  The first measurements of the inclusive and normalised differential cross
sections for the production of single top quarks in association with a W boson
in proton-proton collisions at a centre-of-mass energy of 13.6 TeV are
presented. The data used were recorded with the CMS detector at the LHC during
2022, and correspond to an integrated luminosity of 34.7 $\mathrm{fb}^{-1}$.
The analysed events contain one muon and one electron in the final state. A
cross section of $84.1\pm 2.1(\mathrm{stat})\,^{+9.8}_{-10.2}(\mathrm{syst})\pm
3.3(\mathrm{lumi})$ pb is obtained, consistent with the predictions of the
standard model. For the differential measurements, a fiducial region is defined
according to the detector acceptance. The resulting differential distributions
are unfolded to particle level showing good agreement with the predictions at
next-to-leading order in perturbative quantum chromodynamics.
