Physics at the FCC-ee

Abstract

The physics program accessible in $e^{+}{e}^{-}$ collisions at the Future Circular Collider (FCC-ee) is summarized. The FCC-ee aims at collecting multi-ab${}^{-1}$ integrated luminosities in $e^{+}{e}^{-}$ at $\sqrt{s}$ = 90, 160, 240, and 350 GeV, yielding 10${}^{12}$ Z bosons, 10${}^8$ W${}^{+}$W${}^{-}$ pairs, 10${}^6$ Higgs bosons and $4\cdot 10^5$ top-quark pairs per year. Such huge data samples combined with a $\mathcal{O}(100\mathrm{keV})$ c.m. energy uncertainty will allow for Standard Model measurements with unparalleled precision and searches for new physics in regions not probed so far. The FCC-ee will be able to (i) indirectly discover new particles coupling to the Higgs and electroweak bosons up to scales $\Lambda \approx$ 7 and 100 TeV; (ii) perform competitive SUSY tests at the loop level in regions beyond the LHC reach; and (iii) achieve the best potential in direct collider searches for dark matter and sterile neutrinos with masses below 60 GeV.

8 pages, 8 figures. Proceedings 17th Lomonosov conference on Elementary Particle Physics, Moscow, Aug. 2015. World Scientific, to appear. arXiv admin note: text overlap with arXiv:1601.06640.

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