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Particle Physics with the Cosmic Microwave Background with SPT-3G

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arxiv 1911.08047 v1 pith:66Z7CXJL submitted 2019-11-19 astro-ph.CO

Particle Physics with the Cosmic Microwave Background with SPT-3G

J. S. Avva , P. A. R. Ade , Z. Ahmed , A. J. Anderson , K. Aylor , R. Basu Thakur , A. N. Bender , B. A. Benson
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L. E. Bleem S. Bocquet L. Bryant J. E. Carlstrom F. W. Carter T. W. Cecil C. L. Chang T. M. Crawford A. Cukierman T. de Haan J. Ding M. A. Dobbs S. Dodelson D. Dutcher W. Everett K. R. Ferguson A. Foster J. Gallicchio A. E. Gambrel R. W. Gardner J. C. Groh S. Guns N. W. Halverson A. H. Harke-Hosemann N. L. Harrington J. W. Henning G. P. Holder W. L. Holzapfel D. Howe N. Huang K. D. Irwin O. B. Jeong M. Jonas A. Jones T. S. Khaire L. Knox A. M. Kofman M. Korman D. L. Kubik S. Kuhlmann C.-L. Kuo A. T. Lee A. E. Lowitz S. S. Meyer D. Michalik J. Montgomery A. Nadolski T. Natoli H. Nguyen G. I. Noble V. Novosad S. Padin Z. Pan P. Paschos J. Pearson C. M. Posada W. Quan S. Raghunathan A. Rahlin C. L. Reichardt D. Riebel J. E. Ruhl J.T. Sayre E. Shirokoff G. Smecher J. A. Sobrin A. A. Stark J. Stephen K. T. Story A. Suzuki K. L. Thompson C. Tucker K. Vanderlinde J. D. Vieira G. Wang N. Whitehorn W. L. K. Wu V. Yefremenko K. W. Yoon M. R. Young
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classification astro-ph.CO
keywords spt-3gcameraneutrinoabundancebackgroundconstraintscosmiclight
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The cosmic microwave background (CMB) encodes information about the content and evolution of the universe. The presence of light, weakly interacting particles impacts the expansion history of the early universe, which alters the temperature and polarization anisotropies of the CMB. In this way, current measurements of the CMB place interesting constraints on the neutrino energy density and mass, as well as on the abundance of other possible light relativistic particle species. We present the status of an on-going 1500 sq. deg. survey with the SPT-3G receiver, a new mm-wavelength camera on the 10-m diameter South Pole Telescope (SPT). The SPT-3G camera consists of 16,000 superconducting transition edge sensors, a 10x increase over the previous generation camera, which allows it to map the CMB with an unprecedented combination of sensitivity and angular resolution. We highlight projected constraints on the abundance of sterile neutrinos and the sum of the neutrino masses for the SPT-3G survey, which could help determine the neutrino mass hierarchy.

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