Helicity dependence of γp → N π below 450 MeV and contribution to the gerasimov-drell-hearn sum rule

GDH Collaboration, A2 Collaboration

Research output: Contribution to journalArticlepeer-review

99 Citations (Scopus)

Abstract

The helicity dependence of the single pion photoproduction on the proton has been measured in the energy range from 200 to 450 MeV for the first time. The experiment, performed at the Mainz microtron MAMI, used a 4π-detector system, a circularly polarized, tagged photon beam, and a frozen-spin target. The data obtained provide new information for multipole analyses of pion photoproduction and determine the main contributions to the Gerasimov-Drell-Hearn sum rule and the forward spin polarizability γ0.

Original languageEnglish
Pages (from-to)5950-5954
Number of pages5
JournalPhysical Review Letters
Volume84
Issue number26
DOIs
Publication statusPublished - 2000
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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