T-odd correlations from top-quark CEDM in lepton plus jets top-pair events

Abstract

There exist several recent studies of the top-quark CEDM in the context of searching for CP violating signals in top-quark pair production at the LHC. Most of these studies constrain the CEDM either from deviations in the top-pair cross section from its standard model value, or from T-odd asymmetries in the dimuon channel. Motivated by ATLAS and CMS interest, we extend the study of T-odd asymmetries to the lepton plus jets channel. At the parton level, using MadGraph, we identify the most promising signals and their statistical sensitivity. We find that the signals with larger sensitivity to the CEDM require distinguishing between $b$ and $\bar{b}$ jets and propose a simple way to address this.

12 pages, 2 tables, 1 figure

References in corpus (7)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• FeynRules - Feynman rules made easy
• Complete Higgs Sector Constraints on Dimension-6 Operators
• Measurement of the t t-bar production cross section in pp collisions at sqrt(s) = 7 TeV with lepton + jets final states
• Chromomagnetic Dipole Moment of the Top Quark Revisited
• The Chromoelectric Dipole Moment of the Top Quark in Models with Vector Like Multiplets
• T-odd correlations from CP violating anomalous top-quark couplings revisited

Cited by in corpus (12)

• Constraining the top-Higgs sector of the Standard Model Effective Field Theory
• Is there room for CP violation in the top-Higgs sector?
• Top Down Electroweak Dipole Operators
• Top and bottom tensor couplings from a color octet scalar
• Search for CP violation in t t-bar production and decay in proton-proton collisions at sqrt(s) = 8 TeV
• Search for CP violation using $\mathrm{t}\bar{\mathrm{t}}$ events in the lepton+jets channel in pp collisions at $\sqrt{s}$ = 13 TeV
• T-odd anomalous interactions of the top-quark at the Large Hadron Collider
• Search for CP violating top quark couplings in pp collisions at $\sqrt{s}$ = 13 TeV
• Generic tests of CP-violation in high-$p_{\text{T}}$ multi-lepton signals at the LHC and beyond
• Investigating the Violation of Charge Parity Symmetry Through Top Quark Chromo-Electric Dipole Moments by Using Machine Learning Techniques
• The anomalous $Wtb$ vertex and top-pair production at the LHC
• Improving sensitivity of vectorlike top partner searches with jet substructure