I. K. Lopatin

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  • I Horn, A V Anisovich, G Anton, R Bantes, O Bartholomy, R Beck +47 others
  • 2008
The reaction γp → pπ 0 η has been studied with the CBELSA detector at the tagged photon beam of the Bonn electron stretcher facility. The reaction shows contributions from ∆ + (1232)η, N (1535) + π 0 and pa0(980) as intermediate states. A partial wave analysis suggests that the reaction proceeds via formation of six for which pole positions and decay(More)
New species of the subfamilies Megalopodinae (Temnaspis humerosa sp. n.), Chrysomelinae [Chrysolina furialis sp. n., Ch. oxanae sp. n., Ch. pingchuana sp. n., Oreomelina (Oreomelina) obtusa sp. n., O. (Oreomelina) splendens sp. n. from Sichuan], and Galerucinae (Liroëtis obliquevirgata sp. n. from Sichuan, Hyphaenia lutescens sp. n. from Chongqing, H.(More)
(2008). Measurement of the invariant-mass spectrum for the two photons from the η→π0γγ decay. Measurement of the invariant-mass spectrum for the two photons from the η → π 0 γ γ decay New results on the rare, doubly radiative decay η → π 0 γ γ have been obtained from a revised analysis of the Crystal Ball experiment performed at the AGS. The analysis yields(More)
  • M Fuchs, A V Anisovich, G Anton, R Bantes, O Bartholomy, R Beck +42 others
  • 2009
Decays of baryon resonances in the second and the third resonance region into Nπ 0 π 0 are studied by photoproduction of two neutral pions off protons. Partial decay widths of N* and ∆* resonances decaying into ∆(1232)π, N(ππ) S , N(1440)P 11 π, and N(1520)D 13 π are determined in a partial wave analysis of this data, and data from other reactions. Several(More)
Photoproduction of π 0 mesons was studied with the Crystal-Barrel detector at ELSA for incident energies from 300 MeV to 3 GeV. Differential cross sections dσ/dΩ, dσ/dt, and the total cross section are presented. For Eγ < 3 GeV, the angular distributions agree well with the SAID parametrization. At photon energies above 1.5 GeV, a strong forward peaking(More)
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