Journal Article

FZJ-2018-07611

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The impact of $K^{+}\Lambda$K + Λ photoproduction on the resonance spectrum

Rönchen, D. (Corresponding author) ; Döring, M. ; Meissner, U.-G.FZJ*

2018
Springer Heidelberg

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Please use a persistent id in citations: http://hdl.handle.net/2128/21219  doi:10.1140/epja/i2018-12541-3

Abstract: The Jülich-Bonn coupled-channel framework is extended to K+Λ photoproduction. The spectrum of nucleon and Δ resonances is extracted from simultaneous fits to several pion-induced reactions in addition to pion, eta and K+Λ photoproduction off the proton. More than 40000 data points up to a center-of-mass energy of E∼2.3 GeV including recently measured double-polarization observables are analyzed. The influence of the γp→K+Λ channel on the extracted resonance parameters and the appearance of states not seen in other channels is investigated. The Jülich-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.

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Contributing Institute(s):

1. Theorie der Starken Wechselwirkung (IAS-4)
2. Theorie der starken Wechselwirkung (IKP-3)
3. JARA - HPC (JARA-HPC)

Research Program(s):

1. 511 - Computational Science and Mathematical Methods (POF3-511) (POF3-511)
2. DFG project 196253076 - TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik (196253076) (196253076)
3. Unified analysis of photon- and pion-induced reactions in the hadron exchange picture (jikp07_20110501) (jikp07_20110501)

Appears in the scientific report 2018

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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