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MSSM dark matter measurements at the LHC without squarks and sleptons
High Energy Physics - Phenomenology · Submitted 9 Feb 2010
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Whilst it has been previously asserted that the LHC alone would fail to constrain the properties of the lightest neutralino for such a scenario, we find that one can obtain good predictions of astrophysical quantities such as the relic density, annihilation cross-section and direct search cross-sections by using the shape of the dilepton invariant mass spectrum to constrain neutralino mixing.
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The abstract, sentence by sentence
We examine the case of neutralino dark matter in the focus point region of the MSSM, in which the scalar sparticles are too heavy to be produced at the LHC. Whilst it has been previously asserted that the LHC alone would fail to constrain the properties of the lightest neutralino for such a scenario, we find that one can obtain good predictions of astrophysical quantities such as the relic density, annihilation cross-section and direct search cross-sections by using the shape of the dilepton invariant mass spectrum to constrain neutralino mixing. We demonstrate our technique using a Bayesian analysis of the 24 parameter MSSM model space, and in the process introduce a novel way of improving the LHC results even without assumptions on which new sparticles are responsible for the kinematic features in the dilepton invariant mass distribution.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We examine the case of neutralino dark matter in the focus point region of the MSSM, in which the scalar sparticles are too heavy to be produced at the LHC. | background 0.89 | 0.27 | 0.04 | asserted 0.96 |
| s1 | Whilst it has been previously asserted that the LHC alone would fail to constrain the properties of the lightest neutralino for such a scenario, we find that one can obtain good predictions of astrophysical quantities such as the relic density, annihilation cross-section and direct search cross-sections by using the shape of the dilepton invariant mass spectrum to constrain neutralino mixing. | result 0.56 | 0.94 | 0.86 | asserted 0.80 |
| s2 | We demonstrate our technique using a Bayesian analysis of the 24 parameter MSSM model space, and in the process introduce a novel way of improving the LHC results even without assumptions on which new sparticles are responsible for the kinematic features in the dilepton invariant mass distribution. | contribution 0.64 | 0.96 | 0.24 | asserted 1.00 |
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The paper
Original abstract
We examine the case of neutralino dark matter in the focus point region of the MSSM, in which the scalar sparticles are too heavy to be produced at the LHC. Whilst it has been previously asserted that the LHC alone would fail to constrain the properties of the lightest neutralino for such a scenario, we find that one can obtain good predictions of astrophysical quantities such as the relic density, annihilation cross-section and direct search cross-sections by using the shape of the dilepton invariant mass spectrum to constrain neutralino mixing. We demonstrate our technique using a Bayesian analysis of the 24 parameter MSSM model space, and in the process introduce a novel way of improving the LHC results even without assumptions on which new sparticles are responsible for the kinematic features in the dilepton invariant mass distribution.
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References
How the literature uses it
4 arXiv papers cite this in 4 sentences
Papers citing it · 2 sentences without a confident label
Cites it as background 2 papers
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In addition, several authors have investigated other related aspects of supersymmetric models with heavy scalars [ref] .
Effective Supersymmetry at the LHC · Introduction · 1.00
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As for the dark matter measurements in sfermion decoupling limit, see Refs. [ref] .
Aspects of Non-minimal Gauge Mediation · Small $μ$ Parameter Scenario · 0.91
What it cites · 12 sentences without a confident label
Uses the method or tool of 3 papers
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Section [ref] briefly reviews the relevant background, defines the benchmark point used in this study and introduces the MultiNest sampling algorithm [ref] used to obtain our results.
MultiNest: an efficient and robust Bayesian inference tool for cosmology and particle physics · Introduction · 0.99
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The neutralino decays give rise to kinematic endpoints in the dilepton invariant mass distribution that will be recognisable as arising from three body decays (by virtue of shape or possibly by using a wedgebox technique as in [ref] ).
Neutralino Reconstruction at the LHC from Decay-frame Kinematics · Conventional input measurements · 0.97
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The MultiNest algorithm [ref] tackles this problem through an ellipsoidal rejection sampling scheme.
Multimodal nested sampling: an efficient and robust alternative to MCMC methods for astronomical data analysis · Constraining the MSSM parameter space · 0.99
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