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Trapped antihydrogen: A new frontier in fundamental physics

N Madsen, Niels Madsen Orcid Logo

Journal of Physics: Conference Series, Volume: 443, Start page: 012005

Swansea University Author: Niels Madsen Orcid Logo

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DOI (Published version): 10.1088/1742-6596/443/1/012005

Abstract

Antihydrogen, the bound state of an antiproton and a positron, has been produced at low energies at CERN since 2002. Antihydrogen is of interest for use in precision tests of nature's fundamental symmetries. The charge conjugation/parity/time reversal (CPT) theorem, a crucial part of the founda...

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Published in: Journal of Physics: Conference Series
ISSN: 1742-6596
Published: 2013
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URI: https://cronfa.swan.ac.uk/Record/cronfa15086
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first_indexed 2013-07-23T12:13:48Z
last_indexed 2018-02-09T04:46:48Z
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spelling 2013-06-25T14:19:37.7031881 v2 15086 2013-06-14 Trapped antihydrogen: A new frontier in fundamental physics e348e4d768ee19c1d0c68ce3a66d6303 0000-0002-7372-0784 Niels Madsen Niels Madsen true false 2013-06-14 SPH Antihydrogen, the bound state of an antiproton and a positron, has been produced at low energies at CERN since 2002. Antihydrogen is of interest for use in precision tests of nature's fundamental symmetries. The charge conjugation/parity/time reversal (CPT) theorem, a crucial part of the foundation of the standard model of elementary particles and interactions, demands that hydrogen and antihydrogen have the same spectrum. Given the current experimental precision of measurements on the hydrogen atom, subjecting antihydrogen to rigorous spectroscopic examination would constitute a compelling, model-independent test of CPT. Antihydrogen could also be used to study the gravitational behaviour of antimatter.However, until recently, experiments have produced antihydrogen that was not confined, precluding detailed study of its structure. Experimenters working to trap antihydrogen have faced the challenge of trapping and cooling relativistic antiprotons and using them to make antihydrogen cold enough to be trapped in a magnetic minimum trap with a depth of only 50 μeV. In November 2010 the ALPHA collaboration demonstrated the first trapping of antihydrogen, thus opening the door to precision measurements on anti-atoms which can soon be subjected to many of the same techniques as developed for atoms. The prospect for such measurements improved further with ALPHA's demonstration of 1000 s confinement of the anti-atoms in the summer of 2011 and the recent first detection of resonant quantum interactions in antihydrogen. Journal Article Journal of Physics: Conference Series 443 012005 1742-6596 30 6 2013 2013-06-30 10.1088/1742-6596/443/1/012005 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2013-06-25T14:19:37.7031881 2013-06-14T13:01:22.5909901 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics N Madsen 1 Niels Madsen 0000-0002-7372-0784 2
title Trapped antihydrogen: A new frontier in fundamental physics
spellingShingle Trapped antihydrogen: A new frontier in fundamental physics
Niels Madsen
title_short Trapped antihydrogen: A new frontier in fundamental physics
title_full Trapped antihydrogen: A new frontier in fundamental physics
title_fullStr Trapped antihydrogen: A new frontier in fundamental physics
title_full_unstemmed Trapped antihydrogen: A new frontier in fundamental physics
title_sort Trapped antihydrogen: A new frontier in fundamental physics
author_id_str_mv e348e4d768ee19c1d0c68ce3a66d6303
author_id_fullname_str_mv e348e4d768ee19c1d0c68ce3a66d6303_***_Niels Madsen
author Niels Madsen
author2 N Madsen
Niels Madsen
format Journal article
container_title Journal of Physics: Conference Series
container_volume 443
container_start_page 012005
publishDate 2013
institution Swansea University
issn 1742-6596
doi_str_mv 10.1088/1742-6596/443/1/012005
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 0
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description Antihydrogen, the bound state of an antiproton and a positron, has been produced at low energies at CERN since 2002. Antihydrogen is of interest for use in precision tests of nature's fundamental symmetries. The charge conjugation/parity/time reversal (CPT) theorem, a crucial part of the foundation of the standard model of elementary particles and interactions, demands that hydrogen and antihydrogen have the same spectrum. Given the current experimental precision of measurements on the hydrogen atom, subjecting antihydrogen to rigorous spectroscopic examination would constitute a compelling, model-independent test of CPT. Antihydrogen could also be used to study the gravitational behaviour of antimatter.However, until recently, experiments have produced antihydrogen that was not confined, precluding detailed study of its structure. Experimenters working to trap antihydrogen have faced the challenge of trapping and cooling relativistic antiprotons and using them to make antihydrogen cold enough to be trapped in a magnetic minimum trap with a depth of only 50 μeV. In November 2010 the ALPHA collaboration demonstrated the first trapping of antihydrogen, thus opening the door to precision measurements on anti-atoms which can soon be subjected to many of the same techniques as developed for atoms. The prospect for such measurements improved further with ALPHA's demonstration of 1000 s confinement of the anti-atoms in the summer of 2011 and the recent first detection of resonant quantum interactions in antihydrogen.
published_date 2013-06-30T03:17:13Z
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score 11.037056

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