Improved indirect limits on charm and bottom quark EDMs

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


We derive indirect limits on the charm and bottom quark electric dipole moments (EDMs) from paramagnetic AMO and neutron EDM experiments. The charm and bottom quark EDMs generate CP-odd photon-gluon operators and light quark EDMs at the c- and b-quark mass thresholds. These CP-odd operators induce the CP-odd semi-leptonic operator CS and the neutron EDM below the QCD scale that are probed by the paramagnetic and neutron EDM experiments, respectively. The bound from CS is |dc| < 1.3 × 10−20e cm for the charm quark and |db| < 7.6 × 10−19e cm for the bottom quark, with its uncertainty estimated as 10 %. The neutron EDM provides a stronger bound, |dc| < 6 × 10−22e cm and |db| < 2 × 10−20e cm, though with a larger hadronic uncertainty.

Original languageEnglish (US)
Article number106
JournalJournal of High Energy Physics
Issue number7
StatePublished - Jul 2022

Bibliographical note

Publisher Copyright:
© 2022, The Author(s).


  • CP Violation
  • Electric Dipole Moments


Dive into the research topics of 'Improved indirect limits on charm and bottom quark EDMs'. Together they form a unique fingerprint.

Cite this