Neutrino Physics from the Cosmic Microwave Background and Large Scale Structure
Abstract
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 sigma(sum m_nu) = 16 meV and sigma(N_eff) = 0.020. Such a mass measurement will produce a high significance detection of non-zero sum m_nu, 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 N_eff 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 N_eff = 3.046.
Cite
@article{arxiv.1309.5383,
title = {Neutrino Physics from the Cosmic Microwave Background and Large Scale Structure},
author = {K. N. Abazajian and K. Arnold and J. Austermann and B. A. Benson and C. Bischoff and J. Bock and J. R. Bond and J. Borrill and E. Calabrese and J. E. Carlstrom and C. S. Carvalho and C. L. Chang and H. C. Chiang and S. Church and A. Cooray and T. M. Crawford and K. S. Dawson and S. Das and M. J. Devlin and M. Dobbs and S. Dodelson and O. Dore and J. Dunkley and J. Errard and A. Fraisse and J. Gallicchio and N. W. Halverson and S. Hanany and S. R. Hildebrandt and A. Hincks and R. Hlozek and G. Holder and W. L. Holzapfel and K. Honscheid and W. Hu and J. Hubmayr and K. Irwin and W. C. Jones and M. Kamionkowski and B. Keating and R. Keisler and L. Knox and E. Komatsu and J. Kovac and C. -L. Kuo and C. Lawrence and A. T. Lee and E. Leitch and E. Linder and P. Lubin and J. McMahon and A. Miller and L. Newburgh and M. D. Niemack and H. Nguyen and H. T. Nguyen and L. Page and C. Pryke and C. L. Reichardt and J. E. Ruhl and N. Sehgal and U. Seljak and J. Sievers and E. Silverstein and A. Slosar and K. M. Smith and D. Spergel and S. T. Staggs and A. Stark and R. Stompor and A. G. Vieregg and G. Wang and S. Watson and E. J. Wollack and W. L. K. Wu and K. W. Yoon and O. Zahn},
journal= {arXiv preprint arXiv:1309.5383},
year = {2015}
}
Comments
Report from the "Dark Energy and CMB" working group for the American Physical Society's Division of Particles and Fields long-term planning exercise ("Snowmass"); v3: references, discussion added; matching version accepted for publication in Astropart. Phys