  Upcoming cosmic shear analyses will precisely measure the cosmic matter
distribution at low redshifts. At these redshifts, the matter distribution is
affected by galaxy formation physics, primarily baryonic feedback from star
formation and active galactic nuclei. Employing measurements from the
Magneticum and IllustrisTNG simulations and a dark matter + baryon (DMB) halo
model, this paper demonstrates that Sunyaev-Zel'dovich (SZ) effect observations
of galaxy clusters, whose masses have been calibrated using weak gravitational
lensing, can constrain the baryonic impact on cosmic shear with statistical and
systematic errors subdominant to the measurement errors of DES-Y3 and LSST-Y1.
We further dissect the contributions from different scales and halos with
different masses to cosmic shear, highlighting the dominant role of SZ clusters
at scales critical for cosmic shear analyses. These findings suggest a
promising avenue for future joint analyses of Cosmic Microwave Background (CMB)
and lensing surveys.
