6533b82ffe1ef96bd1294648

RESEARCH PRODUCT

Measurement of Helicity-Dependent Photoabsorption Cross Sections on the Neutron from 815 to 1825 MeV

Martin SchumacherW. V. DrachenfelsG. ZeitlerE. RadtkeSaverio AltieriE. HeidN. D'hoseH. HolvoetP. JenneweinAnthony W. ThomasL. Van HoorebekeH.-j. ArendsH. DutzKurt HansenR. LeukelSt. GoertzJ. NaumannI. PreobrajenskiF. ZapadtkaM. LangV. LisinWolfgang HillertM. GodoA. BraghieriM. SauerG. TamasW. MeyerW. WeihofenG. ReicherzR. Van De VyverP. GrabmayrB. LannoyA. BockC. BradtkeTakahiro IwataP. PedroniB. SchochD. MenzeGisela AntonJ. AhrensJ. KrimmerR. KondratievJ. HarmsenR. BeckA. PanzeriS. HasegawaNaoaki HorikawaT. SpecknerCh. RohlofK. HelbingJrm AnnandT. RostomyanT. PinelliThilo MichelB. KielFrank FrommbergerFrank Klein

subject

PhysicsRange (particle radiation)Photon010308 nuclear & particles physicsNuclear TheoryGeneral Physics and AstronomyPhoton energy7. Clean energy01 natural sciencesHelicityNuclear physicsDeuterium0103 physical sciencesNeutronAtomic physicsNuclear Experiment010306 general physicsMultipole expansionCircular polarization

description

Helicity-dependent total photoabsorption cross sections on the deuteron have been measured for the first time at ELSA (Bonn) in the photon energy range from 815 to 1825 MeV. Circularly polarized tagged photons impinging on a longitudinally polarized LiD target have been used together with a highly efficient 4pi detector system. The data around 1 GeV are not compatible with predictions from existing multipole analyses. From the measured energy range an experimental contribution to the GDH integral on the neutron of [33.9 +/- 5.5(stat) +/- 4.5(syst)] microb is extracted.

yearjournalcountryeditionlanguage
2005-04-28Physical Review Letters
https://doi.org/10.1103/physrevlett.94.162001