Chen X, Wang Y, Xianyu ZZ. Standard Model Background of the Cosmological Collider.
PHYSICAL REVIEW LETTERS 2017;
118:261302. [PMID:
28707936 DOI:
10.1103/physrevlett.118.261302]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Indexed: 06/07/2023]
Abstract
The inflationary universe can be viewed as a "cosmological collider" with an energy of the Hubble scale, producing very massive particles and recording their characteristic signals in primordial non-Gaussianities. To utilize this collider to explore any new physics at very high scales, it is a prerequisite to understand the background signals from the particle physics standard model. In this Letter we describe the standard model background of the cosmological collider.
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