Abstract
AbstractThe compatibility of W-boson mass measurements performed by the ATLAS, LHCb, CDF, and D0 experiments is studied using a coherent framework with theory uncertainty correlations. The measurements are combined using a number of recent sets of parton distribution functions (PDF), and are further combined with the average value of measurements from the Large Electron–Positron collider. The considered PDF sets generally have a low compatibility with a suite of global rapidity-sensitive Drell–Yan measurements. The most compatible set is CT18 due to its larger uncertainties. A combination of all $$m_W$$
m
W
measurements yields a value of $$m_W = 80{,}394.6 \pm 11.5$$
m
W
=
80
,
394.6
±
11.5
MeV with the CT18 set, but has a probability of compatibility of 0.5% and is therefore disfavoured. Combinations are performed removing each measurement individually, and a 91% probability of compatibility is obtained when the CDF measurement is removed. The corresponding value of the W boson mass is $$80{,}369.2 \pm 13.3$$
80
,
369.2
±
13.3
MeV, which differs by $$3.6\sigma $$
3.6
σ
from the CDF value determined using the same PDF set.
Funder
European Research Council
Helmholtz Association
UKRI Future Leaders Fellowship
Publisher
Springer Science and Business Media LLC
Cited by
4 articles.
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