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Helicity dependence of the gamma p -> N pi channels and multipole analysis in the Delta region

Författare:
  • J Ahrens
  • S Altieri
  • JRM Annand
  • G Anton
  • HJ Arends
  • K Aulenbacher
  • R Beck
  • C Bradtke
  • A Braghieri
  • N Degrande
  • N d'Hose
  • D Drechsel
  • H Dutz
  • S Goertz
  • P Grabmayr
  • Kurt Hansen
  • J Harmsen
  • D von Harrach
  • S Hasegawa
  • T Hasegawa
  • E Heid
  • K Helbing
  • H Holvoet
  • L Van Hoorebeke
  • N Horikawa
  • T Iwata
  • O Jahn
  • P Jennewein
  • T Kageya
  • B Kiel
  • F Klein
  • R Kondratiev
  • K Kossert
  • J Krimmer
  • M Lang
  • B Lannoy
  • R Leukel
  • V Lisin
  • T Matsuda
  • JC McGeorge
  • A Meier
  • D Menze
  • W Meyer
  • T Michel
  • J Naumann
  • A Panzeri
  • P Pedroni
  • T Pinelli
  • I Preobrajenski
  • E Radtke
  • E Reichert
  • G Reicherz
  • C Rohlof
  • G Rosner
  • D Ryckbosch
  • M Sauer
  • B Schoch
  • M Schumacher
  • B Seitz
  • T Speckner
  • N Takabayashi
  • G Tamas
  • A Thomas
  • L Tiator
  • R van de Vyver
  • A Wakai
  • W Weihofen
  • F Wissmann
  • F Zapadtka
  • G Zeitler
Publiceringsår: 2004
Språk: Engelska
Sidor: 323-333
Publikation/Tidskrift/Serie: European Physical Journal
Volym: 21
Nummer: 2
Dokumenttyp: Artikel
Förlag: Springer

Sammanfattning

A high-quality double-polarization data set for the helicity dependence of the total and differential cross-sections for both gammap --> Npi channels in the Delta region has been obtained in the framework of the GDH experiment. The experiment, performed at the Mainz microtron MAMI, used a 4pi detection system, a circularly polarized photon beam, and a longitudinally polarized frozen-spin target. These data are included in the database to perform a multipole analysis to determine the properties of the Delta(1232)-resonance. For the resonant Delta(1232) multipoles we find a very good agreement with previous analyses, while the nonresonant ones show significant deviations.

Disputation

Nyckelord

  • Physics and Astronomy

Övriga

Published
Yes
  • ISSN: 1434-6001

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