Precise top mass determination using lepton distribution at LHC

TL;DR

This paper introduces a novel, boost-invariant method using lepton energy distribution for precise top quark mass measurement at the LHC, demonstrating its effectiveness through simulation analysis.

Contribution

The paper proposes a new theoretically well-defined top mass measurement method based on lepton energy distribution, with a focus on boost invariance and uncertainty control.

Findings

Method achieves good control of major uncertainties.

Simulation confirms effective top mass reconstruction.

Applicable to lepton+jets channel at leading order.

Abstract

We present a new method to measure a theoretically well-defined mass of the top quark at the LHC. This method uses lepton energy distribution and has a boost-invariant nature. We perform a simulation analysis of the top mass reconstruction with this method for tt -> lepton+jets channel at the leading order. We estimate several major uncertainties in the top mass determination and find that they are under good control.