Strong Evidence for Nucleon Resonances near 1900 MeV (CROSBI ID 241789)
Prilog u časopisu | Pismo (znanstveno) | međunarodna recenzija
Podaci o odgovornosti
Anisovich, A. V. ; Burkert, V. ; Hadžimehmedović, M. ; Ireland, D. G. ; Klempt, E. ; Nikonov, V. A. ; Omerović, R. ; Osmanović, H. ; Sarantsev, A. V. ; Stahov, J. ; Švarc, A. ; Thoma, U.
engleski
Strong Evidence for Nucleon Resonances near 1900 MeV
Data on the reaction γp → KΛ from the CLAS experiments are used to derive the leading multipoles, E0+, M1−, E1+, and M1+, from the production threshold to 2180 MeV in 24 slices of the invariant mass. The four multipoles are determined without any constraints. The multipoles are fitted using a multichannel L + P model that allows us to search for singularities and to extract the positions of poles on the complex energy plane in an almost model-independent method. The multipoles are also used as additional constraints in an energy-dependent analysis of a large body of pion and photoinduced reactions within the Bonn-Gatchina partial wave analysis. The study confirms the existence of poles due to nucleon resonances with spin parity JP = 1/2−, 1/2+, and 3/2' in the region at about 1.9 GeV.
strange particle photoproduction, N* resonances
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o izdanju
119
2017.
062004-1-062004-6
objavljeno
0031-9007
10.1103/PhysRevLett.119.062004