  The CDF II measurement of $W$ boson mass is at significant ($6.9\,\sigma$)
tension with the Standard Model, and moderate ($4.0\,\sigma$) tension with
recent results from ATLAS. Any attempt to interpret this as a signature of new
physics requires high-precision, robust, falsifiable predictions. The Classical
Analogue to the Standard Model In pseudo-Riemannian spacetime (CASMIR) is an
analogue model predicting $W$ and $Z$ boson masses of
$80.3587(22)~\mathrm{GeV}/c^2$ and $91.1877(35)~\mathrm{GeV}/c^2$ respectively.
During baryon collisions satisfying $\sqrt{s}< 3.09~\mathrm{TeV}$, CASMIR
predicts a color-mediated enhancement of $W$ and $Z$ boson masses, becoming
$80.4340(22)~\mathrm{GeV}/c^2$ and $91.1922(35)~\mathrm{GeV}/c^2$ respectively.
The unenhanced masses are consistent with ATLAS data collected at
$\sqrt{s}=7~\mathrm{TeV}$, and the enhanced masses are consistent with CDF II
data collected at $\sqrt{s}=1.96~\mathrm{TeV}$. According to CASMIR, operation
of the LHC at centre-of-mass energies small compared with $3.09~\mathrm{TeV}$
but large enough for $W$ boson formation should permit ATLAS to replicate the
result from CDF II.
