Probing the two-neutrino exchange force using atomic parity violation

Mitrajyoti Ghosh, Yuval Grossman, Walter Tangarife

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


The exchange of two neutrinos at one loop leads to a long-range parity-violating force between fermions. We explore the two-neutrino force in the backdrop of atomic physics. We point out that this is the largest parity-violating long-range force in the Standard Model and calculate the effect of this force in experiments that probe atomic parity violation by measuring optical rotation of light as it passes through a sample of vaporized atoms. We perform explicit calculations for the hydrogen atom to demonstrate this effect. Although we find that the effect is too small to be observed in hydrogen in the foreseeable future, our approach may be applied to other setups where long-range parity violation is large enough to be probed experimentally.

Original languageEnglish
Article number116006
JournalPhysical Review D
Issue number11
StatePublished - 1 Jun 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2020 authors. Published by the American Physical Society. 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 SCOAP


Dive into the research topics of 'Probing the two-neutrino exchange force using atomic parity violation'. Together they form a unique fingerprint.

Cite this