Journal
EUROPEAN PHYSICAL JOURNAL A
Volume 54, Issue 6, Pages -Publisher
SPRINGER
DOI: 10.1140/epja/i2018-12541-3
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Funding
- DFG [CRC 110, TRR110]
- NSFC [CRC 110, 11621131001]
- VolkswagenStiftung [93562]
- National Science Foundation [PHY-1452055, 1415459]
- U.S. Department of Energy, Office of Science, Office of Nuclear Physics [DE-AC05-06OR23177, DE-SC0016582]
- CAS President's International Fellowship Initiative (PIFI) [2018DM0034]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1415459] Funding Source: National Science Foundation
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The Julich-Bonn coupled-channel framework is extended to K+ Lambda photoproduction. The spectrum of nucleon and. 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 40000 data points up to a center-of-mass energy of E similar to 2.3 GeV including recently measured double-polarization observables are analyzed. The influence of the gamma p -> K+ Lambda channel on the extracted resonance parameters an 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.
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