The finite corrections of order % in perturbative QCD to the cross-sections for semi-inclusive hadron production from deep inelastic leptonhadron scattering and electron-positron annihilation are calculated. We define the effective quark fragmentation functions via e § e--* hadron + X including the finite terms in order to estimate these corrections for the reactions lepton + hadron --* lepton ...

Features of high energy pp and pA elastic scattering at small t Abstract A method for the determination of the real part of the elastic scattering amplitude is examined for high energy proton-proton and proton-nuclei elastic scattering at small momentum transfer. This method allows us to decrease the number of model assumptions, to obtain the real parts of the spin-non-flip and spin-flip amplit...

Abstract Exclusive production of charmonium-like XYZ states in hadron–hadron ultraperipheral collisions (UPCs) and electron–proton scattering are studied employing the effective Lagrangian method. Total cross sections rapidity distributions obtained UPCs process. These predictions can be applied to estimate observed event number exclusive scattering. The results indicate that it is significant ...

I will emphasize two points in my lectures on Theoretical Aspects of LeptonHadron Scattering: (1) The crucial importance of testing the “exact” sum rules as tests of the local current algebra. Discrepancies, if found, between experiment and theory cannot be “interpreted away” in terms of more complex parton wave functions for the hadronic ground state. The three sum rules of interest are those ...