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

Ficek, Filip; Fadeev, Pavel; Flambaum, V. V.; Kimball, Derek F. Jackson; Kozlov, M. G.; Stadnik, Y. V.; Budker, Dmitry

doi:10.1103/physrevlett.120.183002

Cited by 43 publications

(30 citation statements)

References 57 publications

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“…Experimental observation of such bound systems, apart from being a test of atomic theory, would mark a creation of a fundamentally new class of atomic systems of particular interest for fundamental physics because they involve an antiparticle. For example, spectroscopy of atoms containing an antiparticle can be used in searches for exotic spin-dependent interactions among the atomic constituents [134].…”

Section: B Positron Capture By Atomsmentioning

confidence: 99%

High magnetic fields for fundamental physics

et al. 2018

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Various fundamental-physics experiments such as measurement of the birefringence of the vacuum, searches for ultralight dark matter (e.g., axions), and precision spectroscopy of complex systems (including exotic atoms containing antimatter constituents) are enabled by high-field magnets. We give an overview of current and future experiments and discuss the state-of-the-art DCand pulsed-magnet technologies and prospects for future developments. * Electronic address: budker@uni-mainz.de †

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Section: B Positron Capture By Atomsmentioning

confidence: 99%

High magnetic fields for fundamental physics

et al. 2018

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“…The diversity of exotic atoms permits us to search for exotic interactions strengths between various particles. The existing results include limits on interactions at the atomic scale between two electrons (from helium), electron and positon (from positronium), electron and antimuon (from muonium), or electron and antiproton (from antiprotonic helium). Details regarding searches for exotic interactions vary from system to system, so, as an example, in the remaining part of this section we focus on limits on exotic interactions between electrons coming from helium fine structure, as described by Ficek et al …”

Section: Methodsmentioning

confidence: 99%

Constraining Exotic Interactions

Ficek

Budker

2018

Annalen der Physik

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Beyond-the-standard-model interactions mediated by an exchange of virtual "new" bosons result in a finite set of possible effective interaction potentials between standard-model particles such as electrons and nucleons. The classification of such potentials is discussed and recent experiments searching for such exotic interactions at spatial scales from sub-nanometers to tens of thousand kilometers are briefly reviewed. standard model. We begin with a presentation of a nonrelativistic framework used to deal with fundamental interactions carried by spin-0 and spin-1 bosons at lowenergy scales and then we explore some of the systems used to give such constraints at various scales.

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“…For example, antiprotonic helium atoms are of particular interest, which allows for high precision studies of energy spectrum of this exotic system and inferring of various properties of an antiproton from comparison of theory and experiment [2,3]. Here it is worthy to mention a recent interest to the antiprotonic helium as a tool for constrains on various fifth forces [4,5] to set general limits on new interactions beyond the Standard Model.…”

Section: Introductionmentioning

confidence: 99%

Nonrelativistic energy levels of the helium atom

Aznabayev¹,

Bekbaev²,

Korobov³

2019

Proceedings of International Conference on Precision Physics and Fundamental Physical Constants — PoS(FFK2019)

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The nonrelativistic ionization energy levels of a helium atom are calculated for S, P , D and F states. The calculations are based on the variational method of "exponential" expansion. The convergence of the calculated energy levels is studied as a function of the number of basis functions N . This allows us to claim that the obtained energy values (including the values for the states with a nonzero angular momentum) are accurate up to 28-35 significant digits. Calculations of the nonrelativistic ionization energy of the negative hydrogen ion H − are also presented.

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

Cited by 43 publications

References 57 publications

High magnetic fields for fundamental physics

High magnetic fields for fundamental physics

Constraining Exotic Interactions

Nonrelativistic energy levels of the helium atom

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