Published October 2003 | Version v1
Journal article Metadata-only

Helicity dependence of the γN interaction and the GDH sum rule

Creators

  • 1. INFN-Sezione di Pavia, via Bassi 6, Pavia (Italy)

Description

First measurements of pion photoproduction using circularly polarized photons on longitudinally polarized protons were carried out at MAMI (Mainz) in the energy range Eγ = 200-800 MeV. Results of the helicity dependence of the total inclusive photoabsorption cross-section and of the pion photoproduction channels will be presented. These data provide new input for multipole analyses and determine the main contribution to the Gerasimov-Drell-Hearn integral and the forward spin polarizability γ0. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epja/i2002-10244-0

Additional details

Identifiers

DOI
10.1140/epja/i2002-10244-0;

Publishing Information

Journal Title
European Physical Journal. A
Journal Volume
18
Journal Issue
2-3
Journal Page Range
p. 401-404
ISSN
1434-6001

Conference

Title
International conference on quark nuclear physics (QNP)
Dates
10-14 Jun 2002
Place
Juelich (Germany)

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
35022971
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference, Numerical Data
Descriptors DEI
EXCITATION FUNCTIONS; EXCLUSIVE INTERACTIONS; EXPERIMENTAL DATA; INCLUSIVE INTERACTIONS; INTEGRAL CROSS SECTIONS; MEV RANGE 100-1000; NEUTRONS; PAIR PRODUCTION; PHOTON-PROTON INTERACTIONS; PHOTOPRODUCTION; PIONS MINUS; PIONS NEUTRAL; PIONS PLUS; POLARIZED BEAMS; POLARIZED TARGETS; PROTONS; SPIN ORIENTATION; SUM RULES
Descriptors DEC
BARYONS; BASIC INTERACTIONS; BEAMS; BOSONS; CROSS SECTIONS; DATA; DIFFERENTIAL CROSS SECTIONS; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; EQUATIONS; FERMIONS; FUNCTIONS; HADRONS; INFORMATION; INTERACTIONS; MESONS; MEV RANGE; NUCLEONS; NUMERICAL DATA; ORIENTATION; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PHOTON-BARYON INTERACTIONS; PHOTON-HADRON INTERACTIONS; PHOTON-NUCLEON INTERACTIONS; PIONS; PSEUDOSCALAR MESONS; TARGETS