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An experimental limit on the charge of antihydrogen
The properties of antihydrogen are expected to be identical to those of hydrogen, and any differences would constitute a profound challenge to the fundamental theories of physics. The most commonly discussed antiatom-based tests of these theories are searches for antihydrogen-hydrogen spectral diffe...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2014
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1038/ncomms4955 http://cds.cern.ch/record/1706211 |
| _version_ | 1780936483743465472 |
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| author | Amole, C Ashkezari, M D Baquero-Ruiz, M Bertsche, W Butler, E Capra, A Cesar, C L Charlton, M Eriksson, S Fajans, J Friesen, T Fujiwara, M C Gill, D R Gutierrez, A Hangst, J S Hardy, W N Hayden, M E Isaac, C A Jonsell, S Kurchaninov, L Little, A Madsen, N McKenna, J T K Menary, S Napoli, S C Nolan, P Olchanski, K Olin, A Povilus, A Pusa, P Rasmussen, C Ø Robicheaux, F Sarid, E Silveira, D M So, C Tharp, T D Thompson, R I Van der Werf, D P Vendeiro, Z Wurtele, J S Zhmoginov, A I Charman, A E |
| author_facet | Amole, C Ashkezari, M D Baquero-Ruiz, M Bertsche, W Butler, E Capra, A Cesar, C L Charlton, M Eriksson, S Fajans, J Friesen, T Fujiwara, M C Gill, D R Gutierrez, A Hangst, J S Hardy, W N Hayden, M E Isaac, C A Jonsell, S Kurchaninov, L Little, A Madsen, N McKenna, J T K Menary, S Napoli, S C Nolan, P Olchanski, K Olin, A Povilus, A Pusa, P Rasmussen, C Ø Robicheaux, F Sarid, E Silveira, D M So, C Tharp, T D Thompson, R I Van der Werf, D P Vendeiro, Z Wurtele, J S Zhmoginov, A I Charman, A E |
| author_sort | Amole, C |
| collection | CERN |
| description | The properties of antihydrogen are expected to be identical to those of hydrogen, and any differences would constitute a profound challenge to the fundamental theories of physics. The most commonly discussed antiatom-based tests of these theories are searches for antihydrogen-hydrogen spectral differences (tests of CPT (charge-parity-time) invariance) or gravitational differences (tests of the weak equivalence principle). Here we, the ALPHA Collaboration, report a different and somewhat unusual test of CPT and of quantum anomaly cancellation. A retrospective analysis of the influence of electric fields on antihydrogen atoms released from the ALPHA trap finds a mean axial deflection of 4.1±3.4 mm for an average axial electric field of 0.51 V mm−1. Combined with extensive numerical modelling, this measurement leads to a bound on the charge Qe of antihydrogen of Q=(−1.3±1.1±0.4) × 10−8. Here, e is the unit charge, and the errors are from statistics and systematic effects. |
| id | cern-1706211 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2014 |
| record_format | invenio |
| spelling | cern-17062112022-08-10T20:31:44Zdoi:10.1038/ncomms4955http://cds.cern.ch/record/1706211engAmole, CAshkezari, M DBaquero-Ruiz, MBertsche, WButler, ECapra, ACesar, C LCharlton, MEriksson, SFajans, JFriesen, TFujiwara, M CGill, D RGutierrez, AHangst, J SHardy, W NHayden, M EIsaac, C AJonsell, SKurchaninov, LLittle, AMadsen, NMcKenna, J T KMenary, SNapoli, S CNolan, POlchanski, KOlin, APovilus, APusa, PRasmussen, C ØRobicheaux, FSarid, ESilveira, D MSo, CTharp, T DThompson, R IVan der Werf, D PVendeiro, ZWurtele, J SZhmoginov, A ICharman, A EAn experimental limit on the charge of antihydrogenOther Fields of PhysicsThe properties of antihydrogen are expected to be identical to those of hydrogen, and any differences would constitute a profound challenge to the fundamental theories of physics. The most commonly discussed antiatom-based tests of these theories are searches for antihydrogen-hydrogen spectral differences (tests of CPT (charge-parity-time) invariance) or gravitational differences (tests of the weak equivalence principle). Here we, the ALPHA Collaboration, report a different and somewhat unusual test of CPT and of quantum anomaly cancellation. A retrospective analysis of the influence of electric fields on antihydrogen atoms released from the ALPHA trap finds a mean axial deflection of 4.1±3.4 mm for an average axial electric field of 0.51 V mm−1. Combined with extensive numerical modelling, this measurement leads to a bound on the charge Qe of antihydrogen of Q=(−1.3±1.1±0.4) × 10−8. Here, e is the unit charge, and the errors are from statistics and systematic effects.oai:cds.cern.ch:17062112014 |
| spellingShingle | Other Fields of Physics Amole, C Ashkezari, M D Baquero-Ruiz, M Bertsche, W Butler, E Capra, A Cesar, C L Charlton, M Eriksson, S Fajans, J Friesen, T Fujiwara, M C Gill, D R Gutierrez, A Hangst, J S Hardy, W N Hayden, M E Isaac, C A Jonsell, S Kurchaninov, L Little, A Madsen, N McKenna, J T K Menary, S Napoli, S C Nolan, P Olchanski, K Olin, A Povilus, A Pusa, P Rasmussen, C Ø Robicheaux, F Sarid, E Silveira, D M So, C Tharp, T D Thompson, R I Van der Werf, D P Vendeiro, Z Wurtele, J S Zhmoginov, A I Charman, A E An experimental limit on the charge of antihydrogen |
| title | An experimental limit on the charge of antihydrogen |
| title_full | An experimental limit on the charge of antihydrogen |
| title_fullStr | An experimental limit on the charge of antihydrogen |
| title_full_unstemmed | An experimental limit on the charge of antihydrogen |
| title_short | An experimental limit on the charge of antihydrogen |
| title_sort | experimental limit on the charge of antihydrogen |
| topic | Other Fields of Physics |
| url | https://dx.doi.org/10.1038/ncomms4955 http://cds.cern.ch/record/1706211 |
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