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Title: The S=−1 meson-baryon interaction and the role of isospin filtering processes
Author: Feijoo Aliau, Albert
Magas, Volodymyr
Ramos Gómez, Àngels
Keywords: Interaccions d'hadrons
Física de partícules
Física nuclear
Hadron interactions
Particle physics
Nuclear physics
Issue Date: 22-Mar-2019
Publisher: American Physical Society
Abstract: A study of the meson-baryon interaction in the S = −1 sector is performed, employing a chiral SU(3) Lagrangian up to next-to-leading order (NLO) and implementing unitarization in coupled channels. The model is constrained by a large set of experimental data, paying special attention to processes that are sensitive to the NLO contributions, such as the K− p → K+−, K00 reactions. The consideration of additional cross sections in single isospin channels, K− p → η , η , has been found to provide NLO low-energy constants of rather similar size. The stability of these constants has also been tested by the inclusion of explicit resonant terms. Predictions for new isospin filtering processes, like the I = 1 K0 L p → K+0 reaction that could be measured at the proposed secondary K0 L beam at Jlab, or the weak decay of the b into a J/ and different meson-baryon pairs in I = 0, available at LHCb, are presented. The measurement of such reactions would put valuable constraints on the chiral models describing the S = −1 meson-baryon interaction.
Note: Reproducció del document publicat a:
It is part of: Physical Review C, 2019, vol. 99, num. 3, p. 035211-1-035211-18
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ISSN: 2469-9985
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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