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Split Supersymmetry
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The naturalness criterion applied to the cosmological constant implies a new-physics threshold at 10^-3 eV. Either the naturalness criterion fails, or this threshold does not influence particle dynamics at higher energies. It has been suggested that the Higgs naturalness problem may follow the same fate. We investigate this possibility and, abandoning the hierarchy problem, we use unification and dark matter as the only guiding principles. The model recently proposed by Arkani-Hamed and Dimopoulos emerges as a very interesting option. We study it in detail, analysing its structure, and the conditions for obtaining unification and dark matter.
Forward citations
Cited by 15 Pith papers
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SUSY meets SMEFT: Complete one-loop matching of the general MSSM
Complete one-loop matching of the general MSSM onto SMEFT in the Warsaw basis, including all SUSY-governed correlations among Wilson coefficients.
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Heavy-element paleodetectors for Higgsino dark matter
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Search for heavy long-lived charged particles with level-1 trigger scouting data from proton-proton collisions at $\sqrt{s}$ = 13.6 TeV
A triggerless CMS dataset yields first low-speed heavy charged particle limits, excluding fiducial cross sections down to 3.5 fb.
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Search for long-lived particles using displaced vertices with low-momentum tracks in proton-proton collisions at $\sqrt{s}$ = 13 TeV
A displaced-vertex search for compressed-spectrum long-lived particles excludes top squarks up to about 1100 GeV and wino-like neutralinos up to about 550 GeV, the strongest limits on these benchmark models.
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Discovering the Higgsino at CTAO-North within the Decade
CTAO-North, using high-zenith-angle observations, could discover 1.1 TeV thermal higgsino dark matter by 2030 for several plausible Galactic Center density profiles, earlier than CTAO-South.
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Induced-Gravity Palatini-Like Higgs Inflation in Supergravity Confronts ACT DR6
A Palatini-supergravity Higgs-inflation model with induced gravity predicts a scalar spectral index ns≈0.972-0.974, consistent with ACT DR6, and favors split supersymmetry with gravitino mass 40-60 PeV.
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Implications of Higgs mass for hidden sector SUSY breaking
The 125 GeV Higgs mass, under naturalness and landscape priors, favors gravity mediation through hidden sector singlets with large A-terms over charged hidden sector models with loop-suppressed A-terms.
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The curtain lowers on directly detectable higgsino dark matter
Using LZ2024 limits, the paper derives new lower bounds on gaugino masses and upper bounds on higgsino mass splittings in decoupled-MSSM higgsino dark matter scenarios, plus projections for the neutrino fog.
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Higgs Assisted Razor Search for Higgsinos at a 100 TeV pp Collider
A Higgs-assisted razor search with ML for Higgsino NLSPs decaying to Bino LSP via Z/h at 100 TeV projects 5σ discovery to 1.4 TeV Higgsino mass (Bino ~0.9 TeV) with 3000 fb^{-1}.
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The Standard Model partial unification scale as a guide to new physics model building
The Standard Model partial unification scale of non-Abelian gauge couplings at 2.8e16 GeV serves as the natural full unification scale M_X for new physics models where corrections to those couplings are equal or nearly equal.
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Split supersymmetry and hybrid inflation in light of Atacama Cosmology Telescope DR6 data
An update of mu-term hybrid inflation shows that a tuned soft-SUSY parameter B makes the scalar spectral index match ACT DR6, with tensor-to-scalar ratio of order 10^-3 to 10^-2 and a 2 TeV wino dark matter candidate.
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Renormalization Effects on Electric Dipole Moments in Electroweakly Interacting Massive Particle Models
Computes one-loop anomalous dimensions for EDM-generating operators in triplet and 5-plet Majorana fermion models, reporting O(10)% enhancement for triplet and factor greater than 2 for 5-plet.
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In Pursuit of New Paradigms: TASI 2024
A review of theoretical paradigms, from pNGB Higgs to SUSY, that attempt to explain the smallness of the Higgs mass.
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Lectures on Naturalness, String Landscape and Multiverse
Lecture notes providing a technical introduction to naturalness problems and the string theory landscape for graduate students.
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