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arXiv · 1803.03814

Detecting higher spin fields through statistical anisotropy in the CMB bispectrum

Gabriele Franciolini·Alex Kehagias·Antonio Riotto·Maresuke Shiraishi
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Abstract

Inflation may provide a suitable collider to probe physics at very high energies. In this paper we investigate the impact on the CMB bispectrum of higher spin fields which are long-lived on super-Hubble scales, e.g. partially massless higher spin fields. We show that distinctive statistical anisotropic signals on the CMB three-point correlator are induced and we investigate their detectability.

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Gabriele Franciolini, Alex Kehagias, Antonio Riotto, Maresuke Shiraishi. 2018-03-10. Detecting higher spin fields through statistical anisotropy in the CMB bispectrum. https://doi.org/10.1103/physrevd.98.043533

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