Abstract
In this paper we show how the ATHENA data samples on the antihydrogen (\({\bar{\rm H}}\)) formation in very different conditions provide useful information on the two different possible mechanisms: the 3-body reaction (\(\bar{p}+{e^+}+{e^+}\rightarrow {\bar{\rm H}}+ e^+\)) and the 2-body reaction (\(\bar{p}+{\rm e^+}\rightarrow {\bar{\rm H}}+{h\nu}\)).
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Lodi Rizzini, E., Venturelli, L. & Zurlo, N. Antihydrogen (hydrogen) atom formation. Hyperfine Interact 193, 313–319 (2009). https://doi.org/10.1007/s10751-009-0017-6
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DOI: https://doi.org/10.1007/s10751-009-0017-6