CERN Accelerating science

Article
Report number	arXiv:2306.15801
Title	Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud
Related title	Publisher Erratum: Production of antihydrogen atoms by 6 keV antiprotons through a positronium cloud [doi: 10.1140/epjc/s10052-023-12137-y]
Author(s)	Adrich, P. (NCBJ, Swierk) ; Blumer, P. (Zurich, ETH) ; Caratsch, G. (Zurich, ETH) ; Chung, M. (UNIST, Ulsan) ; Cladé, P. (Paris, Lab. Kastler Brossel) ; Comini, P. (IRFU, Saclay) ; Crivelli, P. (Zurich, ETH) ; Dalkarov, O. (Unlisted) ; Debu, P. (IRFU, Saclay) ; Douillet, A. (Paris, Lab. Kastler Brossel ; U. Evry) ; Drapier, D. (Paris, Lab. Kastler Brossel) ; Froelich, P. (Stockholm U. ; Stockholm U., OKC) ; Garroum, N. (Paris, Lab. Kastler Brossel) ; Guellati-Khelifa, S. (Paris, Lab. Kastler Brossel ; CNAM, Paris) ; Guyomard, J. (Paris, Lab. Kastler Brossel) ; Hervieux, P-A. (IPCMS, Strasbourg) ; Hilico, L. (Paris, Lab. Kastler Brossel ; U. Evry) ; Indelicato, P. (Paris, Lab. Kastler Brossel) ; Jonsell, S. (Stockholm U. ; Stockholm U., OKC) ; Karr, J-P. (Paris, Lab. Kastler Brossel ; U. Evry) ; Kim, B. (IBS, Daejeon, CUP) ; Kim, S. (Seoul Natl. U.) ; Kim, E-S. (Korea U.) ; Ko, Y.J. (IBS, Daejeon, CUP) ; Kosinski, T. (NCBJ, Swierk) ; Kuroda, N. (Tokyo U., Komaba) ; Latacz, B.M. (IRFU, Saclay ; CERN) ; Lee, B. (Seoul Natl. U.) ; Lee, H. (Seoul Natl. U.) ; Lee, J. (IBS, Daejeon, CUP) ; Lim, E. (Korea U.) ; Liszkay, L. (IRFU, Saclay) ; Lunney, D. (IJCLab, Orsay) ; Manfredi, G. (IPCMS, Strasbourg) ; Mansoulié, B. (IRFU, Saclay) ; Matusiak, M. (NCBJ, Swierk) ; Nesvizhevsky, V. (Laue-Langevin Inst.) ; Nez, F. (Paris, Lab. Kastler Brossel) ; Niang, S. (IJCLab, Orsay) ; Ohayon, B. (Zurich, ETH) ; Park, K. (IBS, Daejeon, CUP ; Seoul Natl. U.) ; Paul, N. (Paris, Lab. Kastler Brossel) ; Pérez, P. (IRFU, Saclay) ; Regenfus, C. (Zurich, ETH) ; Reynaud, S. (Paris, Lab. Kastler Brossel) ; Roumegou, C. (IJCLab, Orsay) ; Roussé, J-Y. (IRFU, Saclay) ; Sacquin, Y. (IRFU, Saclay) ; Sadowski, G. (IRFU, Saclay) ; Sarkisyan, J. (Zurich, ETH) ; Sato, M. (Tokyo U., Komaba) ; Schmidt-Kaler, F. (Mainz U., Inst. Phys.) ; Staszczak, M. (NCBJ, Swierk) ; Szymczyk, K. (NCBJ, Swierk) ; Tanaka, T.A. (Tokyo U., Komaba) ; Tuchming, B. (IRFU, Saclay) ; Vallage, B. (IRFU, Saclay) ; Voronin, A. (Unlisted) ; van der Werf, D.P. (Swansea U.) ; Welker, A. (CERN ; Paris U., VI-VII) ; Won, D. (Seoul Natl. U.) ; Wronka, S. (NCBJ, Swierk) ; Yamazaki, Y. (RIKEN (main)) ; Yoo, K-H. (UNIST, Ulsan) ; Yzombard, P. (Paris, Lab. Kastler Brossel)
Publication	2023-11-06
Imprint	2023-06-27
Number of pages	18
In:	Eur. Phys. J. C 83, 11 (2023) pp.1004
DOI	10.1140/epjc/s10052-023-12137-y 10.1140/epjc/s10052-023-12244-w (erratum) 10.1140/epjc/s10052-024-13515-w (erratum)
Subject category	physics.ins-det ; Detectors and Experimental Techniques ; hep-ex ; Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN ELENA
Abstract	We 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.
Copyright/License	publication: © 2023-2024 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³ preprint: (License: CC BY 4.0)

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