Publications list

Salman, M. & Karr, J.-P. Photodetachment energy of negative hydrogen ions. Preprint at https://doi.org/10.48550/ARXIV.2601.04341 (2026).

Kullie, O., Nogueira, H. D. & Karr, J.-P. Precision calculation of the bound-electron g factor in molecular hydrogen ions. Phys. Rev. A 112, 052813 (2025).

Liszkay, L. et al. News from the GBAR experiment: Improved positron accumulation in a buffer gas trap with a silicon carbide remoderator. J. Phys.: Conf. Ser. 3149, 012002 (2025).

Korobov, V. I., Karr, J.-P. & Zhong, Z.-X. Second-order corrections of orders mα⁶ and mα⁶ ( m/M ) to the spin-averaged energy in the HD⁺ and H₂⁺ ions. Molecular Physics e2563023 (2025) http://doi.org/10.1080/00268976.2025.2563023.

Karr, J.-Ph., Schiller, S., Korobov, V. I. & Alighanbari, S. Determination of a set of fundamental constants from molecular hydrogen ion spectroscopy: A modeling study. Phys. Rev. A 112, 022809 (2025).

Haidar, M., Nogueira, H. D. & Karr, J.-Ph. Quantum Computing Approach to Atomic and Molecular Three-Body Systems. Preprint at https://doi.org/10.48550/ARXIV.2510.18005 (2025).

Schiller, S. & Karr, J.-Ph. Prospects for the determination of fundamental constants with beyond-state-of-the-art uncertainty using molecular hydrogen ion spectroscopy. Phys. Rev. A 109, 042825 (2024).

Adrich, P. et al. Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud. Eur. Phys. J. C 83, 1004 (2023).

Karr, J.-Ph. & Koelemeij, J. C. J. Extraction of spin-averaged rovibrational transition frequencies in HD⁺ for the determination of fundamental constants. Molecular Physics 121, e2216081 (2023).

Nogueira, H. D. & Karr, J.-P. High-precision solution of the Dirac equation for the hydrogen molecular ion using a basis-set expansion. Phys. Rev. A 107, 042817 (2023).

Delaunay, C. et al. Self-Consistent Extraction of Spectroscopic Bounds on Light New Physics. Phys. Rev. Lett. 130, 121801 (2023).

Guidoni, L., Houssin, M. & Karr, J.-P. Spectroscopie haute résolution : l’apport des ions piégés refroidis par laser. Photoniques 47–51 (2023) http://doi.org/10.1051/photon/202312147.

Mbardi, A., Leuliet, M., Argence, B., Karr, J.-P. & Hilico, L. Mid-IR frequency laser control with a comb for H ₂ ⁺ spectroscopy. EPJ Web Conf. 287, 07017 (2023).

Hilico, L. & Knoop, M. Chapter 6 Trapping and Cooling Ions. in Ultra-cold atoms, ions, molecules and quantum technologies 113–128 (EDP Sciences, 2022). http://doi.org/10.1051/978-2-7598-2746-6.c009.

Haidar, M., Korobov, V. I., Hilico, L. & Karr, J.-P. Higher-order corrections to the spin-orbit and spin-spin tensor interactions in HD⁺. Phys. Rev. A 106, 042815 (2022).

Haidar, M., Korobov, V. I., Hilico, L. & Karr, J.-P. Higher-order corrections to spin-orbit and spin-spin tensor interactions in hydrogen molecular ions: Theory and application to H₂⁺. Phys. Rev. A 106, 022816 (2022).

Nogueira, H. D., Korobov, V. I. & Karr, J.-P. High-precision solution of the Dirac equation for the hydrogen molecular ion by an iterative method. Phys. Rev. A 105, L060801 (2022).

Korobov, V. I. & Karr, J.-P. Spin–orbit interaction in the HD⁺ ion. Eur. Phys. J. D 76, 197 (2022).

Blumer, P. et al. Positron accumulation in the GBAR experiment. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1040, 167263 (2022).

Karr, J.-P. Leading-order relativistic corrections to the g factor of H 2 +. Phys. Rev. A 104, 032822 (2021).

Korobov, V. I. & Karr, J.-Ph. Rovibrational spin-averaged transitions in the hydrogen molecular ions. Phys. Rev. A 104, 032806 (2021).

Germann, M. et al. Three-body QED test and fifth-force constraint from vibrations and rotations of HD +. Phys. Rev. Research 3, L022028 (2021).

Husson, A. et al. A pulsed high-voltage decelerator system to deliver low-energy antiprotons. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1002, 165245 (2021).

Charlton, M. et al. Positron production using a 9 MeV electron linac for the GBAR experiment. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 985, 164657 (2021).

Karr, J.-P., Haidar, M., Hilico, L., Zhong, Z.-X. & Korobov, V. I. Higher-order corrections to spin-spin scalar interactions in HD⁺ and H₂⁺. Phys. Rev. A 102, 052827 (2020).

Karr, J.-P., Marchand, D. & Voutier, E. The proton size. Nat Rev Phys 2, 601–614 (2020).

Patra, S. et al. Proton-electron mass ratio from laser spectroscopy of HD⁺ at the part-per-trillion level. Science 369, 1238–1241 (2020).

Schmidt, J. et al. Trapping, Cooling, and Photodissociation Analysis of State-Selected H₂⁺ Ions Produced by (3+1) Multiphoton Ionization. Phys. Rev. Applied 14, 024053 (2020).

Korobov, V. I., Karr, J.-P., Haidar, M. & Zhong, Z.-X. Hyperfine structure in the H₂⁺ and HD⁺ molecular ions at order mα⁶. Phys. Rev. A 102, 022804 (2020).

Haidar, M., Zhong, Z.-X., Korobov, V. I. & Karr, J.-Ph. Nonrelativistic QED approach to the fine- and hyperfine-structure corrections of order mα⁶ and mα⁶(m/M): Application to the hydrogen atom. Phys. Rev. A 101, 022501 (2020).

Sacquin, Y. & Hilico, L. Pourquoi et comment peser l’antimatière ? Reflets phys. 12–18 (2020) http://doi.org/10.1051/refdp/202065012.

Kim, B. H. et al. Development of a PbWO₄ Detector for Single-Shot Positron Annihilation Lifetime Spectroscopy at the GBAR Experiment. Acta Phys. Pol. A 137, 122–125 (2020).

Niang, S. et al. Accumulation of Positrons from a LINAC Based Source. Acta Phys. Pol. A 137, 164–166 (2020).

Karr, J.-P., Haidar, M., Hilico, L. & Korobov, V. I. Precision Calculations for Three-Body Molecular Bound States. in Recent Progress in Few-Body Physics (eds Orr, N. A., Ploszajczak, M., Marqués, F. M. & Carbonell, J.) vol. 238 75–81 (Springer International Publishing, Cham, 2020).

Karr, J.-P. & Marchand, D. Progress on the proton-radius puzzle. Nature 575, 61–62 (2019).

Karr, J.-P. Stark quenching of rovibrational states of H₂⁺ due to motion in a magnetic field. Phys. Rev. A 98, 062501 (2018).

Patra, S. et al. Proton–electron mass ratio from HD⁺ revisited. J. Phys. B: At. Mol. Opt. Phys. 51, 024003 (2018).

Sillitoe, N. et al. Hbar⁺ Sympathetic Cooling Simulations with a Variable Time Step. in Proceedings of the 12th International Conference on Low Energy Antiproton Physics (LEAP2016) (Journal of the Physical Society of Japan, Kanazawa, Japan, 2017). http://doi.org/10.7566/JPSCP.18.011014.

Korobov, V. I., Hilico, L. & Karr, J.-Ph. Fundamental Transitions and Ionization Energies of the Hydrogen Molecular Ions with Few ppt Uncertainty. Phys. Rev. Lett. 118, 233001 (2017).

Fleurbaey, H., Biraben, F., Julien, L., Karr, J.-P. & Nez, F. Cross-damping effects in 1 S − 3 S spectroscopy of hydrogen and deuterium. Phys. Rev. A 95, 052503 (2017).

Karr, J.-Ph., Hilico, L. & Korobov, V. I. One-loop vacuum polarization at mα⁷ and higher orders for three-body molecular systems. Phys. Rev. A 95, 042514 (2017).

Karr, J.-P. Hyperfine puzzle? Nature Phys 13, 533–534 (2017).

Biesheuvel, J. et al. High-precision spectroscopy of the HD⁺ molecule at the 1-p.p.b. level. Appl. Phys. B 123, 23 (2017).

Karr, J.-Ph., Hilico, L., Koelemeij, J. C. J. & Korobov, V. I. Hydrogen molecular ions for improved determination of fundamental constants. Phys. Rev. A 94, 050501 (2016).

Korobov, V. I., Koelemeij, J. C. J., Hilico, L. & Karr, J.-Ph. Theoretical Hyperfine Structure of the Molecular Hydrogen Ion at the 1 ppm Level. Phys. Rev. Lett. 116, 053003 (2016).

Biesheuvel, J. et al. Probing QED and fundamental constants through laser spectroscopy of vibrational transitions in HD⁺. Nat Commun 7, 10385 (2016).

Banerjee, D. et al. Towards a test of the weak equivalence principle of gravity using anti-hydrogen at CERN. in 2016 Conference on Precision Electromagnetic Measurements (CPEM 2016) 1–2 (IEEE, Ottawa, ON, Canada, 2016). http://doi.org/10.1109/CPEM.2016.7540781.

Karr, J.-P. et al. Hydrogen molecular ions: new schemes for metrology and fundamental physics tests. J. Phys.: Conf. Ser. 723, 012048 (2016).

Sillitoe, N. & Hilico, L. NUMERICAL SIMULATIONS OF ION CLOUD DYNAMICS. in Advanced Textbooks in Physics vol. 0 161–177 (WORLD SCIENTIFIC (EUROPE), 2016).

Hilico, L. NON-LASER COOLING TECHNIQUES. in Advanced Textbooks in Physics vol. 0 147–159 (WORLD SCIENTIFIC (EUROPE), 2016).