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

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.

References in corpus (8)

• Lorentz and CPT tests with hydrogen, antihydrogen, and related systems
• Measurement of the ortho-positronium confinement energy in mesoporous thin films
• The anti-proton charge radius
• Positron production using a 9 MeV electron linac for the GBAR experiment
• Positron accumulation in the GBAR experiment
• Analysis of the timing of freely falling antihydrogen
• Positron extraction to an electromagnetic field free region
• RF gymnastics in synchrotrons

Cited by in corpus (3)

• Production and study of antideuterium with the GBAR beamline
• Many-body theory predictions of positron binding energies in five-membered heterocycles involving N, O, S and NH substituents
• Coupled cluster theory for positron binding in anions and polyatomic molecules