What do precision Higgs measurements buy us?
Brian Henning, Xiaochuan Lu, Hitoshi Murayama
TL;DR
Future precision Higgs and electroweak measurements can effectively probe new physics beyond the Standard Model, including scenarios like electroweak baryogenesis and supersymmetric scalar top contributions.
Contribution
This paper evaluates the sensitivity of future precision measurements to new physics using effective field theory, focusing on singlet scalar and scalar top models.
Findings
Higgs and electroweak measurements are sensitive to singlet scalar effects.
Measurements can probe scalar top contributions in the MSSM.
Effective field theory is suitable for analyzing indirect new physics signals.
Abstract
We study the sensitivities of future precision Higgs measurements and electroweak observables in probing physics beyond the Standard Model. Using effective field theory--appropriate since precision measurements are indirect probes of new physics--we examine two well-motivated test cases. One is a tree-level example due to a singlet scalar field that enables the first-order electroweak phase transition for baryogenesis. The other is a one-loop example due to scalar top in the MSSM. We find both Higgs and electroweak measurements are sensitive probes of these cases.
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Taxonomy
TopicsComputational Physics and Python Applications · Cosmology and Gravitation Theories · Particle physics theoretical and experimental studies