Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud

Adrich, P; Blumer, P; Caratsch, G; Chung, M; Cladé, P; Comini, P; Crivelli, P; Dalkarov, O; Debu, P; Douillet, A; Drapier, D; Froelich, P; Garroum, N; Guellati-Khelifa, S; Guyomard, J; Hervieux, P-A; Hilico, L; Indelicato, P; Jonsell, S; Karr, J-P; Kim, B; Kim, E-S; Kim, S; Ko, Y.J; Kosinski, T; Kuroda, N; Latacz, B.M; Lee, B; Lee, H; Lee, J; Lim, E; Liszkay, L; Lunney, D; Manfredi, G; Mansoulié, B; Matusiak, M; Nesvizhevsky, V; Nez, F; Niang, S; Ohayon, B; Park, K; Paul, N; Pérez, P; Regenfus, C; Reynaud, S; Roumegou, C; Roussé, J-Y; Sacquin, Y; Sadowski, G; Sarkisyan, J; Sato, M; Schmidt-Kaler, F; Staszczak, M; Szymczyk, K; Tanaka, T.A; Tuchming, B; Vallage, B; van der Werf, D.P; Voronin, A; Won, D; Wronka, S; Yamazaki, Y; Yoo, K-H; Yzombard, P

Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud

Abstract

International audienceWe report on the first production of an antihydrogen beam by charge exchange of 6.1 keV antiprotons with a cloud of positronium in the GBAR experiment at CERN. The antiproton beam was delivered by the AD/ELENA facility. The positronium target was produced from a positron beam itself obtained from an electron linear accelerator. We observe an excess over background indicating antihydrogen production with a significance of 3-4 standard deviations

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Last time updated on 22/07/2023