Parity violation constraints using cosmic microwave background polarization spectra from 2006 and 2007 observations by the QUaD polarimeter

Wu, E. Y. S., Ade, Peter A. R. ORCID: https://orcid.org/0000-0002-5127-0401, Bock, J., Bowden, Melanie, Brown, M. L., Cahill, G., Castro, P. G., Church, S., Culverhouse, T., Friedman, R. B., Ganga, K., Gear, Walter Kieran ORCID: https://orcid.org/0000-0001-6789-6196, Gupta, Sujata, Hinderks, J., Kovac, J., Lange, A. E., Leitch, E., Melhuish, Simon John, Memari, Y., Murphy, J. A., Orlando, Angiola, Piccirillo, Lucio, Pryke, C., Rajguru, Nutan J., Rusholme, B., Schwarz, R., O'Sullivan, C., Taylor, A. N., Thompson, K. L., Turner, Abigail Helen and Zemcov, Michael ORCID: https://orcid.org/0000-0001-8253-1451 2009. Parity violation constraints using cosmic microwave background polarization spectra from 2006 and 2007 observations by the QUaD polarimeter. Physical Review Letters 102 (16) , 161302. 10.1103/PhysRevLett.102.161302

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Abstract

We constrain parity-violating interactions to the surface of last scattering using spectra from the QUaD experiment’s second and third seasons of observations by searching for a possible systematic rotation of the polarization directions of cosmic microwave background photons. We measure the rotation angle due to such a possible “cosmological birefringence” to be 0.55°±0.82° (random) ±0.5° (systematic) using QUaD’s 100 and 150 GHz temperature-curl and gradient-curl spectra over the spectra over the multipole range 200<ℓ<2000, consistent with null, and constrain Lorentz-violating interactions to <2×10-43  GeV (68% confidence limit). This is the best constraint to date on electrodynamic parity violation on cosmological scales.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	American Physical Society
ISSN:	0031-9007
Last Modified:	11 Oct 2023 19:01
URI:	https://orca.cardiff.ac.uk/id/eprint/7290

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