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Search for laser-induced formation of antihydrogen atoms |
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| Authors: | Amoretti M Amsler C Bonomi G Bowe P D Canali C Carraro C Cesar C L Charlton M Ejsing A M Fontana A Fujiwara M C Funakoshi R Genova P Hangst J S Hayano R S Jørgensen L V Kellerbauer A Lagomarsino V Lodi Rizzini E Macrì M Madsen N Manuzio G Mitchard D Montagna P Posada L G C Pruys H Regenfus C Rotondi A Telle H H Testera G Van der Werf D P Variola A Venturelli L Yamazaki Y Zurlo N;ATHENA Collaboration |
| Institution: | Istituto Nazionale di Fisica Nucleare, Sezione di Genova, 16146 Genova, Italy. |
| Abstract: | Antihydrogen can be synthesized by mixing antiprotons and positrons in a Penning trap environment. Here an experiment to stimulate the formation of antihydrogen in the n = 11 quantum state by the introduction of light from a CO2 continuous wave laser is described. An overall upper limit of 0.8% with 90% C.L. on the laser-induced enhancement of the recombination has been found. This result strongly suggests that radiative recombination contributes negligibly to the antihydrogen formed in the experimental conditions used by the ATHENA Collaboration. |
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