Unified Picture of Dis and Diffractive Dis
نویسنده
چکیده
The QCD dipole picture allows to build an unified theoretical description -based on BFKL dynamicsof the total and diffractive nucleon structure functions. We use a four parameter fit to describe the 1994 H1 proton structure function F2 data in the low x, moderate Q2 range. Without any additional parameter, the gluon density and the longitudinal structure functions are predicted. The diffractive dissociation processes are discussed within the same framework, and a new 6 parameter fit of the 1994 H1 data is performed which leads to a comprehensive description of
منابع مشابه
Towards the Theory of Diffractive DIS∗
The large rapidity gap events, observed at HERA, have changed considerably our physical picture of deep inelastic scattering during the past years. We review the present theoretical understanding of diffractive DIS with emphasis on the close relation to inclusive DIS. This includes success and limitations of the leading twist description, the connection between diffractive and inclusive parton ...
متن کاملConnection between Diffraction and Small-x
Let us dream of e-Uranium DIS at THERA at Q ∼ 10 GeV and x ∼ 10. Violent DIS is associated with complete destruction of the target, deposition of a mere dozen MeV energy breaks the uranium nucleus entirely, yet a rigorous prediction from unitarity is that diffractive DIS eU → eXU with the target nucleus emerging intact in the ground state will make≈ 50% of total DIS ! By the Glauber-Gribov theo...
متن کاملEikonal evolution and gluon radiation
We give a simple quantum mechanical formulation of the eikonal propagation approximation, which has been heavily used in recent years in problems involving hadronic interactions at high energy. This provides a unified framework for several approaches existing in the literature. We illustrate this scheme by calculating the total, elastic, inelastic and diffractive DIS cross sections, as well as ...
متن کاملQuark-Antiquark Jets in DIS Diffractive Dissociation
We report on investigations concerning the production of large transverse momentum jets in DIS diffractive dissociation. These processes constitute a new class of events that allow for a clean test of perturbative QCD and of the hard (perturbative) pomeron picture. The measurement of the corresponding cross sections might possibly serve to determine the gluon density of the proton.
متن کاملParticle Production and Fragmentation at Hera
• Charged Multiplicities in DIS and diffractive DIS (DDIS). The use of W and Ecurrent and a unified approach to DIS and DDIS. • Inclusive photoproduction of non-strange mesons. Universal rate curve as a function of (pT +m). • Strange Particle Production and polarisation, looked at as a function of pT , η,Q , x. • Charm fragmentation. Universality in DIS, photoproduction and ee annihilation. • B...
متن کامل