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Improved indirect limits on charm and bottom quark EDMs

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2];  [2]
  1. Univ. of Minnesota, Minneapolis, MN (United States); University of Minnesota
  2. Univ. of Minnesota, Minneapolis, MN (United States)
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 × 10–20 e cm for the charm quark and |db| < 7.6 × 10–19 e cm for the bottom quark, with its uncertainty estimated as 10 %. The neutron EDM provides a stronger bound, |dc| < 6 × 10–22 e cm and |db| < 2 × 10–20 e cm, though with a larger hadronic uncertainty.
Research Organization:
Univ. of Minnesota, Minneapolis, MN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0011842
OSTI ID:
1905513
Journal Information:
Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 7 Vol. 2022; ISSN 1029-8479
Publisher:
Springer NatureCopyright Statement
Country of Publication:
United States
Language:
English

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