  The production of the Higgs boson in association with a single top quark is
sensitive to the relative sign of the coupling parameters describing its
interaction with fermions and gauge bosons. The tHq production mode therefore
provides an good handle on the Yukawa coupling Yt. The first searches for
single-top + Higgs in the H>bbbar, gamma gamma, tau+tau- and W+W- decay
channels are presented, using the full 8 TeV dataset recorded with the CMS
detector. Special emphasis is put on the analyses' peculiarities and their
dominating systematic uncertainties, and a combination of all individual
channels is performed. The analyses are optimized for a scenario of Yt=-1,
which is enhanced by a factor of 13 with respect to the Standard Model
production rate. The observed combined upper exclusion limit is 2.8 times the
cross section of this exotic scenario (2.0 expected).
