First measurement of the Gerasimov-Drell-Hearn integral for H-1 from 200 to 800 MeV
Physical review letters. Bd. 87. H. 2. College Park, MD: APS 2001 022003
Erscheinungsjahr: 2001
ISBN/ISSN: 1079-7114 ; 0031-9007
Publikationstyp: Zeitschriftenaufsatz
Sprache: Englisch
Doi/URN: 10.1103/PhysRevLett.87.022003
| Geprüft: | Bibliothek |
Inhaltszusammenfassung
A direct measurement of the helicity dependence of the total photoabsorption cross section an the proton was carried out at MAMI (Mainz) in the energy range 200 detection system, a circularly polarized. tagged photon beam, and a frozen spin target. The contributions to the Gerasimov-Drell-Hearn sum rule and to the forward spin polarizability gamma (0) determined from the data are 226 +/- 5(stat) +/- 12(syst) mub and -187 +/- 8(stat) +/- 10(syst) x 10(-6) fm(4), respectively, for 200
Autoren
Klassifikation
DDC Sachgruppe:
Physik
