Add to ORKGThe proton form factors are reduced to vacuum correlators of 4 quark fields by assuming independent constituent quarks. The axial singlet quark and gluonic form factors are calculated in the instanton liquid model. A discussion of gauge(in)dependence is given
Motivated by measurements of the flavor singlet axial coupling constant of the nucleon in polarized ...
AbstractWe investigate the spin structure of the pion within the framework of the nonlocal chiral qu...
We combine heavy-quark renormalization group arguments with our understanding of the nucleon’s wave ...
We report the first non-perturbative calculation of proton electro-magnetic form-factors in the Rand...
Comments on the recent lattice QCD calculations of the flavor-singlet axial coupling constant g_A^0 ...
We study the gluon polarization contribution at the quark model renormalization scale to the proton ...
Within an instanton based model of QCD the authors address the important question of how much of the...
The proton spin puzzle inspired by the EMC experiment and its present statusare closely examined. Re...
We obtain a general rule that the O(1/log m_h) term due to the current -3\bar{g}^2_f(m_h)/{2\pi^2(33...
We study the gluon polarization contribution at the quark model renormalization scale to the proton ...
It is shown that a consistent treatment of the axial anomaly leads to an explicit cancellation betwe...
Instantons are the natural mechanism in non-perturbative QCD to remove helicity from valence quarks ...
AbstractBased on both the constituent quark picture and the instanton model for QCD vacuum, we calcu...
We estimate the twist-4 spin-1 nucleon matrix element f_2 in an instanton-based description of the Q...
Contents: 1. Introduction; 2. The First Moment Sum Rule for $g_1^p$; 3. The Parton Model and the `Pr...
Motivated by measurements of the flavor singlet axial coupling constant of the nucleon in polarized ...
AbstractWe investigate the spin structure of the pion within the framework of the nonlocal chiral qu...
We combine heavy-quark renormalization group arguments with our understanding of the nucleon’s wave ...
We report the first non-perturbative calculation of proton electro-magnetic form-factors in the Rand...
Comments on the recent lattice QCD calculations of the flavor-singlet axial coupling constant g_A^0 ...
We study the gluon polarization contribution at the quark model renormalization scale to the proton ...
Within an instanton based model of QCD the authors address the important question of how much of the...
The proton spin puzzle inspired by the EMC experiment and its present statusare closely examined. Re...
We obtain a general rule that the O(1/log m_h) term due to the current -3\bar{g}^2_f(m_h)/{2\pi^2(33...
We study the gluon polarization contribution at the quark model renormalization scale to the proton ...
It is shown that a consistent treatment of the axial anomaly leads to an explicit cancellation betwe...
Instantons are the natural mechanism in non-perturbative QCD to remove helicity from valence quarks ...
AbstractBased on both the constituent quark picture and the instanton model for QCD vacuum, we calcu...
We estimate the twist-4 spin-1 nucleon matrix element f_2 in an instanton-based description of the Q...
Contents: 1. Introduction; 2. The First Moment Sum Rule for $g_1^p$; 3. The Parton Model and the `Pr...
Motivated by measurements of the flavor singlet axial coupling constant of the nucleon in polarized ...
AbstractWe investigate the spin structure of the pion within the framework of the nonlocal chiral qu...
We combine heavy-quark renormalization group arguments with our understanding of the nucleon’s wave ...