New Limits on Bosonic Dark Matter, Solar Axions, Pauli Exclusion Principle Violation, and Electron Decay from the Majorana Demonstrator

N. Abgrall et al. (Majorana Collaboration)
Phys. Rev. Lett. 118, 161801 – Published 21 April 2017

Abstract

We present new limits on exotic keV-scale physics based on 478 kg d of Majorana Demonstrator commissioning data. Constraints at the 90% confidence level are derived on bosonic dark matter (DM) and solar axion couplings, Pauli exclusion principle violating (PEPV) decay, and electron decay using monoenergetic peak signal limits above our background. Our most stringent DM constraints are set for 11.8 keV mass particles, limiting gAe<4.5×1013 for pseudoscalars and (α/α)<9.7×1028 for vectors. We also report a 14.4 keV solar axion coupling limit of gANeff×gAe<3.8×1017, a 12β2<8.5×1048 limit on the strength of PEPV electron transitions, and a lower limit on the electron lifetime of τe>1.2×1024yr for e invisible.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 2 December 2016

DOI:https://doi.org/10.1103/PhysRevLett.118.161801

© 2017 American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

Click to Expand

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 118, Iss. 16 — 21 April 2017

Reuse & Permissions
Access Options
CHORUS

Article Available via CHORUS

Download Accepted Manuscript
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×