Measuring the α-particle charge radius with muonic helium-4 ions

Publication type:
Journal article
Metadata:
Autoren
  • Julian J Krauth
  • Karsten Schuhmann
  • Marwan Abdou Ahmed
  • Fernando D Amaro
  • Pedro Amaro
  • Francois Biraben
  • Tzu-Ling Chen
  • Daniel S Covita
  • Andreas J Dax
  • Marc Diepold
  • Luis MP Fernandes
  • Beatrice Franke
  • Sandrine Galtier
  • Andrea L Gouvea
  • Johannes Goetzfried
  • Thomas Graf
  • Theodor W Haensch
  • Jens Hartmann
  • Malte Hildebrandt
  • Paul Indelicato
  • Lucile Julien
  • Klaus Kirch
  • Andreas Knecht
  • Yi-Wei Liu
  • Jorge Machado
  • Cristina MB Monteiro
  • Francoise Mulhauser
  • Boris Naar
  • Tobias Nebel
  • Francois Nez
  • Joaquim MF dos Santos
  • Jose Paulo Santos
  • Csilla I Szabo
  • David Taqqu
  • Joao FCA Veloso
  • Jan Vogelsang
  • Andreas Voss
  • Birgit Weichelt
  • Randolf Pohl
  • Aldo Antognini
  • Franz Kottmann
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000612484600007&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1038/s41586-021-03183-1
eISSN
1476-4687
Externe Identifier
  • Clarivate Analytics Document Solution ID: PZ1FK
  • PubMed Identifier: 33505036
ISSN
0028-0836
Ausgabe der Veröffentlichung
7843
Zeitschrift
NATURE
Paginierung
527 - +
Datum der Veröffentlichung
2021
Status
Published
Titel
Measuring the α-particle charge radius with muonic helium-4 ions
Sub types
  • Article
Ausgabe der Zeitschrift
589

Data source: Web of Science (Lite)

Other metadata sources:
Abstract
<jats:title>Abstract</jats:title><jats:p>The energy levels of hydrogen-like atomic systems can be calculated with great precision. Starting from their quantum mechanical solution, they have been refined over the years to include the electron spin, the relativistic and quantum field effects, and tiny energy shifts related to the complex structure of the nucleus. These energy shifts caused by the nuclear structure are vastly magnified in hydrogen-like systems formed by a negative muon and a nucleus, so spectroscopy of these muonic ions can be used to investigate the nuclear structure with high precision. Here we present the measurement of two 2S–2P transitions in the muonic helium-4 ion that yields a precise determination of the root-mean-square charge radius of the α particle of 1.67824(83) femtometres. This determination from atomic spectroscopy is in excellent agreement with the value from electron scattering<jats:sup>1</jats:sup>, but a factor of 4.8 more precise, providing a benchmark for few-nucleon theories, lattice quantum chromodynamics and electron scattering. This agreement also constrains several beyond-standard-model theories proposed to explain the proton-radius puzzle<jats:sup>2–5</jats:sup>, in line with recent determinations of the proton charge radius<jats:sup>6–9</jats:sup>, and establishes spectroscopy of light muonic atoms and ions as a precise tool for studies of nuclear properties.</jats:p>
Autoren
  • Julian J Krauth
  • Karsten Schuhmann
  • Marwan Abdou Ahmed
  • Fernando D Amaro
  • Pedro Amaro
  • François Biraben
  • Tzu-Ling Chen
  • Daniel S Covita
  • Andreas J Dax
  • Marc Diepold
  • Luis MP Fernandes
  • Beatrice Franke
  • Sandrine Galtier
  • Andrea L Gouvea
  • Johannes Götzfried
  • Thomas Graf
  • Theodor W Hänsch
  • Jens Hartmann
  • Malte Hildebrandt
  • Paul Indelicato
  • Lucile Julien
  • Klaus Kirch
  • Andreas Knecht
  • Yi-Wei Liu
  • Jorge Machado
  • Cristina MB Monteiro
  • Françoise Mulhauser
  • Boris Naar
  • Tobias Nebel
  • François Nez
  • Joaquim MF dos Santos
  • José Paulo Santos
  • Csilla I Szabo
  • David Taqqu
  • João FCA Veloso
  • Jan Vogelsang
  • Andreas Voss
  • Birgit Weichelt
  • Randolf Pohl
  • Aldo Antognini
  • Franz Kottmann
DOI
10.1038/s41586-021-03183-1
eISSN
1476-4687
ISSN
0028-0836
Ausgabe der Veröffentlichung
7843
Zeitschrift
Nature
Sprache
en
Online publication date
2021
Paginierung
527 - 531
Datum der Veröffentlichung
2021
Status
Published
Herausgeber
Springer Science and Business Media LLC
Herausgeber URL
http://dx.doi.org/10.1038/s41586-021-03183-1
Datum der Datenerfassung
2023
Titel
Measuring the α-particle charge radius with muonic helium-4 ions
Ausgabe der Zeitschrift
589

Data source: Crossref

Abstract
The energy levels of hydrogen-like atomic systems can be calculated with great precision. Starting from their quantum mechanical solution, they have been refined over the years to include the electron spin, the relativistic and quantum field effects, and tiny energy shifts related to the complex structure of the nucleus. These energy shifts caused by the nuclear structure are vastly magnified in hydrogen-like systems formed by a negative muon and a nucleus, so spectroscopy of these muonic ions can be used to investigate the nuclear structure with high precision. Here we present the measurement of two 2S-2P transitions in the muonic helium-4 ion that yields a precise determination of the root-mean-square charge radius of the α particle of 1.67824(83) femtometres. This determination from atomic spectroscopy is in excellent agreement with the value from electron scattering<sup>1</sup>, but a factor of 4.8 more precise, providing a benchmark for few-nucleon theories, lattice quantum chromodynamics and electron scattering. This agreement also constrains several beyond-standard-model theories proposed to explain the proton-radius puzzle<sup>2-5</sup>, in line with recent determinations of the proton charge radius<sup>6-9</sup>, and establishes spectroscopy of light muonic atoms and ions as a precise tool for studies of nuclear properties.
Addresses
  • Max Planck Institute of Quantum Optics, Garching, Germany. j.krauth@vu.nl.
Autoren
  • Julian J Krauth
  • Karsten Schuhmann
  • Marwan Abdou Ahmed
  • Fernando D Amaro
  • Pedro Amaro
  • François Biraben
  • Tzu-Ling Chen
  • Daniel S Covita
  • Andreas J Dax
  • Marc Diepold
  • Luis MP Fernandes
  • Beatrice Franke
  • Sandrine Galtier
  • Andrea L Gouvea
  • Johannes Götzfried
  • Thomas Graf
  • Theodor W Hänsch
  • Jens Hartmann
  • Malte Hildebrandt
  • Paul Indelicato
  • Lucile Julien
  • Klaus Kirch
  • Andreas Knecht
  • Yi-Wei Liu
  • Jorge Machado
  • Cristina MB Monteiro
  • Françoise Mulhauser
  • Boris Naar
  • Tobias Nebel
  • François Nez
  • Joaquim MF Dos Santos
  • José Paulo Santos
  • Csilla I Szabo
  • David Taqqu
  • João FCA Veloso
  • Jan Vogelsang
  • Andreas Voss
  • Birgit Weichelt
  • Randolf Pohl
  • Aldo Antognini
  • Franz Kottmann
DOI
10.1038/s41586-021-03183-1
eISSN
1476-4687
Externe Identifier
  • PubMed Identifier: 33505036
  • PubMed Central ID: PMC7914124
Funding acknowledgements
  • Swiss National Science Foundation: 200020
  • Swiss National Science Foundation: 138175
  • Swiss National Science Foundation: 165854
  • Swiss National Science Foundation: 159755
  • Swiss National Science Foundation: 200021
  • European Research Council:
Open access
true
ISSN
0028-0836
Ausgabe der Veröffentlichung
7843
Zeitschrift
Nature
Sprache
eng
Medium
Print-Electronic
Online publication date
2021
Open access status
Open Access
Paginierung
527 - 531
Datum der Veröffentlichung
2021
Status
Published
Publisher licence
CC BY
Datum der Datenerfassung
2021
Titel
Measuring the α-particle charge radius with muonic helium-4 ions.
Sub types
  • Research Support, Non-U.S. Gov't
  • research-article
  • Journal Article
Ausgabe der Zeitschrift
589

Files

https://www.nature.com/articles/s41586-021-03183-1.pdf https://europepmc.org/articles/PMC7914124?pdf=render

Data source: Europe PubMed Central

Abstract
The energy levels of hydrogen-like atomic systems can be calculated with great precision. Starting from their quantum mechanical solution, they have been refined over the years to include the electron spin, the relativistic and quantum field effects, and tiny energy shifts related to the complex structure of the nucleus. These energy shifts caused by the nuclear structure are vastly magnified in hydrogen-like systems formed by a negative muon and a nucleus, so spectroscopy of these muonic ions can be used to investigate the nuclear structure with high precision. Here we present the measurement of two 2S-2P transitions in the muonic helium-4 ion that yields a precise determination of the root-mean-square charge radius of the α particle of 1.67824(83) femtometres. This determination from atomic spectroscopy is in excellent agreement with the value from electron scattering1, but a factor of 4.8 more precise, providing a benchmark for few-nucleon theories, lattice quantum chromodynamics and electron scattering. This agreement also constrains several beyond-standard-model theories proposed to explain the proton-radius puzzle2-5, in line with recent determinations of the proton charge radius6-9, and establishes spectroscopy of light muonic atoms and ions as a precise tool for studies of nuclear properties.
Date of acceptance
2020
Autoren
  • Julian J Krauth
  • Karsten Schuhmann
  • Marwan Abdou Ahmed
  • Fernando D Amaro
  • Pedro Amaro
  • François Biraben
  • Tzu-Ling Chen
  • Daniel S Covita
  • Andreas J Dax
  • Marc Diepold
  • Luis MP Fernandes
  • Beatrice Franke
  • Sandrine Galtier
  • Andrea L Gouvea
  • Johannes Götzfried
  • Thomas Graf
  • Theodor W Hänsch
  • Jens Hartmann
  • Malte Hildebrandt
  • Paul Indelicato
  • Lucile Julien
  • Klaus Kirch
  • Andreas Knecht
  • Yi-Wei Liu
  • Jorge Machado
  • Cristina MB Monteiro
  • Françoise Mulhauser
  • Boris Naar
  • Tobias Nebel
  • François Nez
  • Joaquim MF Dos Santos
  • José Paulo Santos
  • Csilla I Szabo
  • David Taqqu
  • João FCA Veloso
  • Jan Vogelsang
  • Andreas Voss
  • Birgit Weichelt
  • Randolf Pohl
  • Aldo Antognini
  • Franz Kottmann
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/33505036
DOI
10.1038/s41586-021-03183-1
eISSN
1476-4687
Externe Identifier
  • PubMed Central ID: PMC7914124
Funding acknowledgements
  • European Research Council:
Ausgabe der Veröffentlichung
7843
Zeitschrift
Nature
Sprache
eng
Country
England
Paginierung
527 - 531
PII
10.1038/s41586-021-03183-1
Datum der Veröffentlichung
2021
Status
Published
Datum, an dem der Datensatz öffentlich gemacht wurde
2021
Titel
Measuring the α-particle charge radius with muonic helium-4 ions.
Sub types
  • Journal Article
  • Research Support, Non-U.S. Gov't
Ausgabe der Zeitschrift
589

Data source: PubMed

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