6533b824fe1ef96bd127fec6

RESEARCH PRODUCT

Measurement of GEp/GMp via polarization transfer at Q2 = 0.4 GeV /c2

J. SannerD. BaumannG. RosnerJustin I. McintyreS. MalovF. KleinI. EwaldTh. PospischilS. HedickeM. WeisD. ElsnerJ. LacR. NeuhausenA. SüleJ.m. FriedrichM. DingM. O. DistlerDaniela RoheP. MerleA. WagnerSimon ŠIrcaR. BöhmS. DerberM. KahrauP. JenneweinKlemen BohincA. LiesenfeldMichael SeimetzRonald RansomeM. PotokarIngo SickTh. WalcherO. SträhleU. MüllerK. W. KrygierP. BartschS. GrözingerJ. JourdanH. SchmiedenJ.m. FriedrichHarald Merkel

subject

Nuclear physicsElastic scatteringPhysicsNuclear and High Energy PhysicsHadronNuclear fusionElectronAtomic physicsPolarization (waves)Microtron

description

The polarization transfer from longitudinally polarized electrons to protons in the elastic scattering p( e, e' p) has been measured around Q2 = 0.4 (GeV/c)2 with the three-spectrometer facility at the Mainz microtron MAMI. From this polarization transfer the ratio G Ep/(G Mp/μp) has been determined. The ratio is found to be slightly less than unity in agreement with recent results from other laboratories and from the Rosenbluth separation of cross-sections measured with unpolarized electrons.

https://doi.org/10.1007/s100500170046