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Analysis of the Axial Anomaly on the Lattice with O(a)-improved Wilson Action
D. Guadagnoli, S. Simula
Flavor singlet and non-singlet axial Ward identities are investigated using the Wilson formulation of lattice QCD with Clover O(a)-improvement, which breaks explicitly chiral symme…
Longitudinal structure function of the proton at low momentum transfer and extended constituents
Silvano Simula
Recent data on the (inelastic) Nachtmann moments of the unpolarized proton structure function F2p, obtained at low momentum transfer with the CLAS detector at Jefferson Lab, have b…
New extraction of alpha_s(MZ) from proton DIS data
S. Simula, M. Osipenko
An exploratory study for a new determination of the strong coupling constant alpha_s(MZ) from existing world data on the proton structure function F2p in the Q**2-range from ~ 5 to…
The proton structure function F2 in the resonance region
M. Osipenko, G. Ricco, M. Taiuti +5
Unique measurement of the proton structure function F2 in a wide two-dimensional region of x and Q**2 has been reported. The accessible kinematics covers entire resonance region up…
Possible evidence of extended objects inside the proton
R. Petronzio, S. Simula, G. Ricco
Recent experimental determinations of the Nachtmann moments of the inelastic structure function of the proton F2p(x, Q**2), obtained at Jefferson Lab, are analyzed for values of th…
A Kinematically Complete Measurement of the Proton Structure Function F2 in the Resonance Region and Evaluation of Its Moments
M. Osipenko, G. Ricco, M. Taiuti +3
We measured the inclusive electron-proton cross section in the nucleon resonance region (W < 2.5 GeV) at momentum transfers Q**2 below 4.5 (GeV/c)**2 with the CLAS detector. The la…