NL-eEDM

A table-top particle physics program to probe the electron's electric dipole moment with cold molecules

Publications


2D transverse laser cooling of a hexapole focused beam of cold BaF molecules


Joost W.F. van Hofslot, Izabella E. Thompson, Anno Touwen, Nithesh Balasubramanian, Roman Bause, Hendrick L. Bethlem, Anastasia Borschevsky, Ties H. Fikkers, Steven Hoekstra, Steven A. Jones, Jelmer E.J. Levenga, Maarten C. Mooij, Heleen Mulder, Bastiaan A. Nijman, Efion H. Prinsen, Bart J. Schellenberg, Lucas van Sloten, Rob G.E. Timmermans, Wim Ubachs, Jordy de Vries, Lorenz Willmann

ArXiv:2506.19069, June, 2025


A method to determine the phase-space distribution of a pulsed molecular beam


Maarten C Mooij, Hendrick L Bethlem, Alexander Boeschoten, Anastasia Borschevsky, Ties H Fikkers, Steven Hoekstra, Joost W F van Hofslot, Klaus Jungmann, Virginia R Marshall, Thomas B Meijknecht, Rob G E Timmermans, Anno Touwen, Wim Ubachs, Lorenz Willmann, (NL-eEDM collaboration)

J. Phys. B: At. Mol. Opt. Phys., vol. 58, 2025, p. 015303


Community input to the European Strategy on particle physics: Searches for Permanent Electric Dipole Moments


M. Athanasakis-Kaklamanakis, M. Au, R. Berger, S. Degenkolb, J. De Vries, S. Hoekstra, A. Keshavarzi, N. Neri, D. Ries, P. Schmidt-Wellenburg, M. Tarbutt

ArXiv, 2025, pp. 2505.22281


Prospects for measuring the electron's electric dipole moment with polyatomic molecules in an optical lattice


Roman Bause, Nithesh Balasubramanian, Ties Fikkers, Eifion H. Prinsen, Kees Steinebach, Arian Jadbabaie, Nicholas R. Hutzler, I. Agustín Aucar, Lukáš F. Pašteka, Anastasia Borschevsky, Steven Hoekstra

Physical Review A, vol. 111, 2025, p. 062815


Manipulating a beam of barium fluoride molecules using an electrostatic hexapole


Anno Touwen, Joost W.F. van Hofslot, Thijs Qualm, Richard Borchers, Roman Bause, Hendrick L. Bethlem, Alexander Boeschoten, Anastasia Borschevsky, Ties H. Fikkers, teven Hoekstra, Klaus Jungmann, Virginia R. Marshall, Thomas B. Meijknecht, Maarten C. Mooij, Rob G.E. Timmermans, Wim Ubachs, Lorenz Willmann

New Journal of Physics, 2024, p. 073054


Spin-precession method for sensitive electric dipole moment searches


A. Boeschoten, V. R. Marshall, T. B. Meijknecht, A. Touwen, H. L. Bethlem, A. Borschevsky, S. Hoekstra, J. W. F. van Hofslot, K. Jungmann, M. C. Mooij, R. G. E. Timmermans, W. Ubachs, L. Willmann

Phys.Rev.A, vol. 110, arXiv:2303.06402, 2024, pp. L010801


Influence of source parameters on the longitudinal phase-space distribution of a pulsed cryogenic beam of barium fluoride molecules


M C Mooij, H L Bethlem, A Boeschoten, A Borschevsky, K Esajas, T H Fikkers, S Hoekstra, J W F van Hofslot, K Jungmann, V R Marshall, T B Meijknecht, R G E Timmermans, A Touwen, W Ubachs, L Willmann, Y Yin.

New Journal of Physics, vol. 26, 2024, p. 053009


Benchmarking of the Fock-space coupled-cluster method and uncertainty estimation: Magnetic hyperfine interaction in the excited state of BaF


The NL-eEDM collaboration:, Malika Denis, Pi A B Haase, Maarten C Mooij, Yuly Chamorro, Parul Aggarwal, Hendrick L Bethlem, Alexander Boeschoten, Anastasia Borschevsky, Kevin Esajas, Yongliang Hao, Steven Hoekstra, Joost W F van Hofslot, Virginia R Marshall, Thomas B Meijknecht, Rob G E Timmermans, Anno Touwen, Wim Ubachs, Lorenz Willmann, Yanning Yin

Physical Review A, vol. 105, 2022, p. 052811


A supersonic laser ablation beam source with narrow velocity spreads


P. Aggarwal, H. L. Bethlem, A. Boeschoten, A. Borschevsky, K. Esajas, Y. Hao, S. Hoekstra, K. Jungmann, V. R. Marshall, T. B. Meijknecht, M. C. Mooij, R. G. E. Timmermans, A. Touwen, W. Ubachs, L. Willmann, Y. Yin, A. Zapara

Review of Scientific Instruments, vol. 92, 2021, p. 033202


Deceleration and Trapping of SrF Molecules


P. Aggarwal, Y. Yin, K. Esajas, H. L. Bethlem, A. Boeschoten, A. Borschevsky, S. Hoekstra, K. Jungmann, V. R. Marshall, T. B. Meijknecht, M. C. Mooij, R. G. E. Timmermans, A. Touwen, W. Ubachs, L. Willmann

Physical Review Letters, vol. 127, 2021, p. 173201


Lifetime measurements of the A 2Π1/2 and A 2Π3/2 states in BaF


P Aggarwal, V R Marshall, H L Bethlem, A Boeschoten, A Borschevsky, M Denis, K Esajas, Y Hao, S Hoekstra, K Jungmann, T B Meijknecht, M C Mooij, R G E Timmermans, A Touwen, W Ubachs, S M Vermeulen, L Willmann, Y Yin, A Zapara, NL-eEDM Collaboration

Physical Review A, vol. 100, 2019, p. 052503


High accuracy theoretical investigations of CaF, SrF, and BaF and implications for laser-cooling.


Yongliang Hao, Lukáš F. Pašteka, Lucas Visscher, and the NL-eEDM collaboration: Parul Aggarwal, Hendrick L. Bethlem, Alexander Boeschoten, Anastasia Borschevsky, Malika Denis, Kevin Esajas, Steven Hoekstra, Klaus Jungmann, Virginia R. Marshall, Thomas B. Meijknecht, Maarten C. Mooij, Rob G. E. Timmermans, Anno Touwen, Wim Ubachs, Lorenz Willmann, Yanning Yin, Artem Zapara

Journal of Chemical Physics, vol. 151(3), 2019


Measuring the electric dipole moment of the electron in BaF


The NL-eEDM collaboration:, Parul Aggarwal, Hendrick L Bethlem, Anastasia Borschevsky, Malika Denis, Kevin Esajas, Pi A B Haase, Yongliang Hao, Steven Hoekstra, Klaus Jungmann, Thomas B Meijknecht, Maarten C Mooij, Rob G E Timmermans, Wim Ubachs, Lorenz Willmann, Artem Zapara

The European Physical Journal D, vol. 72, 2018, p. 197