A New measurement of the W boson mass at D0

TL;DR

This paper reports a new precise measurement of the W boson mass using forward detector data from D0 at Fermilab, employing multiple techniques and combining with previous results to improve accuracy.

Contribution

First measurement of the W boson mass using electron candidates in the forward region ($1.5<| ext{eta}|<2.5$) at D0, enhancing the overall precision.

Findings

Measured W mass with multiple techniques including transverse mass and electron transverse momentum.

Combined forward and central detector results for a more precise W mass value.

Improved the accuracy of the W boson mass measurement at Fermilab.

Abstract

We present a new measurement of the $W$ mass using the $W\to e\nu$ data from the D\O forward detectors at the Fermilab Tevatron $p \bar p$ Collider. This is the first measurement of the $W$ mass with electron candidates in the range $1.5 < \mid \eta \mid < 2.5$. We present measurements of the $W$ mass using the transverse mass, the electron transverse momentum and the neutrino transverse momentum, and the combined result using all three techniques. The combination of the forward detector measurement with the previous measurements using the central detector gives a new precise measurement of the $W$ mass from D\O.