Experimental evidence of antiproton reflection by a solid surface

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dc.creatorBianconi, A.
dc.creatorCorradini, M.
dc.creatorCristiano, A.
dc.creatorLeali, M.
dc.creatorRizzini, E. Lodi
dc.creatorVenturelli, L.
dc.creatorZurlo, N.
dc.creatorDona, R
dc.date2008-02-20
dc.date2008-09-03
dc.date.accessioned2026-07-07T10:16:10Z
dc.date.available2026-07-07T10:16:10Z
dc.descriptionWe report here experimental evidence of the reflection of a large fraction of a beam of low energy antiprotons by an aluminum wall. This derives from the analysis of a set of annihilations of antiprotons that come to rest in rarefied helium gas after hitting the end wall of the apparatus. A Monte Carlo simulation of the antiproton path in aluminum indicates that the observed reflection occurs primarily via a multiple Rutherford-style scattering on Al nuclei, at least in the energy range 1-10 keV where the phenomenon is most visible in the analyzed data. These results contradict the common belief according to which the interactions between matter and antimatter are dominated by the reciprocally destructive phenomenon of annihilation.
dc.description5 pages with 5 figures
dc.identifierhttps://arxiv.org/abs/0802.2893
dc.identifierhttp://arxiv.org/abs/0802.2893
dc.identifierPhys.Rev.A78:022506,2008
dc.identifierdoi:10.1103/PhysRevA.78.022506
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/173413
dc.subjectHigh Energy Physics - Experiment
dc.titleExperimental evidence of antiproton reflection by a solid surface
dc.typetext

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