https://doi.org/10.1140/epjs/s11734-026-02374-z
Regular Article
Ionization energy loss of relativistic particles with electric dipole moments
1
Physics Department, University of Alberta, Edmonton, Canada
2
Physics Department, University of Regina, Regina, Saskatchewan, Canada
3
School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore, Singapore
a
This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
31
January
2026
Accepted:
4
May
2026
Published online:
14
May
2026
Abstract
We present a comprehensive calculation of the ionization energy loss for relativistic neutral particles carrying electric dipole moments (EDMs). We derive the stopping power formula explicitly for the aligned configuration and discuss how general dipole orientation modifies the result using known differential cross-section structure. Our results show that the energy loss scales differently from charged particles due to the 
dipole field behavior, yielding no logarithmic enhancement. For a 
heavy neutrino with an EDM of 
, we predict ionization signals of order 
, for 
, approximately 
that of a minimally ionizing charged particle.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2026
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
