# T-odd anomalous interactions of the top-quark at the Large Hadron Collider

## TL;DR

This paper investigates T-odd CP-violating interactions of the top quark at the LHC using decay product momenta, assessing sensitivity across different energies and luminosities to constrain new physics scales.

## Contribution

It introduces a method to probe T-odd top-quark interactions via observables constructed from decay products at the LHC, covering a wide range of CP-violating scales and luminosities.

## Key findings

- Sensitivity estimates for 13 TeV LHC with various luminosities.
- Projected constraints for HL-LHC at 14 TeV with high luminosities.
- Analysis covers CP-violating scales from $M_W$ to 2 TeV.

## Abstract

We study the effects of T-odd interactions of top-quark via the pair production of top-quark in the semileptonic detection modes at the Large Hadron Collider by means of the T-odd observables constructed through the momenta of the observed decay products of the top (and anti-top)-quark for a wide range of CP-violating scale $\Lambda$. Estimates on the sensitivities of the coupling strength of such interactions for 13 TeV LHC energy with $\int \mathcal L dt$ = 36.1 fb$^{-1}$, 140 fb$^{-1}$ and for HL-LHC with 14 TeV energy with integrated luminosities of 0.3 ab$^{-1}$, 1 ab$^{-1}$, 2 ab$^{-1}$ and 3 ab$^{-1}$ are also presented for $\Lambda$ ranging between $M_W$ and 2 TeV.