https://doi.org/10.1140/epja/i2005-10120-5
Original Article
Photoproduction of baryons decaying into Nπ and Nη
1
Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
2
Nuclear Physics Institute, Gatchina, Russia
3
Physikalisches Institut, Universität Gießen, Germany
* e-mail: klempt@hiskp.uni-bonn.de
Received:
13
May
2005
Accepted:
11
July
2005
Published online:
7
October
2005
A combined analysis of photoproduction data on γp↦ πN, ηN was performed including the data on KΛ and KΣ. The data are interpreted in an isobar model with s-channel baryon resonances and π, ρ (ω), K, and K * exchange in the t-channel. Three baryon resonances have a substantial coupling to ηN, the well-known N(1535)S 11, N(1720)P 13, and N(2070)D 15. The inclusion of data with open strangeness reveals evidence for further new resonances, N(1840)P 11, N(1875)D 13 and, with weaker evidence, for N(2170)D 13.
PACS: 11.80.Et Partial-wave analysis – / 13.30.-a Decays of baryons – / 13.60.Le Meson production – / 14.20.Gk Baryon resonances with S = 0 –
© Società Italiana di Fisica and Springer-Verlag, 2005
