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Title: A guide to designing future ground-based cosmic microwave background experiments

In this follow-up work to the high energy physics Community Summer Study 2013 (aka SNOWMASS), we explore the scientific capabilities of a future Stage IV cosmic microwave background polarization experiment under various assumptions on detector count, resolution, and sky coverage. We use the Fisher matrix technique to calculate the expected uncertainties of cosmological parameters in νΛCDM that are especially relevant to the physics of fundamental interactions, including neutrino masses, effective number of relativistic species, dark energy equation of state, dark matter annihilation, and inflationary parameters. To further chart the landscape of future cosmology probes, we include forecasted results from the baryon acoustic oscillation signal as measured by Dark Energy Spectroscopic Instrument to constrain parameters that would benefit from low redshift information. We find the following best 1σ constraints: σ(M {sub ν}) = 15 meV, σ(N {sub eff}) = 0.0156, dark energy figure of merit = 303, σ(p {sub ann}) = 0.00588 × 3 × 10{sup –26} cm{sup 3} s{sup –1} GeV{sup –1}, σ(Ω {sub K}) = 0.00074, σ(n{sub s} ) = 0.00110, σ(α {sub s}) = 0.00145, and σ(r) = 0.00009. We also detail the dependencies of the parameter constraints on detector count, resolution, and sky coverage.
Authors:
;  [1] ;  [2] ;  [3] ;  [4] ; ;  [5] ;  [6]
  1. Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305 (United States)
  2. Computational Cosmology Center-Lawrence Berkeley National Lab, 1 Cyclotron Road, Berkeley, CA 94720 (United States)
  3. Institute for Advanced Study, School of Natural Sciences, Einstein Drive, Princeton, NJ 08540 (United States)
  4. Department of Physics, University of California, Berkeley, CA 94720 (United States)
  5. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States)
  6. Brookhaven National Laboratory, Upton, NY 11973 (United States)
Publication Date:
OSTI Identifier:
22356590
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 788; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANNIHILATION; BACKGROUND RADIATION; BARYONS; COSMOLOGY; EQUATIONS OF STATE; GEV RANGE; HIGH ENERGY PHYSICS; MASS; NEUTRINOS; NONLUMINOUS MATTER; OSCILLATIONS; RED SHIFT; RELATIVISTIC RANGE; RELICT RADIATION; RESOLUTION