The Proton Structure in and out of Muonic Hydrogen
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Date
2022-09
Publication Type
Review Article
ETH Bibliography
yes
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Abstract
Laser spectroscopy of muonic atoms has been recently used to probe properties of light nuclei with unprecedented precision. We introduce nuclear effects in hydrogen-like atoms, nucleon structure quantities (form factors, structure functions, polarizabilities), and their effects in the Lamb shift and hyperfine splitting (HFS) of muonic hydrogen (mu H). Updated theory predictions for the Lamb shift and HFS in mu H are presented. We review the challenges of the ongoing effort to measure the ground-state HFS in mu H and its impact on our understanding of the nucleon spin structure. To narrow down this search, we present a novel theory prediction obtained by scaling the measured HFS in hydrogen while leveraging radiative corrections. We also summarize recent developments in the spectroscopy of simple atomic and molecular systems and emphasize how they allow for precise determinations of fundamental constants, bound-state QED tests, and New Physics searches.
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Publication status
published
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Journal / series
Volume
72
Pages / Article No.
389 - 418
Publisher
Annual Reviews
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Edition / version
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Software
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Date collected
Date created
Subject
muonic atoms; Lamb shift; hyperfine splitting; charge radius; Zemach radius; two-photon exchange
Organisational unit
03864 - Kirch, Klaus / Kirch, Klaus
Notes
Funding
197052 - Hyperfine splitting in muonic hydrogen: Lasers and the protons magnetic structure (SNF)
725039 - Hyperfine splittings in muonic atoms and laser technology (EC)
725039 - Hyperfine splittings in muonic atoms and laser technology (EC)