Laser spectroscopy of long-lived antiprotonic and pionic helium in superfluid helium

The PiHe collaboration of PSI recently carried out laser spectroscopy of an infrared transition in three-body pionic helium atoms that were synthesized in a superfluid (He-II) helium target. Analogous measurements of antiprotonic helium atoms embedded in liquid helium were carried out by the ASACUSA...

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Detalles Bibliográficos
Autores principales: Hori, M, Aghai-Khozani, H, Sótér, A, Dax, A, Barna, D, Venturelli𝑒, L
Lenguaje:eng
Publicado: 2022
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.22323/1.414.0141
http://cds.cern.ch/record/2869523
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author Hori, M
Aghai-Khozani, H
Sótér, A
Dax, A
Barna, D
Venturelli𝑒, L
author_facet Hori, M
Aghai-Khozani, H
Sótér, A
Dax, A
Barna, D
Venturelli𝑒, L
author_sort Hori, M
collection CERN
description The PiHe collaboration of PSI recently carried out laser spectroscopy of an infrared transition in three-body pionic helium atoms that were synthesized in a superfluid (He-II) helium target. Analogous measurements of antiprotonic helium atoms embedded in liquid helium were carried out by the ASACUSA collaboration of CERN. Spectral lines of unexpectedly narrow, sub-gigahertz linewidth were revealed in the antiproton case. An abrupt reduction in the linewidth was observed when the liquid helium (He-I) surrounding the atom transitioned into the superfluid phase.
id cern-2869523
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2022
record_format invenio
spelling cern-28695232023-09-06T21:08:51Zdoi:10.22323/1.414.0141http://cds.cern.ch/record/2869523engHori, MAghai-Khozani, HSótér, ADax, ABarna, DVenturelli𝑒, LLaser spectroscopy of long-lived antiprotonic and pionic helium in superfluid heliumParticle Physics - PhenomenologyThe PiHe collaboration of PSI recently carried out laser spectroscopy of an infrared transition in three-body pionic helium atoms that were synthesized in a superfluid (He-II) helium target. Analogous measurements of antiprotonic helium atoms embedded in liquid helium were carried out by the ASACUSA collaboration of CERN. Spectral lines of unexpectedly narrow, sub-gigahertz linewidth were revealed in the antiproton case. An abrupt reduction in the linewidth was observed when the liquid helium (He-I) surrounding the atom transitioned into the superfluid phase.oai:cds.cern.ch:28695232022
spellingShingle Particle Physics - Phenomenology
Hori, M
Aghai-Khozani, H
Sótér, A
Dax, A
Barna, D
Venturelli𝑒, L
Laser spectroscopy of long-lived antiprotonic and pionic helium in superfluid helium
title Laser spectroscopy of long-lived antiprotonic and pionic helium in superfluid helium
title_full Laser spectroscopy of long-lived antiprotonic and pionic helium in superfluid helium
title_fullStr Laser spectroscopy of long-lived antiprotonic and pionic helium in superfluid helium
title_full_unstemmed Laser spectroscopy of long-lived antiprotonic and pionic helium in superfluid helium
title_short Laser spectroscopy of long-lived antiprotonic and pionic helium in superfluid helium
title_sort laser spectroscopy of long-lived antiprotonic and pionic helium in superfluid helium
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.22323/1.414.0141
http://cds.cern.ch/record/2869523
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AT aghaikhozanih laserspectroscopyoflonglivedantiprotonicandpionicheliuminsuperfluidhelium
AT sotera laserspectroscopyoflonglivedantiprotonicandpionicheliuminsuperfluidhelium
AT daxa laserspectroscopyoflonglivedantiprotonicandpionicheliuminsuperfluidhelium
AT barnad laserspectroscopyoflonglivedantiprotonicandpionicheliuminsuperfluidhelium
AT venturelliel laserspectroscopyoflonglivedantiprotonicandpionicheliuminsuperfluidhelium

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