Number of the records: 1
The continuum spectrum of hypernuclear trios
- 1.
SYSNO ASEP 0533998 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The continuum spectrum of hypernuclear trios Author(s) Schäfer, Martin (UJF-V) ORCID, RID
Bazak, B. (IL)
Barnea, N. (IL)
Mareš, Jiří (UJF-V) RID, ORCIDNumber of authors 4 Article number 135614 Source Title Physics Letters. B. - : Elsevier - ISSN 0370-2693
Roč. 808, SEP (2020)Number of pages 6 s. Publication form Print - P Language eng - English Country NL - Netherlands Keywords hypernuclei ; effective field theory ; hypertriton Subject RIV BE - Theoretical Physics OECD category Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect) R&D Projects GA19-19640S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UJF-V - RVO:61389005 UT WOS 000571769700005 EID SCOPUS 85088380855 DOI 10.1016/j.physletb.2020.135614 Annotation The spectrum of hypernuclear trios composed of a Lambda baryon and two nucleons is the subject of an ongoing experimental campaign, aiming to study the interaction of the Lambda particle with a neutron, and the 3-body Lambda-nucleon-nucleon force. In this manuscript we utilize baryonic effective field theory at leading order, constrained to reproduce the available low energy light hypernuclear data, to study the continuum spectrum of such hypernuclear trios. Using the complex scaling method and the inverse analytic continuation in the coupling constant method we find the existence of a virtual state in the Lambda np J(pi) = 3/2(+) channel, leading to cross-section enhancement near threshold. For the Lambda nn J(pi) = 1/2(+) channel we predict a resonance state. Depending, however, on the value of the Lambda N scattering length, the resonance pole moves from the physical to the unphysical complex energy sheet within the experimental bounds. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2021 Electronic address https://doi.org/10.1016/j.physletb.2020.135614
Number of the records: 1