Determination of the E2/M1 ratio in the (gamma)N→Delta(1232) transition from a simultaneous measurement of p((gamma)over-right-arrow,p)pi(0) and P((gamma)over-right-arrow, pi(+))n
Physical review : C. Bd. 61. H. 3. Woodbury, NY: Inst. 2000 035204
Erscheinungsjahr: 2000
ISBN/ISSN: 0556-2813 ; 1089-490X
Publikationstyp: Zeitschriftenaufsatz
Sprache: Englisch
Doi/URN: 10.1103/PhysRevC.61.035204
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Inhaltszusammenfassung
Tagged linearly polarized photons have been used at the Mainz Microtron (MAMI) for simultaneous measurements of the p(,p)pi(0). and p(,pi(+))n reaction channels to study the gamma N-->Delta(1232) transition. The energy dependence of the magnetic dipole M-1+(3/2) and electric quadrupole E-1+(3/2) amplitudes have been extracted from these data in the photon energy range from 270 to 420 MeV. The E2/M1 ratio for the gamma N-->Delta(1232) transition has been determined to be -(2.5+/-0.1(stat)+/-0....Tagged linearly polarized photons have been used at the Mainz Microtron (MAMI) for simultaneous measurements of the p(,p)pi(0). and p(,pi(+))n reaction channels to study the gamma N-->Delta(1232) transition. The energy dependence of the magnetic dipole M-1+(3/2) and electric quadrupole E-1+(3/2) amplitudes have been extracted from these data in the photon energy range from 270 to 420 MeV. The E2/M1 ratio for the gamma N-->Delta(1232) transition has been determined to be -(2.5+/-0.1(stat)+/-0.2(sys))% at the resonance position (delta(33)=90 degrees).» weiterlesen» einklappen
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DFG Fachgebiet:
Teilchen, Kerne und Felder
DDC Sachgruppe:
Physik
