ar X iv : h ep - p h / 03 04 12 2 v 3 2 8 A pr 2 00 3 What exactly is a parton density ?

ar X iv : h ep - p h / 03 04 12 2 v 2 2 3 A pr 2 00 3 What exactly is a parton density ?

I give an account of the definitions of parton densities, both the conventional ones, integrated over parton transverse momentum, and unintegrated transverse-momentum-dependent densities. The aim is to get a precise and correct definition of a parton density as the target expectation value of a suitable quantum mechanical operator, so that a clear connection to non-perturbative QCD is provided....

ar X iv : h ep - p h / 03 04 12 2 v 1 1 2 A pr 2 00 3 What exactly is a parton density ?

I give an account of the definitions of parton densities, both the conventional ones, integrated over parton transverse momentum, and unintegrated transverse-momentum-dependent densities. The aim is to get a precise and correct definition of a parton density as the target expectation value of a suitable quantum mechanical operator, so that a clear connection to non-perturbative QCD is provided....

ar X iv : h ep - p h / 03 04 15 1 v 1 1 5 A pr 2 00 3 Gluon Radiation and Parton Energy Loss

The propagation of hard partons through spatially extended matter leads to medium-modifications of their fragmentation pattern. Here, we review the current status of calculations of the corresponding medium-induced gluon radiation, and how this radiation affects hadronic observables at collider energies.

ar X iv : h ep - p h / 02 03 04 2 v 2 4 A pr 2 00 2 Once more on mixing of the a 0 ( 980 ) and f 0 ( 980 ) mesons

ar X iv : h ep - p h / 03 07 33 3 v 1 2 8 Ju l 2 00 3 Electroweak radiative effects in the single W - production at Tevatron and LHC

An alternative calculation of the lowest order electroweak radiative corrections (EWC) to the single W-boson production in hadron-hadron collision in the framework of the quark parton model without any absorption of the collinear quark singularity into the parton distributions is carried out. Numerical analysis under Tevatron and LHC kinematic conditions is performed.