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Title: Gauge boson signals at the cosmological collider

Abstract

We study the production of massive gauge bosons during inflation from the axion-type coupling to the inflaton and the corresponding oscillatory features in the primordial non-Gaussianity. In a window in which both the gauge boson mass and the chemical potential are large, the signal is potentially reachable by near-future large scale structure probes. This scenario covers a new region in oscillation frequency which is not populated by previously known cosmological collider models. We also demonstrate how to properly include the exponential factor and discuss the subtleties in obtaining power dependence of the gauge boson mass in the signal estimate.

Authors:
 [1]; ORCiD logo [2]
  1. Univ. of Chicago, IL (United States)
  2. Harvard Univ., Cambridge, MA (United States)
Publication Date:
Research Org.:
Univ. of Chicago, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1735342
Grant/Contract Number:  
SC0009924
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2020; Journal Issue: 11; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Beyond Standard Model; Cosmology of Theories beyond the SM

Citation Formats

Wang, Lian-Tao, and Xianyu, Zhong-Zhi. Gauge boson signals at the cosmological collider. United States: N. p., 2020. Web. https://doi.org/10.1007/jhep11(2020)082.
Wang, Lian-Tao, & Xianyu, Zhong-Zhi. Gauge boson signals at the cosmological collider. United States. https://doi.org/10.1007/jhep11(2020)082
Wang, Lian-Tao, and Xianyu, Zhong-Zhi. Tue . "Gauge boson signals at the cosmological collider". United States. https://doi.org/10.1007/jhep11(2020)082. https://www.osti.gov/servlets/purl/1735342.
@article{osti_1735342,
title = {Gauge boson signals at the cosmological collider},
author = {Wang, Lian-Tao and Xianyu, Zhong-Zhi},
abstractNote = {We study the production of massive gauge bosons during inflation from the axion-type coupling to the inflaton and the corresponding oscillatory features in the primordial non-Gaussianity. In a window in which both the gauge boson mass and the chemical potential are large, the signal is potentially reachable by near-future large scale structure probes. This scenario covers a new region in oscillation frequency which is not populated by previously known cosmological collider models. We also demonstrate how to properly include the exponential factor and discuss the subtleties in obtaining power dependence of the gauge boson mass in the signal estimate.},
doi = {10.1007/jhep11(2020)082},
journal = {Journal of High Energy Physics (Online)},
number = 11,
volume = 2020,
place = {United States},
year = {2020},
month = {11}
}

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