433 citations · 3.1k across the 63 of their papers we have counts for
9 papers · 1 filter
The end of the nucleon-spin crisis
Bogdan Povh, Thomas Walcher
The small fraction of the quark polarization of the nucleon obtained in deep inelastic lepton scattering is a consequence of a wrong assumption on the flux of polarized virtual pho…
Long Range Structure of the Nucleon
Marc Vanderhaeghen, Thomas Walcher
The long range structure of the nucleon is discussed starting from the old model of a quark bag with a pion cloud (``cloudy bag'') carrying on to the more recent ideas of the parto…
Hadron structure at small momentum transfer
Thomas Walcher
Giving three examples, the form factors of the nucleon, the polarisability of the charged pion and the interference of the with the excitation of the…
Hadron structure at low Q^2
Dieter Drechsel, Thomas Walcher
This review deals with the structure of hadrons, strongly interacting many-body systems consisting of quarks and gluons. These systems have a size of about 1 fm, which shows up in…
Beam-helicity asymmetry in photon and pion electroproduction in the Delta(1232) resonance region at Q^2= 0.35 (GeV/c)^2
A1 Collaboration, I. K. Bensafa, P. Achenbach +40
The beam-helicity asymmetry has been measured simultaneously for the reactions (e p \to e p γ) and (e p \to e p π^0) in the resonance region at 0.35 (GeV/c). T…
A Coherent Interpretation of the Form Factors of the Nucleon in Terms of a Pion Cloud and Constituent Quarks
J. Friedrich, Th. Walcher
The recent unbiased measurements of the electric form factor of the neutron suggest that its shape may be interpreted as a smooth broad distribution with a bump at Q^2 \approx 0.3(…