Neutrino Physics from the Cosmic Microwave Background and Large-Scale Structure

By K. Abazajian, K. Arnold, J. Austermann, B. Benson, C. Bischoff, J. Bock, J. Richard Bond, J. Borrill, E. Calabrese, J. Carlstrom and 66 more. 2013

316 citations recorded by the source corpus.

This is a report on the status and prospects of the quantification of neutrino properties through the cosmological neutrino background for the Cosmic Frontier of the Division of Particles and Fields Community Summer Study long-term planning exercise. Experiments planned and underway are prepared to study the cosmological neutrino background in detail via its influence on distance-redshift relations and the growth of structure. The program for the next decade described in this document, including upcoming spectroscopic galaxy surveys eBOSS and DESI and a new Stage-IV CMB polarization experiment CMB-S4, will achieve σ(σmν) = 16 meV and σ(Neff) = 0.020. Such a mass measurement will produce a high significance detection of non-zero σmν, whose lower bound derived from atmospheric and solar neutrino oscillation data is about 58 meV. If neutrinos have a minimal normal mass hierarchy, this measurement will definitively rule out the inverted neutrino mass hierarchy, shedding light on one of the most puzzling aspects of the Standard Model of particle physics — the origin of mass. This precise a measurement of Neff will allow for high sensitivity to any light and dark degrees of freedom produced in the big bang and a precision test of the standard cosmological model prediction that Neff=3.046.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/f3d8b59b89a6402179f7f55661102c60740fda96

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

In Nuclear and High Energy Physics

Citations in the corpus

COSMOLOGICAL CONSTRAINTS FROM GALAXY CLUSTERS IN THE 2500 SQUARE-DEGREE SPT-SZ SURVEY (2016, background): “Constraints on this model from the CMB power spectrum show a strong degeneracy between σ8 and Σmν (e.g., Komatsu et al. 2009; Planck Collaboration et al. 2014a; Abazajian et al. 2015).”
Sterile neutrinos in cosmology (2017, methodology): “I would like to thank my fruitful collaborations and discussions with Prateek Agrawal, Mike BoylanKolchin, Esra Bulbul, James Bullock, Mu-Chun Chen, J. J. Cherry, Francis-Yan Cyr-Racine, André de Gouvêa, Bhupal Dev, Pasquale Di Bari, Scott Dodelson, Marco Drewes, Enectali Figueroa-Feliciano, Georg”
THE SDSS-IV EXTENDED BARYON OSCILLATION SPECTROSCOPIC SURVEY: OVERVIEW AND EARLY DATA (2015, background): “The relative impact of eBOSS, CMB and other cosmology programs to improve neutrino constraints is reviewed in Abazajian et al. (2015b).”
CMB-S4 Science Case, Reference Design, and Project Plan (2019, methodology): “Furthermore, the robust measurement of the neutrino abundance from the CMB is crucial for inferring cosmic parameters, including the expansion history using BAOs [193], the neutrino masses [2], and H0 [164].”
Phases of new physics in the CMB (2015, methodology): “Forecasts for a CMB Stage IV (CMB-S4) experiment [9] suggest an increase in sensitivity by one or two orders of magnitude within the next decade.”
Accurate halo-model matter power spectra with dark energy, massive neutrinos and modified gravitational forces (2016, background): “Reviews of neutrinos in cosmology are given by Lesgourgues & Pastor (2006) and Abazajian et al. (2015).”
The Simons Observatory: science goals and forecasts (2018, background): “…impact on the expansion rate, primordial element abundances, and radiation perturbations, Neff affects the damping and the position of the acoustic peaks in the temperature, Emode of polarization, and TE power spectra (see, e.g., Bashinsky and Seljak 2004; Hou et al. 2013; Abazajian et al. 2015).”
Robust forecasts on fundamental physics from the foreground-obscured, gravitationally-lensed CMB polarization (2015, methodology): “Such measurements will begin to discriminate between the normal and inverted neutrino-mass hierarchies, and could confirm or spectacularly contradict our understanding of the thermal physics and neutrino makeup of the early universe [85].”
The Quest for B Modes from Inflationary Gravitational Waves (2015, background): “More details about possible future experimental endeavors can be found in Abazajian et al. (2015a) and Baumann et al. (2009).”
Cosmological Moduli and the Post-Inflationary Universe: A Critical Review (2015, background): “If these particles contribute substantially to the energy density they will affect the expansion rate changing predictions for both the abundances of primordial elements [165] and the physics of the CMB [166].”