Fundamental properties of resonances

Ceci, Saša and Hadžimehmedović, M. and Osmanović, H. and Percan, A. and Zauner, B. (2017) Fundamental properties of resonances. Scientific Reports, 7. Art. No. 45246-7. ISSN 2045-2322

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All resonances, from hydrogen nuclei excited by the high-energy gamma rays in deep space to newly discovered particles produced in Large Hadron Collider, should be described by the same fundamental physical quantities. However, two distinct sets of properties are used to describe resonances: the pole parameters (complex pole position and residue) and the Breit-Wigner parameters (mass, width, and branching fractions). There is an ongoing decades-old debate on which one of them should be abandoned. In this study of nucleon resonances appearing in the elastic pion-nucleon scattering we discover an intricate interplay of the parameters from both sets, and realize that neither set is completely independent or fundamental on its own.

Item Type: Article
Date: 2017
Subjects: NATURAL SCIENCES > Physics
Additional Information: © The Author(s) 2017. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit Received: 06 January 2017. Accepted: 19 February 2017. Published: 27 March 2017.
Divisions: Faculty of Science > Department of Physics
Publisher: Nature Publishing Group
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 13 Nov 2017 20:35
Last Modified: 13 Nov 2017 20:36

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