Constraints on exotic spin-dependent interactions between matter and antimatter from antiprotonic helium spectroscopy

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

arxiv: 1801.00491 · v1 · pith:S7EHM3BZnew · submitted 2018-01-01 · ⚛️ physics.atom-ph

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 This is my paper

classification ⚛️ physics.atom-ph

keywords interactionsexoticspin-dependentantimatterantiprotonicheliummatterantiprotons

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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.

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