Jun 24 – 25, 2017
Hong Kong University of Science and Technology (HKUST)
Asia/Hong_Kong timezone

Testing naturalness through precision measurements

Jun 24, 2017, 8:45 PM
15m
Hong Kong University of Science and Technology (HKUST)

Hong Kong University of Science and Technology (HKUST)

Speaker

Jeremy Bernon

Description

Symmetry-based solutions of the hierarchy problem generically predict new states to cancel the Standard Model one-loop quadratic divergence of the Higgs mass. Phenomenological investigations are generally focused on the top-partners, expected to be at the TeV scale by naturalness arguments, and with model-dependent quantum numbers. While direct LHC searches have so far turned empty-handed regarding the presence of such new particles, loop-induced observables provide complementary probes and may prove essential to fully characterize their properties. In this work, we evaluate the contributions of a selection of top-partners representations to quantities such as the Peskin-Teukachi parameters and the loop-induced Higgs couplings. In particular, we investigate whether such observables can provide a test of the required relation between the top Yukawa and top-partner couplings needed to insure the loop cancellation.

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