Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Aspects of the ETH model of the pion-nucleon interaction
Authors: Matsinos, Evangelos
Rasche, Günther
DOI: 10.1016/j.nuclphysa.2014.04.021
Published in: Nuclear Physics A
Volume(Issue): 927
Page(s): 147
Pages to: 194
Issue Date: 3-Nov-2013
Publisher / Ed. Institution: Elsevier
ISSN: 0375-9474
1873-1554
Language: English
Subjects: High Energy Physics - Phenomenology
Subject (DDC): 530: Physics
Abstract: The ETH model of the pion-nucleon (πN) interaction contains t-channel σ- and ρ-exchange graphs, as well as the s- and u-channel contributions with the well-established s and p baryon states with masses below 2 GeV as virtual particles; the model amplitudes obey crossing symmetry and isospin invariance. In the present work, we give the analytical expressions for the model contributions to the K-matrix elements up to (and including) the f waves. We also extract a new phase-shift solution after performing a partial-wave analysis of meson-factory π±p elastic-scattering data below 100 MeV; included in our results now are also the effects of the variation of the σ-meson mass in the interval which is currently recommended by the Particle-Data Group. Finally, we revisit the subject of the πN Σ term and, using the model amplitudes, obtain Σ=72.4±3.1 MeV. Our prediction agrees well with the result extracted with Olsson's method, after a few flaws in his paper were corrected.
URI: https://digitalcollection.zhaw.ch/handle/11475/15773
Fulltext version: Published version
License (according to publishing contract): Licence according to publishing contract
Departement: School of Engineering
Organisational Unit: Institute of Applied Mathematics and Physics (IAMP)
Institute of Mechatronic Systems (IMS)
Appears in collections:Publikationen School of Engineering

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Matsinos, E., & Rasche, G. (2013). Aspects of the ETH model of the pion-nucleon interaction. Nuclear Physics A, 927, 147–194. https://doi.org/10.1016/j.nuclphysa.2014.04.021
Matsinos, E. and Rasche, G. (2013) ‘Aspects of the ETH model of the pion-nucleon interaction’, Nuclear Physics A, 927, pp. 147–194. Available at: https://doi.org/10.1016/j.nuclphysa.2014.04.021.
E. Matsinos and G. Rasche, “Aspects of the ETH model of the pion-nucleon interaction,” Nuclear Physics A, vol. 927, pp. 147–194, Nov. 2013, doi: 10.1016/j.nuclphysa.2014.04.021.
MATSINOS, Evangelos und Günther RASCHE, 2013. Aspects of the ETH model of the pion-nucleon interaction. Nuclear Physics A. 3 November 2013. Bd. 927, S. 147–194. DOI 10.1016/j.nuclphysa.2014.04.021
Matsinos, Evangelos, and Günther Rasche. 2013. “Aspects of the ETH Model of the Pion-Nucleon Interaction.” Nuclear Physics A 927 (November): 147–94. https://doi.org/10.1016/j.nuclphysa.2014.04.021.
Matsinos, Evangelos, and Günther Rasche. “Aspects of the ETH Model of the Pion-Nucleon Interaction.” Nuclear Physics A, vol. 927, Nov. 2013, pp. 147–94, https://doi.org/10.1016/j.nuclphysa.2014.04.021.


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