (MAOS) reconstruction method to measure the polarization and spin correlation asymmetries of the top quark and the $W$ boson. We estimate the limits on the anomalous moments in a detector-level simulation considering possible backgrounds for a few sets of integrated luminosities and examined the effect of systematic uncertainties.

15 pages, 9 captioned figures, 2 tables

References in corpus (18)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Single-top Wt-channel production matched with parton showers using the POWHEG method
• Two-loop soft anomalous dimensions for single top quark associated production with a W- or H-
• Single-top hadroproduction in association with a W boson
• Single top quark production at LHC with anomalous Wtb couplings
• Evidence for associated production of a single top quark and W boson in pp collisions at sqrt(s) = 7 TeV
• Search for New Physics via Single Top Production at the LHC
• M_T2-assisted on-shell reconstruction of missing momenta and its application to spin measurement at the LHC
• A model independent spin analysis of fundamental particles using azimuthal asymmetries
• Higher-order corrections for $tW$ production at high-energy hadron colliders
• Pinning down top dipole moments with ultra-boosted tops
• Chromomagnetic Dipole Moment of the Top Quark Revisited
• Breaking down the entire spectrum of spin correlations of a pair of particles involving fermions and gauge bosons
• Combination of the W boson polarization measurements in top quark decays using ATLAS and CMS data at $\sqrt{s}=$ 8 TeV
• Anomalous chromomagnetic moment of quarks
• A Renyi Quantum Null Energy Condition: Proof for Free Field Theories
• Revisiting the top quark chromomagnetic dipole moment in the SM
• On two-body and three-body spin correlations in leptonic $t\bar{t}Z$ production and anomalous couplings at the LHC

Cited by in corpus (1)

• Measurement of inclusive and differential cross sections of single top quark production in association with a W boson in proton-proton collisions at $\sqrt{s}$ = 13.6 TeV