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 |
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| Affiliation: | Istituto Nazionale di Fisica Nucleare, Sezione di Genova, 16146 Genova, Italy. |
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| 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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