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Title: How well will ton-scale dark matter direct detection experiments constrain minimal supersymmetry?

Abstract

Weakly interacting massive particles (WIMPs) are amongst the most interesting dark matter (DM) candidates. Many DM candidates naturally arise in theories beyond the standard model (SM) of particle physics, like weak-scale supersymmetry (SUSY). Experiments aim to detect WIMPs by scattering, annihilation or direct production, and thereby determine the underlying theory to which they belong, along with its parameters. Here we examine the prospects for further constraining the Constrained Minimal Supersymmetric Standard Model (CMSSM) with future ton-scale direct detection experiments. We consider ton-scale extrapolations of three current experiments: CDMS, XENON and COUPP, with 1000 kg-years of raw exposure each. We assume energy resolutions, energy ranges and efficiencies similar to the current versions of the experiments, and include backgrounds at target levels. Our analysis is based on full likelihood constructions for the experiments. We also take into account present uncertainties on hadronic matrix elements for neutralino-quark couplings, and on halo model parameters. We generate synthetic data based on four benchmark points and scan over the CMSSM parameter space using nested sampling. We construct both Bayesian posterior PDFs and frequentist profile likelihoods for the model parameters, as well as the mass and various cross-sections of the lightest neutralino. Future ton-scale experiments will helpmore » substantially in constraining supersymmetry, especially when results of experiments primarily targeting spin-dependent nuclear scattering are combined with those directed more toward spin-independent interactions.« less

Authors:
; ; ; ;  [1]
  1. Oskar Klein Centre for Cosmoparticle Physics and Department of Physics, Stockholm University, AlbaNova University Centre, SE-10691 Stockholm (Sweden)
Publication Date:
OSTI Identifier:
22277680
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2011; Journal Issue: 04; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANNIHILATION; ASTROPHYSICS; COSMOLOGY; CROSS SECTIONS; ENERGY RESOLUTION; HADRONS; MATRIX ELEMENTS; NONLUMINOUS MATTER; QUARKS; SCATTERING; SPIN; STANDARD MODEL; SUPERSYMMETRY; VISIBLE RADIATION; WIMPS

Citation Formats

Akrami, Yashar, Savage, Christopher, Scott, Pat, Conrad, Jan, and Edsjö, Joakim. How well will ton-scale dark matter direct detection experiments constrain minimal supersymmetry?. United States: N. p., 2011. Web. doi:10.1088/1475-7516/2011/04/012.
Akrami, Yashar, Savage, Christopher, Scott, Pat, Conrad, Jan, & Edsjö, Joakim. How well will ton-scale dark matter direct detection experiments constrain minimal supersymmetry?. United States. https://doi.org/10.1088/1475-7516/2011/04/012
Akrami, Yashar, Savage, Christopher, Scott, Pat, Conrad, Jan, and Edsjö, Joakim. Fri . "How well will ton-scale dark matter direct detection experiments constrain minimal supersymmetry?". United States. https://doi.org/10.1088/1475-7516/2011/04/012.
@article{osti_22277680,
title = {How well will ton-scale dark matter direct detection experiments constrain minimal supersymmetry?},
author = {Akrami, Yashar and Savage, Christopher and Scott, Pat and Conrad, Jan and Edsjö, Joakim},
abstractNote = {Weakly interacting massive particles (WIMPs) are amongst the most interesting dark matter (DM) candidates. Many DM candidates naturally arise in theories beyond the standard model (SM) of particle physics, like weak-scale supersymmetry (SUSY). Experiments aim to detect WIMPs by scattering, annihilation or direct production, and thereby determine the underlying theory to which they belong, along with its parameters. Here we examine the prospects for further constraining the Constrained Minimal Supersymmetric Standard Model (CMSSM) with future ton-scale direct detection experiments. We consider ton-scale extrapolations of three current experiments: CDMS, XENON and COUPP, with 1000 kg-years of raw exposure each. We assume energy resolutions, energy ranges and efficiencies similar to the current versions of the experiments, and include backgrounds at target levels. Our analysis is based on full likelihood constructions for the experiments. We also take into account present uncertainties on hadronic matrix elements for neutralino-quark couplings, and on halo model parameters. We generate synthetic data based on four benchmark points and scan over the CMSSM parameter space using nested sampling. We construct both Bayesian posterior PDFs and frequentist profile likelihoods for the model parameters, as well as the mass and various cross-sections of the lightest neutralino. Future ton-scale experiments will help substantially in constraining supersymmetry, especially when results of experiments primarily targeting spin-dependent nuclear scattering are combined with those directed more toward spin-independent interactions.},
doi = {10.1088/1475-7516/2011/04/012},
url = {https://www.osti.gov/biblio/22277680}, journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 04,
volume = 2011,
place = {United States},
year = {2011},
month = {4}
}