The observation of vibrating pear shapes in radon nuclei: update
Abstract
There is a large body of evidence that atomic nuclei can undergo octupole distortion and assume the shape of a pear. This phenomenon is important for measurements of electric-dipole moments of atoms, which would indicate CP violation and hence probe physics beyond the standard model of particle physics. Isotopes of both radon and radium have been identified as candidates for such measurements. Here, we have observed the low-lying quantum states in Rn and Rn by accelerating beams of these radioactive nuclei. We report here additional states not assigned in our 2019 publication. We show that radon isotopes undergo octupole vibrations but do not possess static pear-shapes in their ground states. We conclude that radon atoms provide less favourable conditions for the enhancement of a measurable atomic electric-dipole moment.
Cite
@article{arxiv.2003.10147,
title = {The observation of vibrating pear shapes in radon nuclei: update},
author = {P. A. Butler and L. P. Gaffney and P. Spagnoletti and J. Konki and M. Scheck and J. F. Smith and K. Abrahams and M. Bowry and J. Cederkäll and T. Chupp and G. De Angelis and H. De Witte and P. E. Garrett and A. Goldkuhle and C. Henrich and A. Illana and K. Johnston and D. T. Joss and J. M. Keatings and N. A. Kelly and M. Komorowska and T. Kröll and M. Lozano and B. S. Nara Singh and D. O'Donnell and J. Ojala and R. D. Page and L. G. Pedersen and C. Raison and P. Reiter and J. A. Rodriguez and D. Rosiak and S. Rothe and M. Seidlitz and T. M. Shneidman and B. Siebeck and J. Sinclair and M. Stryjczyk and P. Van Duppen and S. Vinals and V. Virtanen and N. Warr and K. Wrzosek-Lipska and M. Zielińska},
journal= {arXiv preprint arXiv:2003.10147},
year = {2020}
}
Comments
Updated from Nat. Comm. 10 (2019) 2473