Updated Combination of CDF and D0 Results for the Mass of the W Boson

TL;DR

This paper combines multiple measurements from Tevatron experiments to provide a precise estimate of the W boson mass, updating previous results with new data and corrections.

Contribution

It presents a comprehensive combination of W boson mass measurements from various Tevatron runs, incorporating corrections for analysis inconsistencies to improve precision.

Findings

Tevatron average W boson mass: 80,420 ± 31 MeV

Inclusion of recent D0 1 fb^(-1) electron channel results

Corrections applied for parton distribution functions and electroweak assumptions

Abstract

We summarize and combine the results on the direct measurements of the mass of the W boson in data collected by the Tevatron experiments CDF and D0 at Fermilab. Results from CDF Run-0 (1988-1889) and Run-I (1992-1995) have been combined with D0 results from Run-I, the CDF 200 pb^(-1) published results from the first period of Run-II (2001-2004) and the recent 1 fb^(-1) result in the electron channel from D0 (2002-2006). The results are corrected for any inconsistencies in parton distribution functions and assumptions about electroweak parameters used in the different analyses. The resulting Tevatron average for the mass of the W boson is M(W) = 80,420+31 MeV.