• Open Access

Probing Leptogenesis with the Cosmological Collider

Yanou Cui and Zhong-Zhi Xianyu
Phys. Rev. Lett. 129, 111301 – Published 8 September 2022
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Abstract

Leptogenesis is generally challenging to directly test due to the very high energy scales involved. In this Letter, we propose a new probe for leptogenesis with cosmological collider physics. With the example of a cosmological Higgs collider, we demonstrate that during inflation leptogenesis models can produce detectable primordial non-Gaussianity with distinctive oscillatory patterns that encode information about the lepton-number violating couplings, the Majorana right-hand neutrino masses, and the CP phases, which are essential to leptogenesis.

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  • Received 25 January 2022
  • Accepted 15 August 2022

DOI:https://doi.org/10.1103/PhysRevLett.129.111301

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particles & FieldsGravitation, Cosmology & Astrophysics

Authors & Affiliations

Yanou Cui1,* and Zhong-Zhi Xianyu2,3,†

  • 1Department of Physics and Astronomy, University of California, Riverside, California 92521, USA
  • 2Department of Physics, Tsinghua University, Beijing 100084, China
  • 3Collaborative Innovation Center of Quantum Matter, Beijing 100084, China

  • *Corresponding author. yanou.cui@ucr.edu
  • Corresponding author. zxianyu@tsinghua.edu.cn

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Issue

Vol. 129, Iss. 11 — 9 September 2022

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