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N∗ resonances from KΛ amplitudes in sliced bins in energy (CROSBI ID 246651)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Anisovich, A.V. ; Burkert, V. ; Hadžimehmedović, M. ; Ireland, D.G. ; Klempt, E. ; Nikonov, V.A. ; Omerović, R. ; Sarantsev, A.V. ; Stahov, J. ; Švarc, A. et al. N∗ resonances from KΛ amplitudes in sliced bins in energy // European physical journal A : hadrons and nuclei, 53 (2017), 12; 242, 18. doi: 10.1140/epja/i2017-12443-x

Podaci o odgovornosti

Anisovich, A.V. ; Burkert, V. ; Hadžimehmedović, M. ; Ireland, D.G. ; Klempt, E. ; Nikonov, V.A. ; Omerović, R. ; Sarantsev, A.V. ; Stahov, J. ; Švarc, A. ; and Thoma, U.

engleski

N∗ resonances from KΛ amplitudes in sliced bins in energy

The two reactions γp→K+Λ and π−p→K0Λ are analyzed to determine the leading photoproduction multipoles and the pion-induced partial wave amplitudes in slices of the invariant mass. The multipoles and the partial- wave amplitudes are simultaneously fitted in a multichannel Laurent+Pietarinen model (L+P model), which determines the poles in the complex energy plane on the second Riemann sheet close to the physical axes. The results from the L+P fit are compared with the results of an energy-dependent fit based on the Bonn- Gatchina (BnGa) approach. The study confirms the existence of several poles due to nucleon resonances in the region at about 1.9 GeV with quantum numbers JP=1/2+, 3/2+, 1/2−, 3/2−, 5/2−JP=1/2+, 3/2+, 1/2−, 3/ 2−, 5/2− .

baryon resonances, lambda photo-production

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

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nije evidentirano

Podaci o izdanju

53 (12)

2017.

242

18

objavljeno

1434-6001

1434-601X

10.1140/epja/i2017-12443-x

Povezanost rada

Fizika

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