6533b85bfe1ef96bd12bb314

RESEARCH PRODUCT

Virtual compton scattering under π0 threshold at Q2=0.33 GeV2. Preliminary results

P. BartschJ.e. DucretI. EwaldCh. Hyde-wrightP. VerninG. QuemenerR. GeigesR. Van De VyverG. TamasMarc VanderhaeghenA. WagnerP. MerleN. D'hoseO. RavelR. EdelhoffP.y. BertinJ. Van De WieleM. KahrauVincent BretonJ.m. FriedrichJ. MartinoJ. RocheH. KramerTh. GoussetE. A. J. M. OffermannW.u. BoeglinD. LhuillierG. RosnerT. CapranoA. LiesenfeldP.a.m. GuichonP. SauerS. DerberN. DegrandeM. O. DistlerR. BöhmK. MerleH. HolvoetP. JenneweinV. KundeY. RoblinJ. BerthotG. De MeyerC. MarchandS. KerhoasD. MarchandJ. Y. MougeyB. LannoyTh. PospischilH. SchmiedenJ.m. FriedrichMichael TytgatHarald MerkelH. FonvieilleTh. WalcherL. Van HoorebekeS. SchardtDirk RyckboschK. W. KrygierR. NeuhausenS. WolfM. Korn

subject

PhysicsMassless particleNuclear reactionElastic scatteringNuclear physicsNuclear and High Energy PhysicsPhotonScatteringMomentum transferCompton scatteringVirtual particleAtomic physicsNuclear Experiment

description

We have measured the absolute unpolarized cross sections for photon electro-production off the proton ep → epγ with the Three-Spectrometer-Setup at MAMI at a momentum transfer q=600 MeV/c and a virtual photon polarization ɛ=0.62. The momentum q ′ of the outgoing real photon range from 33 to 111 MeV/c. We extracted two combinations of the recently introduced generalized polarizabilities [1,2].

yearjournalcountryeditionlanguage
1999-07-01Nuclear Physics A
https://doi.org/10.1016/s0375-9474(00)88498-5