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Title: The impact of $$K^{+}\Lambda$$ photoproduction on the resonance spectrum

Abstract

The Julich-Bonn coupled-channel framework is extended to $$K^+\Lambda$$ photoproduction. The spectrum of nucleon and $$\Delta$$ resonances is extracted from simultaneous fits to several pion-induced reactions in addition to pion, eta and $$K^+\Lambda$$ photoproduction off the proton. More than 40,000 data points up to a center-of-mass energy of E$$\sim$$2.3 GeV including recently measured double-polarization observables are analyzed. The influence of the $$\gamma p\to K^+\Lambda$$ channel on the extracted resonance parameters and the appearance of states not seen in other channels is investigated. Furthermore, the Julich-Bonn model includes effective three-body channels and guarantees unitarity and analyticity, which is a prerequisite for a reliable determination of the resonance spectrum in terms of poles and residues.

Authors:
 [1];  [2];  [3]
  1. Univ. Bonn, Bonn (Germany)
  2. The George Washington Univ., Washington, D.C. (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  3. Univ. Bonn, Bonn (Germany); Forschungszentrum Julich, Julich (Germany)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1462176
Report Number(s):
JLAB-THY-18-2640; DOE/OR/23177-4341; arXiv:1801.10458
Journal ID: ISSN 1434-6001; PII: 12541; TRN: US1902109
Grant/Contract Number:  
AC05-06OR23177
Resource Type:
Accepted Manuscript
Journal Name:
European Physical Journal. A
Additional Journal Information:
Journal Volume: 54; Journal Issue: 6; Journal ID: ISSN 1434-6001
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Ronchen, D., Doring, M., and MeiBner, U. -G. The impact of $K^{+}\Lambda$ photoproduction on the resonance spectrum. United States: N. p., 2018. Web. doi:10.1140/epja/i2018-12541-3.
Ronchen, D., Doring, M., & MeiBner, U. -G. The impact of $K^{+}\Lambda$ photoproduction on the resonance spectrum. United States. https://doi.org/10.1140/epja/i2018-12541-3
Ronchen, D., Doring, M., and MeiBner, U. -G. Tue . "The impact of $K^{+}\Lambda$ photoproduction on the resonance spectrum". United States. https://doi.org/10.1140/epja/i2018-12541-3. https://www.osti.gov/servlets/purl/1462176.
@article{osti_1462176,
title = {The impact of $K^{+}\Lambda$ photoproduction on the resonance spectrum},
author = {Ronchen, D. and Doring, M. and MeiBner, U. -G.},
abstractNote = {The Julich-Bonn coupled-channel framework is extended to $K^+\Lambda$ photoproduction. The spectrum of nucleon and $\Delta$ resonances is extracted from simultaneous fits to several pion-induced reactions in addition to pion, eta and $K^+\Lambda$ photoproduction off the proton. More than 40,000 data points up to a center-of-mass energy of E$\sim$2.3 GeV including recently measured double-polarization observables are analyzed. The influence of the $\gamma p\to K^+\Lambda$ channel on the extracted resonance parameters and the appearance of states not seen in other channels is investigated. Furthermore, the Julich-Bonn model includes effective three-body channels and guarantees unitarity and analyticity, which is a prerequisite for a reliable determination of the resonance spectrum in terms of poles and residues.},
doi = {10.1140/epja/i2018-12541-3},
journal = {European Physical Journal. A},
number = 6,
volume = 54,
place = {United States},
year = {Tue Jun 26 00:00:00 EDT 2018},
month = {Tue Jun 26 00:00:00 EDT 2018}
}

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Cited by: 33 works
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