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

Detalhes bibliográficos
Autor(a) principal: Krauth, Julian J.
Data de Publicação: 2021
Outros Autores: Schuhmann, Karsten, Ahmed, Marwan Abdou, Amaro, Fernando D., Amaro, Pedro, Biraben, François, Chen, Tzu-Ling, Covita, Daniel S., Dax, Andreas J., Diepold, Marc, Fernandes, Luis M. P., Franke, Beatrice, Galtier, Sandrine, Gouvea, Andrea L., Götzfried, Johannes, Graf, Thomas, Hänsch, Theodor W., Hartmann, Jens, Hildebrandt, Malte, Indelicato, Paul, Julien, Lucile, Kirch, Klaus, Knecht, Andreas, Liu, Yi-Wei, Machado, Jorge, Monteiro, Cristina M. B., Mulhauser, Françoise, Naar, Boris, Nebel, Tobias, Nez, François, Santos, Joaquim M. F. dos, Santos, José Paulo, Szabo, Csilla I., Taqqu, David, Veloso, João F. C. A., Vogelsang, Jan, Voss, Andreas, Weichelt, Birgit, Pohl, Randolf, Antognini, Aldo, Kottmann, Franz
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/92778
https://doi.org/10.1038/s41586-021-03183-1
Resumo: 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 puzzle2,3,4,5, in line with recent determinations of the proton charge radius6,7,8,9, and establishes spectroscopy of light muonic atoms and ions as a precise tool for studies of nuclear properties.
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spelling Measuring the α-particle charge radius with muonic helium-4 ionsThe 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 puzzle2,3,4,5, in line with recent determinations of the proton charge radius6,7,8,9, and establishes spectroscopy of light muonic atoms and ions as a precise tool for studies of nuclear properties.Nature2021info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/92778http://hdl.handle.net/10316/92778https://doi.org/10.1038/s41586-021-03183-1eng0028-08361476-4687https://doi.org/10.1038/s41586-021-03183-1Krauth, Julian J.Schuhmann, KarstenAhmed, Marwan AbdouAmaro, Fernando D.Amaro, PedroBiraben, FrançoisChen, Tzu-LingCovita, Daniel S.Dax, Andreas J.Diepold, MarcFernandes, Luis M. P.Franke, BeatriceGaltier, SandrineGouvea, Andrea L.Götzfried, JohannesGraf, ThomasHänsch, Theodor W.Hartmann, JensHildebrandt, MalteIndelicato, PaulJulien, LucileKirch, KlausKnecht, AndreasLiu, Yi-WeiMachado, JorgeMonteiro, Cristina M. B.Mulhauser, FrançoiseNaar, BorisNebel, TobiasNez, FrançoisSantos, Joaquim M. F. dosSantos, José PauloSzabo, Csilla I.Taqqu, DavidVeloso, João F. C. A.Vogelsang, JanVoss, AndreasWeichelt, BirgitPohl, RandolfAntognini, AldoKottmann, Franzinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-05-25T06:30:28Zoai:estudogeral.uc.pt:10316/92778Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:11:50.201322Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Measuring the α-particle charge radius with muonic helium-4 ions
title Measuring the α-particle charge radius with muonic helium-4 ions
spellingShingle Measuring the α-particle charge radius with muonic helium-4 ions
Krauth, Julian J.
title_short Measuring the α-particle charge radius with muonic helium-4 ions
title_full Measuring the α-particle charge radius with muonic helium-4 ions
title_fullStr Measuring the α-particle charge radius with muonic helium-4 ions
title_full_unstemmed Measuring the α-particle charge radius with muonic helium-4 ions
title_sort Measuring the α-particle charge radius with muonic helium-4 ions
author Krauth, Julian J.
author_facet Krauth, Julian J.
Schuhmann, Karsten
Ahmed, Marwan Abdou
Amaro, Fernando D.
Amaro, Pedro
Biraben, François
Chen, Tzu-Ling
Covita, Daniel S.
Dax, Andreas J.
Diepold, Marc
Fernandes, Luis M. P.
Franke, Beatrice
Galtier, Sandrine
Gouvea, Andrea L.
Götzfried, Johannes
Graf, Thomas
Hänsch, Theodor W.
Hartmann, Jens
Hildebrandt, Malte
Indelicato, Paul
Julien, Lucile
Kirch, Klaus
Knecht, Andreas
Liu, Yi-Wei
Machado, Jorge
Monteiro, Cristina M. B.
Mulhauser, Françoise
Naar, Boris
Nebel, Tobias
Nez, François
Santos, Joaquim M. F. dos
Santos, José Paulo
Szabo, Csilla I.
Taqqu, David
Veloso, João F. C. A.
Vogelsang, Jan
Voss, Andreas
Weichelt, Birgit
Pohl, Randolf
Antognini, Aldo
Kottmann, Franz
author_role author
author2 Schuhmann, Karsten
Ahmed, Marwan Abdou
Amaro, Fernando D.
Amaro, Pedro
Biraben, François
Chen, Tzu-Ling
Covita, Daniel S.
Dax, Andreas J.
Diepold, Marc
Fernandes, Luis M. P.
Franke, Beatrice
Galtier, Sandrine
Gouvea, Andrea L.
Götzfried, Johannes
Graf, Thomas
Hänsch, Theodor W.
Hartmann, Jens
Hildebrandt, Malte
Indelicato, Paul
Julien, Lucile
Kirch, Klaus
Knecht, Andreas
Liu, Yi-Wei
Machado, Jorge
Monteiro, Cristina M. B.
Mulhauser, Françoise
Naar, Boris
Nebel, Tobias
Nez, François
Santos, Joaquim M. F. dos
Santos, José Paulo
Szabo, Csilla I.
Taqqu, David
Veloso, João F. C. A.
Vogelsang, Jan
Voss, Andreas
Weichelt, Birgit
Pohl, Randolf
Antognini, Aldo
Kottmann, Franz
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
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author
author
dc.contributor.author.fl_str_mv Krauth, Julian J.
Schuhmann, Karsten
Ahmed, Marwan Abdou
Amaro, Fernando D.
Amaro, Pedro
Biraben, François
Chen, Tzu-Ling
Covita, Daniel S.
Dax, Andreas J.
Diepold, Marc
Fernandes, Luis M. P.
Franke, Beatrice
Galtier, Sandrine
Gouvea, Andrea L.
Götzfried, Johannes
Graf, Thomas
Hänsch, Theodor W.
Hartmann, Jens
Hildebrandt, Malte
Indelicato, Paul
Julien, Lucile
Kirch, Klaus
Knecht, Andreas
Liu, Yi-Wei
Machado, Jorge
Monteiro, Cristina M. B.
Mulhauser, Françoise
Naar, Boris
Nebel, Tobias
Nez, François
Santos, Joaquim M. F. dos
Santos, José Paulo
Szabo, Csilla I.
Taqqu, David
Veloso, João F. C. A.
Vogelsang, Jan
Voss, Andreas
Weichelt, Birgit
Pohl, Randolf
Antognini, Aldo
Kottmann, Franz
description 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 puzzle2,3,4,5, in line with recent determinations of the proton charge radius6,7,8,9, and establishes spectroscopy of light muonic atoms and ions as a precise tool for studies of nuclear properties.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/92778
http://hdl.handle.net/10316/92778
https://doi.org/10.1038/s41586-021-03183-1
url http://hdl.handle.net/10316/92778
https://doi.org/10.1038/s41586-021-03183-1
dc.language.iso.fl_str_mv eng
language eng
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1476-4687
https://doi.org/10.1038/s41586-021-03183-1
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dc.publisher.none.fl_str_mv Nature
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