arXiv : Global fits of GUT-scale SUSY models with GAMBIT

Athron, Peter; Edsjö, Joakim; Savage, Christopher; Dal, Lars A.; Farmer, Ben; Rogan, Christopher; Kvellestad, Anders; Ruiz de Austri, Roberto; Putze, Antje; Chrząszcz, Marcin; Balázs, Csaba; Serra, Nicola; Cornell, Jonathan M.; Saavedra, Aldo; Krislock, Abram; White, Martin; Jackson, Paul; Weniger, Christoph; Buckley, Andy; Bringmann, Torsten; Martinez, Gregory D.; Scott, Pat; Mahmoudi, Farvah; Conrad, Jan; Raklev, Are

doi:10.1140/epjc/s10052-017-5167-0

Published Articles
Report number	arXiv:1705.07935 ; COEPP-MN-17-9 ; CERN-TH-2017-168 ; NORDITA 2017-080 ; CoEPP-MN-17-9 ; gambit-physics ; gambit-physics-2017
Title	Global fits of GUT-scale SUSY models with GAMBIT
Author(s)	Athron, Peter (Monash U.) ; Balázs, Csaba (Monash U.) ; Bringmann, Torsten (Oslo U.) ; Buckley, Andy (Glasgow U.) ; Chrząszcz, Marcin (Cracow, INP ; Zurich U.) ; Conrad, Jan (Stockholm U. ; Stockholm U., OKC) ; Cornell, Jonathan M. (McGill U.) ; Dal, Lars A. (Oslo U.) ; Edsjö, Joakim (Stockholm U. ; Stockholm U., OKC) ; Farmer, Ben (Stockholm U. ; Stockholm U., OKC) ; Jackson, Paul (Adelaide U.) ; Krislock, Abram (Oslo U.) ; Kvellestad, Anders (Nordita) ; Mahmoudi, Farvah (IUF, Paris ; CERN ; Lyon Observ.) ; Martinez, Gregory D. (UCLA) ; Putze, Antje (Annecy, LAPTH) ; Raklev, Are (Oslo U.) ; Rogan, Christopher (Harvard U., Phys. Dept.) ; Ruiz de Austri, Roberto (Valencia U., IFIC) ; Saavedra, Aldo (ARC, CoEPP, Australia ; Sydney U.) ; Savage, Christopher (Nordita) ; Scott, Pat (Imperial Coll., London) ; Serra, Nicola (Zurich U.) ; Weniger, Christoph (U. Amsterdam, GRAPPA) ; White, Martin (Adelaide U.)
Publication	2017-12-04
Imprint	2017-05-22
Number of pages	50
Note	50 pages, 21 figures, 7 tables, v2 accepted for publication in EPJC, v3 update Zenodo link
In:	Eur. Phys. J. C 77 (2017) 824
DOI	10.1140/epjc/s10052-017-5167-0 (publication)
Subject category	astro-ph.CO ; Astrophysics and Astronomy ; hep-ph ; Particle Physics - Phenomenology
Accelerator/Facility, Experiment	GAMBIT
Abstract	We present the most comprehensive global fits to date of three supersymmetric models motivated by grand unification: the Constrained Minimal Supersymmetric Standard Model (CMSSM), and its Non-Universal Higgs Mass generalisations NUHM1 and NUHM2. We include likelihoods from a number of direct and indirect dark matter searches, a large collection of electroweak precision and flavour observables, direct searches for supersymmetry at LEP and Runs I and II of the LHC, and constraints from Higgs observables. Our analysis improves on existing results not only in terms of the number of included observables, but also in the level of detail with which we treat them, our sampling techniques for scanning the parameter space, and our treatment of nuisance parameters. We show that stau co-annihilation is now ruled out in the CMSSM at more than 95\% confidence. Stop co-annihilation turns out to be one of the most promising mechanisms for achieving an appropriate relic density of dark matter in all three models, whilst avoiding all other constraints. We find high-likelihood regions of parameter space featuring light stops and charginos, making them potentially detectable in the near future at the LHC. We also show that tonne-scale direct detection will play a largely complementary role, probing large parts of the remaining viable parameter space, including essentially all models with multi-TeV neutralinos.
Copyright/License	preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © The Author(s) 2017 (License: CC-BY-4.0), sponsored by SCOAP³

$Profile likelihoods and confidence regions for the CMSSM, in terms of the mass and thermal relic abundance ($\Omega_\chi h^2$) of the lightest neutralino. \textit{Left:} The profile likelihood ratio, plotted with $1 \sigma$ and $2 \sigma$ contour lines drawn in white, and the best fit point indicated by a star. \textit{Right:} Mechanisms for ensuring that the relic density of DM does not exceed the measured value, through either chargino co-annihilation, resonant annihilation via the $A/H$-funnel, or stop co-annihilation. Other potential mechanisms (e.g.\ stau co-annihilation) are not shown, as they do not lie within $2 \sigma$ of the best-fit point of the entire sample. $2 \sigma$ contours for each mechanism are plotted using darker lines, and best-fit points are indicated by a correspondingly coloured star.$ $Profile likelihoods and confidence regions for the CMSSM, in terms of the mass and thermal relic abundance ($\Omega_\chi h^2$) of the lightest neutralino. \textit{Left:} The profile likelihood ratio, plotted with $1 \sigma$ and $2 \sigma$ contour lines drawn in white, and the best fit point indicated by a star. \textit{Right:} Mechanisms for ensuring that the relic density of DM does not exceed the measured value, through either chargino co-annihilation, resonant annihilation via the $A/H$-funnel, or stop co-annihilation. Other potential mechanisms (e.g.\ stau co-annihilation) are not shown, as they do not lie within $2 \sigma$ of the best-fit point of the entire sample. $2 \sigma$ contours for each mechanism are plotted using darker lines, and best-fit points are indicated by a correspondingly coloured star.$ $Profile likelihoods and confidence regions for the CMSSM, in terms of the mass and thermal relic abundance ($\Omega_\chi h^2$) of the lightest neutralino. \textit{Left:} The profile likelihood ratio, plotted with $1 \sigma$ and $2 \sigma$ contour lines drawn in white, and the best fit point indicated by a star. \textit{Right:} Mechanisms for ensuring that the relic density of DM does not exceed the measured value, through either chargino co-annihilation, resonant annihilation via the $A/H$-funnel, or stop co-annihilation. Other potential mechanisms (e.g.\ stau co-annihilation) are not shown, as they do not lie within $2 \sigma$ of the best-fit point of the entire sample. $2 \sigma$ contours for each mechanism are plotted using darker lines, and best-fit points are indicated by a correspondingly coloured star.$ Show more plots

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Record created 2017-05-27, last modified 2024-06-13

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