Coordinatori
Diffraction in DIS (IV)
- D.A. Ross
Dr.
Wolf-Dieter Nowak
(DESY/Freiburg University)
11/09/14, 17:40
Diffraction in DIS
A brief experimentalist's introduction to Generalized Parton Distributions (GPDs) is given. Recent COMPASS results are shown on exclusive production of neutral rho-mesons, and their interpretation in terms of a phenomenological model as indication for chiral-odd, transverse GPDs is discussed. It is briefly outlined how to access GPDs at COMPASS and projections are shown for future [2016/17]...
Dr.
Dieter Mueller
(Ruhr-University Bochum)
11/09/14, 18:05
Diffraction in DIS
We report on some new theoretical results for the representation of generalized parton distributions (GPDs), the understanding of next-to-leading order corrections to hard exclusive processes, the calculation of higher twist corrections to deeply virtual Compton scattering, and we present the first global GPD fit to H1 and ZEUS data.
Prof.
Boris Kopeliovich
(UTFSM)
11/09/14, 18:25
Diffraction in DIS
The Pomeron structure measured in diffractive DIS is a higher twist and cannot be applied to diffractive hadronic collisions. Interaction with the spectators breaks factorization of soft and hard interactions and
results in a leading twist effect.
Sig.
Renaud Boussarie
(LPT Orsay)
11/09/14, 18:45
Diffraction in DIS
We present the calculation of the impact factor for the photon to quark, antiquark and gluon transition within Balitsky's high energy OPE. We also rederive the impact factor for photon to quark and antiquark transition within the same framework. These results provide the necessary building blocks for further phenomenological studies of inclusive diffractive DIS as well as for two and three...
Prof.
Boris Ermolaev
(Ioffe Physico-Technical Institute)
11/09/14, 19:05
Diffraction in DIS
Factorization is the fundamental concept in order to apply
QCD calculations to description of hadronic reactions. According to Fac-
torization, theoretical study of any hadronic process includes both parton
scattering and parton distributions. The partonic sub-processes are calcu-
lated with the use of regular methods of perturbative QCD. In contrast, the
parton distributions are...
