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Low fine tuning in the MSSM with higgsino dark matter and unification constraints
High Energy Physics - Phenomenology · Submitted 6 Feb 2014
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim There, we find that the fine tuning can be reduced to the level of a few percent.
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The abstract, sentence by sentence
We examine the issue of fine tuning in the MSSM with GUT-scale boundary conditions. We identify specific unification patterns and mass relations that can lead to a significant lowering of the fine tuning due to gauginos, scalars, and the \mu\ parameter, relative to the simplest unification conditions. We focus on a phenomenologically interesting region that is favored by the Higgs mass and the relic density where the dark matter is a nearly pure higgsino with mass given by \mu~1 TeV while the scalars and gauginos have masses in the multi-TeV regime. There, we find that the fine tuning can be reduced to the level of a few percent. Despite the gluino mass in the ballpark of 2 TeV, resulting mass spectra will be hard to explore at the LHC, but good prospects for detection come from dark matter direct detection experiments. Finally, we demonstrate with a specific example how the conditions and mass relations giving low fine tuning can originate in the context of supergravity and Grand Unified Theories.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We examine the issue of fine tuning in the MSSM with GUT-scale boundary conditions. | contribution 0.56 | 0.82 | 0.03 | unclear 0.70 |
| s1 | We identify specific unification patterns and mass relations that can lead to a significant lowering of the fine tuning due to gauginos, scalars, and the \mu\ parameter, relative to the simplest unification conditions. | contribution 0.88 | 0.92 | 0.36 | asserted 0.61 |
| s2 | We focus on a phenomenologically interesting region that is favored by the Higgs mass and the relic density where the dark matter is a nearly pure higgsino with mass given by \mu~1 TeV while the scalars and gauginos have masses in the multi-TeV regime. | contribution 0.82 | 0.48 | 0.10 | asserted 0.95 |
| s3 | There, we find that the fine tuning can be reduced to the level of a few percent. | result 1.00 | 0.95 | 0.58 | asserted 0.90 |
| s4 | Despite the gluino mass in the ballpark of 2 TeV, resulting mass spectra will be hard to explore at the LHC, but good prospects for detection come from dark matter direct detection experiments. | interpretation 0.74 | 0.77 | 0.09 | asserted 0.87 |
| s5 | Finally, we demonstrate with a specific example how the conditions and mass relations giving low fine tuning can originate in the context of supergravity and Grand Unified Theories. | contribution 0.90 | 0.93 | 0.11 | asserted 1.00 |
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The paper
Original abstract
We examine the issue of fine tuning in the MSSM with GUT-scale boundary conditions. We identify specific unification patterns and mass relations that can lead to a significant lowering of the fine tuning due to gauginos, scalars, and the \mu\ parameter, relative to the simplest unification conditions. We focus on a phenomenologically interesting region that is favored by the Higgs mass and the relic density where the dark matter is a nearly pure higgsino with mass given by \mu~1 TeV while the scalars and gauginos have masses in the multi-TeV regime. There, we find that the fine tuning can be reduced to the level of a few percent. Despite the gluino mass in the ballpark of 2 TeV, resulting mass spectra will be hard to explore at the LHC, but good prospects for detection come from dark matter direct detection experiments. Finally, we demonstrate with a specific example how the conditions and mass relations giving low fine tuning can originate in the context of supergravity and Grand Unified Theories.
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References
How the literature uses it
25 arXiv papers cite this in 33 sentences
Papers citing it · 25 sentences without a confident label
Uses its method or tool 1 paper
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We employ GUT relations among the soft terms derived from the unification group structure [ref] .
Dark Matter, Sparticle Spectroscopy and Muon $(g-2)$ in $SU(4)_c \times SU(2)_L \times SU(2)_R$ · The $SU(4)_c ×SU(2)_L ×SU(2)_R$ model · 0.84
Cites it as support 1 paper
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Interestingly, in the multi-TeV region of superpartner masses there exists a higgsino-like DM solution with the right amount of relic density and with mass close to 1 TeV [ref] .
Dark matter production in the early Universe: beyond the thermal WIMP paradigm · WIMP miracle or non-miracle? · 0.96
Cites it as background 5 papers
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A supersymmetric scenario consisting of relatively light ( $≲$ 1 TeV higgsinos) has attracted some attention in recent years [ref] .
Light Higgsinos, Heavy Gluino and $b-\tau$ Quasi-Yukawa Unification: Will the LHC find the Gluino? · Introduction · 0.87
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It has long been claimed that electroweak naturalness requires that the superpartners of the SM fields exist with masses of order the weak scale [ref] $m(sparticles)∼m_weak∼m_Z$.
SUSY models under siege: LHC constraints and electroweak fine-tuning · Introduction · 0.89
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Naturalness arguments have been used since long ago [ref] to constrain from above supersymmetric masses[ For a partial list of references on naturalness in SUSY, see [ref] (before LHC ) and [ref] . ].
What is a Natural SUSY scenario? · The “standard" Natural SUSY · 0.95
What it cites · 67 sentences without a confident label
Uses the method or tool of 10 papers
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Mass spectra and fine tuning are calculated with [ref] ; the branching ratios and with [ref] ; the relic density and spin-independent neutralino-proton cross section with [ref] ; and EW precision constraints with [ref] .
SuperIso Relic: A program for calculating relic density and flavor physics observables in Supersymmetry · Fine tuning of the MSSM with GUT constraints · 1.00
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The results were obtained using the formulas of [ref] for the $β$ functions for a generic gauge group and the numerical package [ref] .
Calculating the renormalisation group equations of a SUSY model with Susyno · One-loop RGEs for $𝐒𝐔(5)×𝐔(1)$ · 1.00
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The numerical analysis was performed with the package BayesFITSv3.1, described in detail in [ref] .
Dark matter and collider signatures of the MSSM · Fine tuning of the MSSM with GUT constraints · 0.85
Uses data or values from 2 papers
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We use the values given in [ref] : $o=3.1 mDRU_ee$ ($1 mDRU_ee$ is $10^-3$ events/KeV$_ee$/kg/day), $b=2.6 mDRU_ee$, $δb=√(2·0.2^2+0.4^2)$ $mDRU_ee$, and the signal is simulated with in the nuclear recoil energy range of 3–25 keV$_nr$.
First results from the LUX dark matter experiment at the Sanford Underground Research Facility · Fine tuning of the MSSM with GUT constraints · 1.00
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A characteristic feature of “low $μ$" scenarios is, however, an under-abundance of neutralino dark matter with respect to the value measured by PLANCK [ref] .
Planck 2013 results. XVI. Cosmological parameters · Introduction · 0.96
Cites as support 1 paper
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It has been shown, see e.g., [ref] , that there are good prospects for future detection of an $≃1$ neutralino.
Dark matter and collider signatures of the MSSM · Spectra and phenomenology · 0.96
Cites as background 26 papers
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This is the known mechanism of “focusing", which has been widely studied in the literature, for scalars (focus-point (FP) SUSY [ref] ) and gauginos alike (non-universal gaugino mass models (NUGM) [ref] ).
Non-universal gaugino masses and fine tuning implications for SUSY searches in the MSSM and the GNMSSM · Introduction · 0.81
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This is the known mechanism of “focusing", which has been widely studied in the literature, for scalars (focus-point (FP) SUSY [ref] ) and gauginos alike (non-universal gaugino mass models (NUGM) [ref] ).
Focus Point Supersymmetry Redux · Introduction · 0.81
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This is the known mechanism of “focusing", which has been widely studied in the literature, for scalars (focus-point (FP) SUSY [ref] ) and gauginos alike (non-universal gaugino mass models (NUGM) [ref] ).
Naturalness and Focus Points with Non-Universal Gaugino Masses · Introduction · 0.81
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