Evidence for a parity doublet Delta(1920)P33 and Delta(1940)D33 from gammap-->ppi;{0}eta.

Authors :: Horn I
Anisovich AV
Anton G
Bantes R
Bartholomy O
Beck R
Beloglazov Y
Bogendörfer R
Castelijns R
Crede V
Ehmanns A
Ernst J
Fabry I
Flemming H
Fösel A
Fuchs M
Funke C
Gothe R
Gridnev A
Gutz E
Höffgen S
Hössl J
Junkersfeld J
Kalinowsky H
Klein F
Klempt E
Koch H
Konrad M
Kopf B
Krusche B
Langheinrich J
Löhner H
Lopatin I
Lotz J
Matthäy H
Menze D
Messchendorp J
Metag V
Nikonov VA
Novinski D
Ostrick M
van Pee H
Sarantsev AV
Schmidt C
Schmieden H
Schoch B
Suft G
Sumachev V
Szczepanek T
Thoma U
Walther D
Weinheimer C
Source :: Physical review letters [Phys Rev Lett] 2008 Nov 14; Vol. 101 (20), pp. 202002. Date of Electronic Publication: 2008 Nov 12.
Publication Year :: 2008
Abstract: Evidence is reported for the existence of a parity doublet of Delta resonances with total angular momentum J=3/2 from photoproduction of the ppi;{0}eta final state. The two parity partners Delta(1920)P33 and Delta(1940)D33 make significant contributions to the reaction. Cascades of resonances into Delta(1232)eta, N(1535)pi, and Na0(980) are clearly observed.

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