Comment on "Supersoft Top Squarks"

TL;DR

This paper critically examines the mechanism proposed in 'Supersoft Top Squarks' for reducing top squark contributions to the Higgs mass, showing it is essentially equivalent to a previously discussed approach, and explores more general matrix forms that achieve similar effects.

Contribution

It demonstrates the equivalence of the supersoft mechanism to earlier methods and discusses broader matrix configurations for soft mass terms.

Findings

The supersoft mechanism is similar to previous approaches in leading order.

Generalized Yukawa and soft mass matrices can produce the same effects.

The paper clarifies the relationship between different supersymmetry breaking mechanisms.

Abstract

It is shown that the mechanism to soften contributions of top squarks to the Higgs mass, discussed in "Supersoft Top Squarks", Phys. Rev. Lett. 125, no.15, 151801 (2020), is very similar, with identical result in the leading order, to the one discussed previously by the author in "Loop Suppressed Electroweak Symmetry Breaking", Phys. Rev. D 95, no.1, 015002 (2017). More general forms of Yukawa and soft mass squared matrices providing the same effect are also discussed.