Measurement of the W Boson Mass and Width at the D0 experiment

TL;DR

This paper reports a precise measurement of the W boson mass and width using data from the D0 detector at Fermilab, employing likelihood fits on various kinematic distributions to improve constraints on the Standard Model.

Contribution

It provides the most accurate direct measurements of W boson mass and width at the time, utilizing advanced statistical methods and data analysis techniques.

Findings

Precise W boson mass measurement constrains the Standard Model.

Direct W width measurement achieved with high accuracy.

Results set stringent limits on the Higgs boson mass.

Abstract

I present a precise measurement of W boson mass measurement in electron decay channel using data collected by the D0 detector at the Fermilab Tevatron Collider. A binned likelihood fit method is used to extract the mass information from the transverse mass, the electron transverse momentum and missing transverse energy distributions. I also present a precise direct measurement of W boson width using the events with large transverse mass. The W mass result can be used to put stringent indirect limits on the Standard Model Higgs boson mass.