Ab initio scattering calculation in three-body Coulomb systems: e+-H, e--H and e+-He+

Research outputpeer-review

Abstract

We present the results of our detailed calculations of scattering characteristics in e −e +p¯ (e −e +p) and e +e −He++ systems with zero total orbital momentum by direct solving the Faddeev–Merkuriev equations in the differential form. We calculate all possible cross-sections in the low-energy region which admits up to seven open channels including the rearrangement channels of ground and excited states of antihydrogen, positronium and helium ion formations. All sharp resonances of the systems obtained and approved previously by a number of authors are clearly reproduced in the calculated cross sections. Alternatively, the exterior complex scaling approach has been used for calculating resonant energies. It confirmed the existence of reported by other authors broad resonances in the e +e −He++ system. Prominent oscillations of Gailitis–Damburg type have been found in cross sections for energies above the threshold corresponding to n = 2 state of antihydrogen.
Original languageEnglish
Title of host publicationNuclear Theory in the Supercomputing Era – 2018 (NTSE-2018)
Subtitle of host publicationInternational Conference. Proceedings
EditorsA.M. Shirokov, A.I. Mazur
Place of PublicationKhabarovsk
PublisherТихоокеанский государственный университет
Pages137-149
ISBN (Electronic)9785738930430
Publication statusPublished - 2019
EventNuclear Theory in the Supercomputing Era -2018: International Conference - Daejeon
Duration: 29 Oct 20182 Nov 2018

Conference

ConferenceNuclear Theory in the Supercomputing Era -2018
Abbreviated titleNTSE-2018
CountryKorea, Republic of
CityDaejeon
Period29/10/182/11/18

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