Author: F. FosterPublisher:
ISBN:
Category :
Languages : en
Pages : 55
Book Description
Electroproduction of Nucleon Resonances
Author: F. FosterOn the Theory of Electroproduction of Nucleon Resonances
Author: Philip Lentner PritchettPublisher:
ISBN:
Category :
Languages : en
Pages : 426
Book Description
A Relativistic Model for Electroproduction of Nucleon Resonances
Author: P. A. ZuckerElectroexcitation of Nucleon Resonances
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Recent electroproduction results in the domain of s-channel nucleon resonance excitation are presented, and preliminary data in the search for missing states will be discussed. I also address a new avenue to pursue N* physics using exclusive deeply virtual Compton scattering, recently measured for the first time at JLab and DESY.
Electroexcitation of Nucleon Resonances from CLAS Data on Single Pion Electroproduction
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
We present results on the electroexcitation of the low mass resonances Delta(1232)P33, N(1440)P11, N(1520)D13, and N(1535)S11 in a wide range of Q2. The results were obtained in the comprehensive analysis of JLab-CLAS data on differential cross sections, longitudinally polarized beam asymmetries, and longitudinal target and beam-target asymmetries for pion electroproduction off the proton. The data were analysed using two conceptually different approaches, fixed-t dispersion relations and a unitary isobar model, allowing us to draw conclusions on the model sensitivity of the obtained electrocoupling amplitudes. The amplitudes for the Delta(1232)P33} show the importance of a meson-cloud contribution to quantitatively explain the magnetic dipole strength, as well as the electric and scalar quadrupole transitions. They do not show any tendency of approaching the pQCD regime for Q26 GeV2. For the Roper resonance, N(1440)P11, the data provide strong evidence for this state as a predominantly radial excitation of a 3-quark ground state. Measured in pion electroproduction, the transverse helicity amplitude for the N(1535)S11 allowed us to obtain the branching ratios of this state to the piN and etaN channels via comparison to the results extracted from eta electroproduction. The extensive CLAS data also enabled the extraction of the gamma*p - N(1520)D13 and N(1535)S11 longitudinal helicity amplitudes with good precision.
Helicity and isospin asymmetries in the electroproduction of nucleon resonances
Author: Mathias WarnsElectroproduction of Π° Mesons in the Region of the First Pion - Nucleon Resonance
Author: R. D. HellingsStudies of Nucleon Resonance Structure in Exclusive Meson Electroproduction
Author: Electroproduction of Positive Pions in the Region of the First Nucleon Resonance
Author: Richard S. LawsonNSTAR 2001
Author: D. DrechselPublisher: World Scientific
ISBN: 9789812810878
Category : Science
Languages : en
Pages : 536
Book Description
Positive pion photoproduction and compton scattering at GRAAL / V. Kouznetsov for the GRAAL collaboration -- Virtual compton scattering and pion electroproduction in the nucleon resonance region / G. Laveissiere for the Jefferson Lab Hall A collaboration -- Single spin beam asymmetry measurements from single [symbol] electroproduction in the [symbol](1232) resonance region / K. Joo -- The new crystal ball experimental program / W. J. Briscoe -- Observation of [symbol]-mesic nuclei in photoreactions: Results and perspectives / G. A. Sokol, A. I. L'vov, L. N. Pavlyuchenko -- Baryon spectroscopy: Experiments at PNPI / I. Lopatin -- Measurement of the cross section asymmetry in deuteron photodisintegration by linearly polarized photons in the energy range E[symbol] = 0.8 - 1.6 GeV / A. Sirunian ... [et al.] -- Nucleon resonances in lattice QCD / F. X. Lee -- Lattice study of nucleon properties with domain wall fermions / S. Sasaki -- Quark-hadron duality: Resonances and the onset of scaling / W. Melnitchouk -- Generalized GDH sum rule and spin-dependent electroproduction in the resonance region / J. P. Chen for the Jefferson Lab E94-010 collaboration -- Double polarization measurements using the CLAS at JLab / R. C. Minehart for the CLAS collaboration -- The helicity dependent excitation spectrum of the nucleon and the GDH sum rule / A. Thomas for the GDH- and A2-collaborations -- Static magnetic moment of the [symbol](1232) / M. Kotulla for the TAPS and AS collaborations -- Meson photoproduction at GRAAL / A. D'Angelo ... [et al.] -- Maximum likelihood techniques for PWA of 2-pion photoproduction / J. P. Cummings -- [symbol] electroproduction with CLAS / J. A. Mueller -- Kaon electroproduction and [symbol] polarization observables measured with CLAS / B. Raue for the CLAS collaboration -- Recent results on kaon photoproduction at SAPHIR in the reactions [symbols] and [symbols] / K.-H. Glander for the SAPHIR collaboration -- Vector meson decay of baryon resonances / U. Mosel, M. Post -- Higher and missing resonances in [symbol] photoproduction / Y. Oh, A. I. Titov, T.-S. H. Lee -- Photoproduction of baryon resonances, first data from the CB-ELSA experiment / U. Thoma for the CB-ELSA collaboration -- Laser-electron photon project at SPring-8 / T. Nakano -- The baryon resonance program at BES / B.S. Zou for the BES collaboration -- Flavor symmetry studies with new hyperon data from the crystal ball / B. M. K. Nefkens ... [et al.] for the Crystal Ball collaboration -- Higher resonances and the example of two pion electroproduction with the CLAS detector at Jefferson Lab / M. Ripani for the CLAS collaboration -- Nucleon resonances and mesons in nuclei / V. Metag -- Excitation of nucleon resonances / V. D. Burkert -- Summary of the partial wave analysis group of BRAG: Multipole analysis of a benchmark data set for pion photoproduction / R. A. Arndt ... [et al.].