Constraints on Exotic Spin-Dependent Interactions Between Matter and Antimatter from Antiprotonic Helium Spectroscopy

Filip Ficek; Pavel Fadeev; Victor V Flambaum; Derek F Jackson Kimball; Mikhail G Kozlov; Yevgeny V Stadnik; Dmitry Budker

doi:10.1103/PhysRevLett.120.183002

Constraints on Exotic Spin-Dependent Interactions Between Matter and Antimatter from Antiprotonic Helium Spectroscopy

Phys Rev Lett. 2018 May 4;120(18):183002. doi: 10.1103/PhysRevLett.120.183002.

Authors

Filip Ficek¹, Pavel Fadeev^{2

3}, Victor V Flambaum^{2

4}, Derek F Jackson Kimball⁵, Mikhail G Kozlov^{6

7}, Yevgeny V Stadnik², Dmitry Budker^{2

8

9}

Affiliations

¹ Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland.
² Helmholtz Institute Mainz, Johannes Gutenberg University, 55099 Mainz, Germany.
³ Ludwig-Maximilians-Universität, München, Fakultät für Physik, Arnold Sommerfeld Center for Theoretical Physics, 80333 München, Germany.
⁴ School of Physics, University of New South Wales, Sydney, New South Wales 2052, Australia.
⁵ Department of Physics, California State University-East Bay, Hayward, California 94542-3084, USA.
⁶ Petersburg Nuclear Physics Institute of NRC "Kurchatov Institute", Gatchina 188300, Russia.
⁷ St. Petersburg Electrotechnical University LETI, Prof. Popov Str. 5, 197376 St. Petersburg, Russia.
⁸ Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA.
⁹ Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.

PMID: 29775329
DOI: 10.1103/PhysRevLett.120.183002

Abstract

Heretofore undiscovered spin-0 or spin-1 bosons can mediate exotic spin-dependent interactions between standard model particles. Here, we carry out the first search for semileptonic spin-dependent interactions between matter and antimatter. We compare theoretical calculations and spectroscopic measurements of the hyperfine structure of antiprotonic helium to constrain exotic spin- and velocity-dependent interactions between electrons and antiprotons.