Profile likelihood maps of a 15-dimensional MSSM

Strege, Charlotte; Bertone, Gianfranco; Besjes, G. J.; Caron, S.; Austri, Roberto Ruiz de; Strübig, A.; Trotta, Roberto

doi:10.1007/jhep09(2014)081

Cited by 55 publications

(64 citation statements)

References 128 publications

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“…Several groups have advocated the use of the pMSSM for interpretation of LHC results [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52]. Most of these studies use estimated experimental efficiencies and acceptances for pMSSM points, and compare them to the model-independent limits from a selection of LHC searches to constrain the pMSSM parameter space.…”

Section: Jhep10(2015)134mentioning

confidence: 99%

Summary of the ATLAS experiment’s sensitivity to supersymmetry after LHC Run 1 — interpreted in the phenomenological MSSM

Aad

Bergeås

Brenner

et al. 2015

J. High Energ. Phys.

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100

169

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A summary of the constraints from the ATLAS experiment on R-parityconserving supersymmetry is presented. Results from 22 separate ATLAS searches are considered, each based on analysis of up to 20.3 fb −1 of proton-proton collision data at centre-of-mass energies of √ s = 7 and 8 TeV at the Large Hadron Collider. The results are interpreted in the context of the 19-parameter phenomenological minimal supersymmetric standard model, in which the lightest supersymmetric particle is a neutralino, taking into account constraints from previous precision electroweak and flavour measurements as well as from dark matter related measurements. The results are presented in terms of constraints on supersymmetric particle masses and are compared to limits from simplified models. The impact of ATLAS searches on parameters such as the dark matter relic density, the couplings of the observed Higgs boson, and the degree of electroweak fine-tuning is also shown. Spectra for surviving supersymmetry model points with low fine-tunings are presented. The ATLAS collaboration 58 Keywords: Hadron-Hadron Scattering IntroductionDuring the first run of the Large Hadron Collider (LHC), the ATLAS [1] and CMS [2] Collaborations performed a wide range of searches for supersymmetry (SUSY) [3][4][5][6][7][8][9][10][11], using proton-proton (pp) collision data at centre-of-mass energies ( √ s) of 7 and 8 TeV. SUSY, a theoretically favoured framework for extending the Standard Model (SM), is able to address some of its unanswered questions, particularly the hierarchy problem [12][13][14][15], which is related to the fine-tuning needed to obtain the correct mass for the observed Higgs boson. SUSY can also provide credible dark matter candidates [16,17] and can improve the unification of the electroweak and strong interactions [18][19][20][21][22][23][24][25][26].The minimal supersymmetric extension of the Standard Model (MSSM) [27][28][29][30][31] predicts partners for each of the SM states. It predicts a pair of scalar partners -one for each fermion chirality -for each of the SM quarks and leptons. These spin-zero partner particles are known as squarks (q) and sleptons (˜ ) respectively. In the first two generations the pair of chiral partners is largely unmixed, so the mass states can be labelledẽ L andẽ R , where the L and R subscripts denote the scalar partners of the left-and right-handed Standard Model fermion states respectively. In the third generation of quarks and leptons the mixing between the scalars is larger, and the mixed states are labelled by their mass indices e.g.t 1 and t 2 , wheret 1 is lighter by construction. Each state in the SM gluon colour octet has a spinhalf partner known as a gluinog. There are a total of eight spin-half partners of the electroweak gauge and Higgs bosons: the neutral bino (superpartner of the U(1) gauge field); the winos, which are a charged pair and a neutral particle (superpartners of the W bosons of the SU(2) L gauge fields); and the Higgsinos, which are two neutral particles and a charged pai...

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Section: Jhep10(2015)134mentioning

confidence: 99%

Summary of the ATLAS experiment’s sensitivity to supersymmetry after LHC Run 1 — interpreted in the phenomenological MSSM

Aad

Bergeås

Brenner

et al. 2015

J. High Energ. Phys.

Self Cite

100

169

View full text Add to dashboard Cite

show abstract

“…For the SM parameters, we used Gaussian priors described in Table III. For the numerical analysis, we use the SuperBayeS code [59], which uses the nested sampling algorithm implemented in Multinest [60], and integrates SoftSusy [61], SusyBSG [62], SuperIso [63], DarkSusy [64], MicrOMEGAs [65], and DarkSE [20] for the computation of the experimental observable. The full likelihood function is the product of the individual Gaussian likelihoods associated to each piece of experimental data.…”

Section: Sparticle Massesmentioning

confidence: 99%

Indirect and direct detection prospect for TeV dark matter in the nine parameter MSSM

et al. 2015

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“…In this case, the main constraints for sparticle masses come from LHC limits and B-physics (see, e.g., Refs. [30][31][32][33]). …”

Section: The Minimal Supersymmetric Standard Model After the Firsmentioning

confidence: 99%

Dark matter protohalos in a nine parameter MSSM and implications for direct and indirect detection

2015

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Dark matter protohalos in a nine parameter MSSM and implications for direct and indirect detection Diamanti, R.; Cabrera Catalan, M.E.; Ando, S. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Download date: 24 Mar 2019Dark matter protohalos in a nine parameter MSSM and implications for direct and indirect detection We study how the kinetic decoupling of dark matter within a minimal supersymmetric extension of the standard model, by adopting nine independent parameters (MSSM-9), could improve our knowledge of the properties of the dark matter protohalos. We show that the most probable neutralino mass regions, which satisfy the relic density and the Higgs mass constraints, are those with the lightest supersymmetric neutralino mass around 1 TeV and 3 TeV, corresponding to Higgsino-like and winolike neutralino, respectively. The kinetic decoupling temperature in the MSSM-9 scenario leads to a most probable protohalo mass in a range of M ph ∼ 10 −12 -10 −7 M ⊙ . The part of the region closer to ∼2 TeV gives also important contributions from the neutralino-stau coannihilation, reducing the effective annihilation rate in the early Universe. We also study how the size of the smallest dark matter substructures correlates to experimental signatures, such as the spin-dependent and spin-independent scattering cross sections, relevant for direct detection of dark matter. Improvements on the spin-independent sensitivity might reduce the most probable range of the protohalo mass between ∼10 −9 M ⊙ and ∼10 −7 M ⊙ , while the expected spindependent sensitivity provides weaker constraints. We show how the boost of the luminosity due to dark matter annihilation increases, depending on the protohalo mass. In the Higgsino case, the protohalo mass is lower than the canonical value often used in the literature (∼10 −6 M ⊙ ), while hσvi does not deviate from hσvi ∼ 10 −26 cm 3 s −1 ; there is no significant enhancement of the luminosity. On the contrary, in the wino case, the protohalo mass is even lighter, and hσvi is two orders of magnitude larger; as its consequence, we see a substantial enhancement of the luminosity.

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Profile likelihood maps of a 15-dimensional MSSM

Cited by 55 publications

References 128 publications

Summary of the ATLAS experiment’s sensitivity to supersymmetry after LHC Run 1 — interpreted in the phenomenological MSSM

Summary of the ATLAS experiment’s sensitivity to supersymmetry after LHC Run 1 — interpreted in the phenomenological MSSM

Indirect and direct detection prospect for TeV dark matter in the nine parameter MSSM

Dark matter protohalos in a nine parameter MSSM and implications for direct and indirect detection

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