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

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

in Antihydrogen / Antiparticles / Antiprotons / Astronomy / Astrophysics and Cosmology / Charge exchange / Collaboration / Deceleration / Drift tubes / Electron beams / Electrons / Elementary Particles / Energy / Experiments / Hadrons / Heavy Ions / High Energy Physics - Experiment / Instrumentation and Detectors / Measurement Science and Instrumentation / Nuclear Energy / Nuclear Physics / Particle beams / Physics / Physics and Astronomy / Positron beams / Positronium / Positrons / Quantum Field Theories / Quantum Field Theory / Regular Article - Experimental Physics / String Theory

2023

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

2023

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2023

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Journal Article

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

Jonsell, S.,

Indelicato, P.,

Lee, H.,

Matusiak, M.,

Ohayon, B.,

Yoo, K.-H.,

Manfredi, G.,

Guellati-Khelifa, S.,

Nesvizhevsky, V.,

Vallage, B.,

Won, D.,

Wronka, S.,

Lunney, D.,

Adrich, P.,

Dalkarov, O.,

Niang, S.,

Yzombard, P.,

Crivelli, P.,

Chung, M.,

Welker, A.,

Sacquin, Y.,

Staszczak, M.,

Paul, N.,

Regenfus, C.,

Tanaka, T. A.,

Hervieux, P.-A.,

Sato, M.,

Drapier, D.,

Pérez, P.,

Douillet, A.,

van der Werf, D. P.,

Sarkisyan, J.,

Sadowski, G.,

Roumegou, C.,

Lee, J.,

Karr, J.-P.,

Nez, F.,

Lee, B.,

Park, K.,

Froelich, P.,

Roussé, J.-Y.,

Ko, Y. J.,

Debu, P.,

Guyomard, J.,

Liszkay, L.,

Hilico, L.,

Kim, S.,

Mansoulié, B.,

Kuroda, N.,

Kosinski, T.,

Comini, P.,

Garroum, N.,

Yamazaki, Y.,

Blumer, P.,

Szymczyk, K.,

Caratsch, G.,

Lim, E.,

Kim, E.-S.,

Reynaud, S.,

Voronin, A.,

Kim, B.,

Schmidt-Kaler, F.,

Tuchming, B.,

Latacz, B. M.,

Cladé, P.

2023

Overview

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 100 keV antiproton beam delivered by the AD/ELENA facility was further decelerated with a pulsed drift tube. A 9 MeV electron beam from a linear accelerator produced a low energy positron beam. The positrons were accumulated in a set of two Penning–Malmberg traps. The positronium target cloud resulted from the conversion of the positrons extracted from the traps. The antiproton beam was steered onto this positronium cloud to produce the antiatoms. We observe an excess over background indicating antihydrogen production with a significance of 3–4 standard deviations.

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Publisher

Springer Berlin Heidelberg,Springer,Springer Nature B.V,Springer Verlag (Germany),SpringerOpen

Subject

/ Astrophysics and Cosmology

/ Charge exchange

/ Collaboration