10 papers · 1 filter
New Ideas for Transverse Spin Asymmetries in Inclusive Reactions
Jacques Soffer
We will give convincing arguments to view transverse spin asymmetries in inclusive reactions, as very exciting observables, although there were considered as irrelevant for a long…
Recent results in the Statistical Approach of Polarized PDF and Extension to Baryon Fragmentation Functions
Jacques Soffer
Parton distributions are constructed in a statistical physical picture of the nucleon. The chiral properties of QCD lead to strong relations between quarks and antiquarks distribut…
Deep Inelastic Scattering of Leptons and Hadrons in the QCD Parton Model and Experimental Tests
C. Bourrely, J. Soffer
We present the basic aspects of deep inelastic phenomena in the framework of the QCD parton model. After recalling briefly the standard kinematics, we discuss the physical interpre…
Is the riddle of the hyperon polarizations solved?
J. Soffer
We review in this talk some aspects of the exciting field of hyperon polarization phenomena in high energy reactions, over the last twenty years or so. On the experimental side, a…
Improved positivity bound for Deep Inelastic Scattering on transversely polarized nucleon
J. Soffer, O. V. Teryaev
The positivity bound for the transverse asymmetry may be improved by making use of the fact, that the state of a photon and a nucleon with total spin 3/2, does not participat…
Sum Rules and Positivity Constraints on Nucleon Spin Structure
O. Teryaev, B. Pire, J. Soffer
The spin structure of nucleon at twist 2 and 3 levels is analyzed. The contribution of quark and gluon spins to nucleon spin are Lorentz invariant, while it is not sure for orbital…