  A search for the resonant production of high-mass photon pairs is presented.
The search focuses on spin-0 and spin-2 resonances with masses between 0.5 and
4.5 TeV, and with a width, relative to the mass, between 1.4E-4 and 5.6E-2. The
data sample corresponds to an integrated luminosity of 12.9 inverse femtobarns
of proton-proton collisions collected with the CMS detector in 2016 at a
center-of-mass energy of 13 TeV. No significant excess is observed relative to
the standard model expectation. The results of the search are combined
statistically with those previously obtained in 2012 and 2015 at sqrt(s) = 8
and 13TeV, respectively, corresponding to integrated luminosities of 19.7 and
3.3 inverse femtobarns, to derive exclusion limits on scalar resonances
produced through gluon-gluon fusion, and on Randall-Sundrum gravitons. The
lower mass limits for Randall-Sundrum gravitons range from 1.95 to 4.45 TeV for
coupling parameters between 0.01 and 0.2. These are the most stringent limits
on Randall-Sundrum graviton production to date.
