Journal article
Study for a model-independent pole determination of overlapping resonances
Authors list: Binosi, Daniele; Pilloni, Alessandro; Tripolt, Ralf-Arno
Publication year: 2023
Journal: Physics Letters B
Volume number: 839
ISSN: 0370-2693
eISSN: 1873-2445
Open access status: Gold
DOI Link: https://doi.org/10.1016/j.physletb.2023.137809
Publisher: Elsevier
Abstract:
We apply a model-independent reconstruction method to experimental data in order to identify complex poles of overlapping resonances. The algorithm is based on the Schlessinger Point Method where data points are interpolated using a continued-fraction expression. Statistical uncertainties of the experimental data are propagated with resampling. In order to demonstrate the feasibility of this method, we apply it to the S-wave J/,/< -> gamma g0g0 decay. We benchmark the method on known analytic models, which allows us to estimate the deviation from the true value. We then perform the pole extraction from BESIII data, and identify the f0(1500), f0(1710), and f0(2020) scalar states. Our results are in reasonable agreement with recent results, which suggests the proposed method as a promising model-independent alternative for the determination of resonance poles that is solely based on available experimental data.(c) 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons .org /licenses /by /4 .0/). Funded by SCOAP3.
Citation Styles
Harvard Citation style: Binosi, D., Pilloni, A. and Tripolt, R. (2023) Study for a model-independent pole determination of overlapping resonances, Physics Letters B, 839, Article 137809. https://doi.org/10.1016/j.physletb.2023.137809
APA Citation style: Binosi, D., Pilloni, A., & Tripolt, R. (2023). Study for a model-independent pole determination of overlapping resonances. Physics Letters B. 839, Article 137809. https://doi.org/10.1016/j.physletb.2023.137809
Keywords
ANALYTICITY; SCALAR
