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The constraining effect of isospin filtering processes in low energy meson-baryon interactions
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SYSNO ASEP 0509988 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title The constraining effect of isospin filtering processes in low energy meson-baryon interactions Author(s) Feijoo, Aliau Eduardo Alberto (UJF-V) ORCID, SAI
Magas, V. K. (ES)
Ramos, A. (ES)Number of authors 3 Article number 040013 Source Title AIP Conference Proceedings, 2130. - Melville : American Institute of Physics Inc., 2019 - ISSN 0094-243X - ISBN 978-0-7354-1872-1 Number of pages 8 s. Publication form Print - P Action 13th International Conference on Hypernuclear and Strange Particle Physics Event date 24.06.2018 - 29.06.2018 VEvent location Portsmouth Country US - United States Event type WRD Language eng - English Country US - United States Keywords resonance ; baryons ; kaonic atoms 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) Institutional support UJF-V - RVO:61389005 UT WOS 000557835700042 EID SCOPUS 85070297411 DOI 10.1063/1.5118410 Annotation Motivated by the recent precise SIDDHARTA measurement of the energy shift and width of kaonic hydrogen, we have revisited the theoretical study of the meson-baryon interaction in the S = -1 sector, employing a chiral SU(3) lagrangian up to next-to-leading order (NLO) and implementing unitarization in coupled channels. The parameters of the model have been fitted to a large set of experimental data, paying attention to processes that are especially sensitive to the NLO terms, such as the K- p (rightarrow) K+Xi-, K0 Xi0 reactions. Explicit resonant terms have been included to explore their effects on the stability of the low-energy constants and the data description. We have also studied the role of new single isospin reactions and have found them to provide more homogeneous and reliable NLO parameters. We conclude that additional isospin filtering processes, like the KL0p(rightarrow)K+Xi0 reaction that could be measured at the proposed secondary KL0 beam at Jlab, would put valuable constraints on the chiral models describing the S = -1 meson-baryon interaction. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2020
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