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Phys Rev Lett. 2007 Sep 28;99(13):132301. doi: 10.1103/PhysRevLett.99.132301. Epub 2007 Sep 26.

Recoil polarization and beam-recoil double polarization measurement of eta electroproduction on the proton in the region of the S11(1535) resonance.

Physical review letters

H Merkel, P Achenbach, C Ayerbe Gayoso, J C Bernauer, R Böhm, D Bosnar, B Cheymol, M O Distler, L Doria, H Fonvieille, J Friedrich, P Janssens, M Makek, U Müller, L Nungesser, J Pochodzalla, M Potokar, S Sánchez Majos, B S Schlimme, S Sirca, L Tiator, Th Walcher, M Weinriefer,

Affiliations

  1. Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany. [email protected]

PMID: 17930579 DOI: 10.1103/PhysRevLett.99.132301

Abstract

The beam-recoil double polarization P(x')(h) and P(z')(h) and the recoil polarization P(y') were measured for the first time for the p(e,e'p)eta reaction at a four-momentum transfer of Q(2) = 0.1 GeV(2)/c(2) and a center of mass production angle of theta = 120 degrees at the Mainz Microtron MAMI-C. With a center of mass energy range of 1500 MeV

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