Cargando…
Laser spectroscopy of antiprotonic helium and stringent constraint on the antiproton charge and mass
The antiprotonic helium atom-molecule (atomcule in short), pe/sup -/ He/sup 2+/=pHe/sup +/, first discovered at KEK and studied in detail at LEAR, is a unique metastable existence interfacing between matter and antimatter. Our recent high-resolution laser spectroscopy of pHe /sup +/ has reached a pr...
| Autores principales: | , , , , , , , , , , , , , , , |
|---|---|
| Lenguaje: | eng |
| Publicado: |
2000
|
| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/S0375-9474(99)00806-4 http://cds.cern.ch/record/444979 |
| _version_ | 1780895882957291520 |
|---|---|
| author | Hayano, R S Eades, John Von Egidy, T Hartmann, F J Hori, Masaki Horváth, D Ishikawa, T Ketzer, B Kumakura, M Maierl, C Morita, N Pohl, R Sugai, I Torii, H A Widmann, E Yamazaki, T |
| author_facet | Hayano, R S Eades, John Von Egidy, T Hartmann, F J Hori, Masaki Horváth, D Ishikawa, T Ketzer, B Kumakura, M Maierl, C Morita, N Pohl, R Sugai, I Torii, H A Widmann, E Yamazaki, T |
| author_sort | Hayano, R S |
| collection | CERN |
| description | The antiprotonic helium atom-molecule (atomcule in short), pe/sup -/ He/sup 2+/=pHe/sup +/, first discovered at KEK and studied in detail at LEAR, is a unique metastable existence interfacing between matter and antimatter. Our recent high-resolution laser spectroscopy of pHe /sup +/ has reached a precision of 0.5 ppm, and the agreement between our experimental values of transition energies and the calculations has become better than 2 ppm. This agreement in turn sets a severe constraint on the antiproton charge and mass. Future possibilities at the new antiproton decelerator (AD) are also discussed. (12 refs). |
| id | cern-444979 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2000 |
| record_format | invenio |
| spelling | cern-4449792019-09-30T06:29:59Zdoi:10.1016/S0375-9474(99)00806-4http://cds.cern.ch/record/444979engHayano, R SEades, JohnVon Egidy, THartmann, F JHori, MasakiHorváth, DIshikawa, TKetzer, BKumakura, MMaierl, CMorita, NPohl, RSugai, ITorii, H AWidmann, EYamazaki, TLaser spectroscopy of antiprotonic helium and stringent constraint on the antiproton charge and massOther Fields of PhysicsThe antiprotonic helium atom-molecule (atomcule in short), pe/sup -/ He/sup 2+/=pHe/sup +/, first discovered at KEK and studied in detail at LEAR, is a unique metastable existence interfacing between matter and antimatter. Our recent high-resolution laser spectroscopy of pHe /sup +/ has reached a precision of 0.5 ppm, and the agreement between our experimental values of transition energies and the calculations has become better than 2 ppm. This agreement in turn sets a severe constraint on the antiproton charge and mass. Future possibilities at the new antiproton decelerator (AD) are also discussed. (12 refs).oai:cds.cern.ch:4449792000 |
| spellingShingle | Other Fields of Physics Hayano, R S Eades, John Von Egidy, T Hartmann, F J Hori, Masaki Horváth, D Ishikawa, T Ketzer, B Kumakura, M Maierl, C Morita, N Pohl, R Sugai, I Torii, H A Widmann, E Yamazaki, T Laser spectroscopy of antiprotonic helium and stringent constraint on the antiproton charge and mass |
| title | Laser spectroscopy of antiprotonic helium and stringent constraint on the antiproton charge and mass |
| title_full | Laser spectroscopy of antiprotonic helium and stringent constraint on the antiproton charge and mass |
| title_fullStr | Laser spectroscopy of antiprotonic helium and stringent constraint on the antiproton charge and mass |
| title_full_unstemmed | Laser spectroscopy of antiprotonic helium and stringent constraint on the antiproton charge and mass |
| title_short | Laser spectroscopy of antiprotonic helium and stringent constraint on the antiproton charge and mass |
| title_sort | laser spectroscopy of antiprotonic helium and stringent constraint on the antiproton charge and mass |
| topic | Other Fields of Physics |
| url | https://dx.doi.org/10.1016/S0375-9474(99)00806-4 http://cds.cern.ch/record/444979 |
| work_keys_str_mv | AT hayanors laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT eadesjohn laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT vonegidyt laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT hartmannfj laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT horimasaki laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT horvathd laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT ishikawat laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT ketzerb laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT kumakuram laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT maierlc laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT moritan laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT pohlr laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT sugaii laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT toriiha laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT widmanne laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass AT yamazakit laserspectroscopyofantiprotonicheliumandstringentconstraintontheantiprotonchargeandmass |