Measurement of the recoil polarization in the p (\vec e, e' \vec p) pi^0 reaction at the Δ(1232) resonance

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dc.creatorPospischil, Th.
dc.creatorBartsch, P.
dc.creatorBaumann, D.
dc.creatorBermuth, J.
dc.creatorBoehm, R.
dc.creatorBohinc, K.
dc.creatorDerber, S.
dc.creatorDing, M.
dc.creatorDistler, M.
dc.creatorDrechsel, D.
dc.creatorElsner, D.
dc.creatorEwald, I.
dc.creatorFriedrich, J.
dc.creatorFriedrich, J. M.
dc.creatorGeiges, R.
dc.creatorHedicke, S.
dc.creatorJennewein, P.
dc.creatorKahrau, M.
dc.creatorKamalov, S. S.
dc.creatorKlein, F.
dc.creatorKrygier, K. W.
dc.creatorLac, J.
dc.creatorLiesenfeld, A.
dc.creatorMcIntyre, J.
dc.creatorMerkel, H.
dc.creatorMerle, P.
dc.creatorMueller, U.
dc.creatorNeuhausen, R.
dc.creatorPotokar, M.
dc.creatorRansome, R. D.
dc.creatorRohe, D.
dc.creatorRosner, G.
dc.creatorSchmieden, H.
dc.creatorSeimetz, M.
dc.creatorSirca, S.
dc.creatorSick, I.
dc.creatorSuele, A.
dc.creatorTiator, L.
dc.creatorWagner, A.
dc.creatorWalcher, Th
dc.creatorWarren, G. A.
dc.creatorWeis, M.
dc.date2000-10-31
dc.date.accessioned2026-07-07T11:32:28Z
dc.date.available2026-07-07T11:32:28Z
dc.descriptionThe recoil proton polarization has been measured in the p (\vec e,e'\vec p) pi^0 reaction in parallel kinematics around W = 1232 MeV, Q^2 = 0.121 (GeV/c)^2 and epsilon = 0.718 using the polarized c.w. electron beam of the Mainz Microtron. Due to the spin precession in a magnetic spectrometer, all three proton polarization components P_x/P_e = (-11.4 \pm 1.3 \pm 1.4) %, P_y = (-43.1 \pm 1.3 \pm 2.2) %, and P_z/P_e = (56.2 \pm 1.5 \pm 2.6) % could be measured simultaneously. The Coulomb quadrupole to magnetic dipole ratio CMR = (-6.4\pm 0.7_{stat}\pm 0.8_{syst}) % was determined from P_x in the framework of the Mainz Unitary Isobar Model. The consistency among the reduced polarizations and the extraction of the ratio of longitudinal to transverse response is discussed.
dc.description5 pages LaTeX, 1 table, 2 eps figures
dc.identifierhttps://arxiv.org/abs/nucl-ex/0010020
dc.identifierhttp://arxiv.org/abs/nucl-ex/0010020
dc.identifierPhys.Rev.Lett.86:2959-2962,2001
dc.identifierdoi:10.1103/PhysRevLett.86.2959
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/197605
dc.subjectNuclear Experiment
dc.titleMeasurement of the recoil polarization in the p (\vec e, e' \vec p) pi^0 reaction at the Δ(1232) resonance
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