Direct observation of a rho decay of the D13(1520) baryon resonance.

Authors :: Langgärtner W
Ahrens J
Beck R
Hejny V
Kotulla M
Krusche B
Kuhr V
Leukel R
McGregor JD
Messchendorp JG
Metag V
Novotny R
Olmos de Léon V
Owens RO
Rambo F
Schadmand S
Schmidt A
Siodlaczek U
Ströher H
Weiss J
Wissmann F
Wolf M
Source :: Physical review letters [Phys Rev Lett] 2001 Jul 30; Vol. 87 (5), pp. 052001. Date of Electronic Publication: 2001 Jul 11.
Publication Year :: 2001
Abstract: The reaction gammap-->pi(+)pi(0)n has been measured at MAMI for photon energies up to 820 MeV. Invariant mass spectra of the particles in the final state (pi(+)n), (pi(0)n), (pi(+)pi(0)) have been determined for several bins of incident photon energy. Differences in pi(+)pi(0) and simultaneously measured pi(0)pi(0) invariant mass distributions are assigned to a rho branch of the D13(1520) nucleon resonance.