Probing Dark Sectors with Neutron Stars

Susan Gardner, Mohammadreza Zakeri

Research output: Contribution to journalReview articlepeer-review

1 Scopus citations


Tensions in the measurements of neutron and kaon weak decays, such as of the neutron lifetime, may speak to the existence of new particles and dynamics not present in the Standard Model (SM). In scenarios with dark sectors, particles that couple feebly to those of the SM appear. We offer a focused overview of such possibilities and describe how the observations of neutron stars, which probe either their structure or dynamics, limit them. In realizing these constraints, we highlight how the assessment of particle processes within dense baryonic matter impacts the emerging picture—and we emphasize both the flavor structure of the constraints and their broader connections to cogenesis models of dark matter and baryogenesis.

Original languageEnglish
Article number67
Issue number2
StatePublished - Feb 2024

Bibliographical note

Publisher Copyright:
© 2024 by the authors.


  • baryon number
  • dark matter
  • dark sectors
  • neutron lifetime anomaly
  • neutron stars

ASJC Scopus subject areas

  • General Physics and Astronomy


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