Implications of Higgs mass for hidden sector SUSY breaking

TL;DR

This paper explores how the Higgs mass of 125 GeV influences models of hidden sector supersymmetry breaking, suggesting that singlet hidden sectors are favored for naturalness and consistency with observed data.

Contribution

It analyzes the implications of the Higgs mass for different SUSY breaking scenarios, highlighting the preference for singlet hidden sectors in natural models.

Findings

Large scalar masses lead to unnatural weak scale contributions.

Singlet hidden sectors can naturally produce the correct Higgs mass.

String landscape favors models with singlet hidden sectors for naturalness.

Abstract

Hidden sector SUSY breaking where charged hidden sector fields obtain SUSY breaking vevs once seemed common in dynamical SUSY breaking (DSB). In such a case, scalars can obtain large masses but gauginos and A-terms gain loop-suppressed anomaly-mediated contributions which may be smaller by factors of 1/16\pi^2 ~1/160. This situation leads to models such as PeV or mini-split supersymmetry with m(scalars)~ 160 m(gauginos). In order to generate a light Higgs mass m_h~ 125 GeV, the scalar mass terms are required in the 10-100 TeV range, leading to large, unnatural contributions to the weak scale. Alternatively, in gravity mediation with singlet hidden sector fields, then m(scalars)~ m(gauginos)~ A-terms and the large A-terms lift m_h ->125 GeV even for natural values of m(stop1)~ 1-3 TeV. Requiring naturalness, which is probabilistically preferred by the string landscape, then the measured Higgs mass seems to favor singlets in the hidden sector, which can be common in metastable and retrofitted DSB models.