Measurement of the Generalized Polarizabilities of the Proton in Virtual Compton Scattering at Q2=0.92 and 1.76 Gev2: II. Dispersion Relation Analysis

Journal Article · Mon Dec 01 00:00:00 EST 2003 · Physical Review Letters

OSTI ID:836876

Laveissiere, Geraud; Todor, Luminita; Degrande, Natalie; Jaminion, S; Jutier, Christophe; Salvo, Rachele Di; Hoorebeke, L Van

Virtual Compton Scattering is studied at the Thomas Jefferson National Accelerator Facility in the energy domain below pion threshold and in the Delta(1232) resonance region. The data analysis is based on the Dispersion Relation (DR) approach. The electric and magnetic Generalized Polarizabilities (GPs) of the proton and the structure functions Pll-Ptt/epsilon and Plt are determined at four-momentum transfer squared Q2=0.92 and 1.76 GeV2. The DR analysis is consistent with the low-energy expansion analysis. The world data set indicates that neither the electric nor magnetic GP follows a simple dipole form.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE; USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 836876
• Report Number(s): JLAB-PHY-03-226; DOE/ER/40150-3151; hep-ph/0312294; TRN: US0500827
• Journal Information: Physical Review Letters, Other Information: Submitted to Physical Review Letters; PBD: 1 Dec 2003
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
CEBAF ACCELERATOR
COMPTON EFFECT
DATA ANALYSIS
DIPOLES
DISPERSION RELATIONS
GLOBAL POSITIONING SYSTEM
PIONS
PROTONS
RESONANCE
STRUCTURE FUNCTIONS