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Title: Poles as the only true resonant-state signals extracted from a worldwide collection of partial-wave amplitudes using only one, well controlled pole-extraction method

Abstract

Each and every energy-dependent partial-wave analysis is parametrizing the pole positions in a procedure defined by the way the continuous energy dependence is implemented. These pole positions are, henceforth, inherently model dependent. To reduce this model dependence, we use only one, coupled-channel, unitary, fully analytic method based on the isobar approximation to extract the pole positions from each available member of the worldwide collection of partial-wave amplitudes, which are understood as nothing more but a good energy-dependent representation of genuine experimental numbers assembled in a form of partial-wave data. In that way, the model dependence related to the different assumptions on the analytic form of the partial-wave amplitudes is avoided, and the true confidence limit for the existence of a particular resonant state, at least in one model, is established. The way the method works and first results are demonstrated for the S{sub 11} partial wave.

Authors:
; ;  [1]; ;  [2]
  1. Univerzity of Tuzla, Faculty of Science, Univerzitetska 4, 75000 Tuzla (Bosnia and Herzegowina)
  2. Rudjer Boskovic Institute, Bijenicka cesta 54, P.O. Box 180, HR-10002 Zagreb (Croatia)
Publication Date:
OSTI Identifier:
21596785
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.84.035204; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AMPLITUDES; APPROXIMATIONS; COUPLED CHANNEL THEORY; ENERGY DEPENDENCE; EXTRACTION; PARTIAL WAVES; CALCULATION METHODS; SEPARATION PROCESSES

Citation Formats

Hadzimehmedovic, M., Osmanovic, H., Stahov, J., Ceci, S., and Svarc, A. Poles as the only true resonant-state signals extracted from a worldwide collection of partial-wave amplitudes using only one, well controlled pole-extraction method. United States: N. p., 2011. Web. doi:10.1103/PHYSREVC.84.035204.
Hadzimehmedovic, M., Osmanovic, H., Stahov, J., Ceci, S., & Svarc, A. Poles as the only true resonant-state signals extracted from a worldwide collection of partial-wave amplitudes using only one, well controlled pole-extraction method. United States. doi:10.1103/PHYSREVC.84.035204.
Hadzimehmedovic, M., Osmanovic, H., Stahov, J., Ceci, S., and Svarc, A. Thu . "Poles as the only true resonant-state signals extracted from a worldwide collection of partial-wave amplitudes using only one, well controlled pole-extraction method". United States. doi:10.1103/PHYSREVC.84.035204.
@article{osti_21596785,
title = {Poles as the only true resonant-state signals extracted from a worldwide collection of partial-wave amplitudes using only one, well controlled pole-extraction method},
author = {Hadzimehmedovic, M. and Osmanovic, H. and Stahov, J. and Ceci, S. and Svarc, A.},
abstractNote = {Each and every energy-dependent partial-wave analysis is parametrizing the pole positions in a procedure defined by the way the continuous energy dependence is implemented. These pole positions are, henceforth, inherently model dependent. To reduce this model dependence, we use only one, coupled-channel, unitary, fully analytic method based on the isobar approximation to extract the pole positions from each available member of the worldwide collection of partial-wave amplitudes, which are understood as nothing more but a good energy-dependent representation of genuine experimental numbers assembled in a form of partial-wave data. In that way, the model dependence related to the different assumptions on the analytic form of the partial-wave amplitudes is avoided, and the true confidence limit for the existence of a particular resonant state, at least in one model, is established. The way the method works and first results are demonstrated for the S{sub 11} partial wave.},
doi = {10.1103/PHYSREVC.84.035204},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 3,
volume = 84,
place = {United States},
year = {2011},
month = {9}
}