Light Higgsinos for electroweak naturalness in mirage-mediated high-scale supersymmetry

Abstract

Mirage mediation realized in the Kachru-Kallosh-Linde-Trivedi (KKLT) flux compactification can naturally suppress the up-type Higgs soft mass at low energy scales. As a result, compared to the conventional scenarios, the degree of electroweak fine-tuning can be reduced further up to by a loop factor if the Higgsinos are much lighter than the heavy Higgs doublet. Interestingly, this feature holds even in high-scale supersymmetry as long as the gauge coupling unification, which is required as a prerequisite for mirage mediation, accommodates such light Higgsinos. Under the experimental constraints on the observed Higgs boson, it turns out that mirage mediation can exhibit low electroweak fine-tuning better than a few percent for stops between about 2 and 6 TeV, i.e., at the same level as in the weak scale supersymmetry, if the Higgsinos are around or below a few hundred GeV.

1+18 pages, 3 figures, 1 table, 1 appendix; discussion extended, references added, matches published version

References in corpus (14)

• Combined Measurement of the Higgs Boson Mass in $pp$ Collisions at $\sqrt{s}=7$ and 8 TeV with the ATLAS and CMS Experiments
• Precise Higgs mass calculations in (non-)minimal supersymmetry at both high and low scales
• TeV Scale Mirage Mediation and Natural Little SUSY Hierarchy
• Supersymmetry Breaking and Moduli Stabilization with Anomalous U(1) Gauge Symmetry
• Deflected Mirage Mediation: A Framework for Generalized Supersymmetry Breaking
• Search for top squark pair production using dilepton final states in pp collision data collected at $\sqrt{s}=$ 13 TeV
• Moduli Stabilization and Supersymmetry Breaking in Deflected Mirage Mediation
• Axionic Mirage Mediation
• High-scale Supersymmetry, the Higgs Mass and Gauge Unification
• The LHC higgsino discovery plane for present and future SUSY searches
• Sparticle masses in deflected mirage mediation
• Search for top squarks in events with a Higgs or $Z$ boson using 139 fb${}^{-1}$ of $pp$ collision data at $\sqrt{s}=13$ TeV with the ATLAS detector
• Analysis of the TeV-scale mirage mediation with heavy superparticles
• Light Higgsino for Gauge Coupling Unification

Cited by in corpus (1)

• Mixed modulus and anomaly mediation in light of the muon $g-2$ anomaly