TY  - JOUR
AU  - Rönchen, D.
AU  - Döring, M.
AU  - Meissner, Ulf-G.
TI  - The impact of $K^{+}\Lambda$K + Λ photoproduction on the resonance spectrum
JO  - The European physical journal / A
VL  - 54
IS  - 6
SN  - 0939-7922
CY  - Heidelberg
PB  - Springer
M1  - FZJ-2018-07611
SP  - 110
PY  - 2018
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000436366900003
DO  - DOI:10.1140/epja/i2018-12541-3
UR  - https://juser.fz-juelich.de/record/858771
ER  -