A search is performed for W bosons decaying to a top and a bottom quark in the all-hadronic final state,
in proton-proton collisions at a center-of-mass energy of 13 TeV. The analyzed data were collected by
the CMS experiment between 2016 and 2018 and correspond to an integrated luminosity of 137 fb−1.
Deep neural network algorithms are used to identify the jet initiated by the bottom quark and the
jet containing the decay products of the top quark when the W boson from the top quark decays
hadronically. No excess above the estimated standard model background is observed. Upper limits on
the production cross sections of W bosons decaying to a top and a bottom quark are set. Both left- and
right-handed W bosons with masses below 3.4 TeV are excluded at 95% confidence level, and the most
stringent limits to date on W bosons decaying to a top and a bottom quark in the all-hadronic final state
are obtained.