Combined Effect of QCD Resummation and QED Radiative Correction to W boson Observables at the Tevatron

TL;DR

A theoretical calculation in which the effects of the initial-state multiple soft-gluon emission and the final-state photonic correction are simultaneously included is presented and its prediction on the transverse mass distribution of the W boson and theTransverse momentum distribution of its decay charged lepton is discussed.

Abstract

A precise determination of the W boson mass at the Fermilab Tevatron requires a theoretical calculation in which the effects of the initial-state multiple soft-gluon emission and the final-state photonic correction are simultaneously included . Here, we present such a calculation and discuss its prediction on the transverse mass distribution of the W boson and the transverse momentum distribution of its decay charged lepton, which are the most relevant observables for measuring the W boson mass at hadron colliders.

Figures (3)

• Figure 1: Transverse mass distribution of $W^+$ boson
• Figure 2: Transverse momentum distributions of $e^+$
• Figure 3: Distributions of $\mathcal{R}$, $\delta_1$ and $\delta_2$