Precision Detection of the Cosmic Neutrino Background

Robert E. Lopez, Scott Dodelson, Andrew Heckler, and Michael S. Turner
Phys. Rev. Lett. 82, 3952 – Published 17 May 1999
PDFExport Citation

Abstract

In the standard big bang cosmology the canonical value for the ratio of relic neutrinos to cosmic microwave background (CMB) photons is 9/11. Within the framework of the standard model of particle physics there are small corrections, in sum about 1%, due to slight heating of neutrinos by electron-positron annihilations and finite-temperature QED effects. We show that this leads to changes in the predicted CMB anisotropies that will bias determination of the other cosmological parameters if not correctly taken into account. These changes might be detected by future satellite experiments.

  • Received 13 March 1998

DOI:https://doi.org/10.1103/PhysRevLett.82.3952

©1999 American Physical Society

Authors & Affiliations

Robert E. Lopez1, Scott Dodelson2, Andrew Heckler3, and Michael S. Turner1,2,4

  • 1Department of Physics, The University of Chicago, Chicago, Illinois 60637-1433
  • 2NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510-0500
  • 3Department of Physics, The Ohio State University, Columbus, Ohio 43210
  • 4Department of Astronomy & Astrophysics, Enrico Fermi Institute, The University of Chicago, Chicago, Illinois 60637-1433

References (Subscription Required)

Click to Expand
Issue

Vol. 82, Iss. 20 — 17 May 1999

Reuse & Permissions
Access Options
Collection
Heating up of Superconductors
January 27, 2017

This collection marks the 30th anniversary of the discovery of high-temperature superconductors. The papers selected highlight some of the advances that have been made to date, both in understanding why these compounds behave in the way they do, and in utilizing them in applications. The papers included in the collection have been made free to read.

APS and CERN Sign Open Access Agreement for SCOAP3

APS and CERN, the host organization of SCOAP3 (Sponsoring Consortium for Open Access Publishing in Particle Physics), have signed an agreement to make the high-energy physics (HEP) articles published in three leading APS journals open access beginning January 1, 2018. This agreement acts to support the publishing of open access content for wider benefit of the HEP community.

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×