Measurement of the beam helicity asymmetry in the p(e_pol), e' p)pi0 reaction at the energy of delta(1232) resonance (CROSBI ID 100859)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Bartsch, P. ; Baumann, D. ; Bermuth, J. ; Bohm, R. ; Bohinc, K. ; Bosnar, Damir ; Ding, M. ; Distler, M. ; Drechsel, D. ; Elsner, D. ; Ewald, I. ; Friedrich, J. ; Friedrich, J.M. ; Grozinger, S. ; Hedicke, S. ; Jennewein, P. ; Kahrau, M. ; Kamalov, S.S. ; Klein, F. ; Krygier, K.W. ; Liesenfeld, A. ; Merkel, H. ; Merle, P. ; Muller, U. ; Neuhausen, R. ; Pospischil, T. ; Potokar, M. ; Rosner, G. ; Schmieden, H. ; Seimetz, M. ; Sule, A. ; Tiator, L. ; Wagner, A. ; Walcher, T. ; Weis M.
engleski
Measurement of the beam helicity asymmetry in the p(e_pol), e' p)pi0 reaction at the energy of delta(1232) resonance
In a p(e_pol, e'p)pi_0 out-of-plane coincidence experiment at the 3-spectrometer setup of the Mainz Microtron MAMI, the beam-helicity asymmetry has been precisely measured around the energy of the Delta(1232) resonance and Q^2 = 0.2 (GeV/c)^2. The results are in disagreement with three up-to-date model calculations. This is interpreted as lack of understanding of the non-resonant background, which in dynamical models is related to the pion cloud.
Beam-helicity asymmetry; Delta particle; hadron models
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
