Results 121 to 130 of about 7,980 (214)

Generalized parton distributions and their singularities

Physical Review D, 2011
A new approach to building models of generalized parton distributions (GPDs) is discussed that is based on the factorized DD (double distribution) Ansatz within the single-DD formalism. The latter was not used before, because reconstructing GPDs from the forward limit one should start in this case with a very singular function f(β)/β rather than with ...
openaire   +3 more sources

Parton Distributions Working Group [PDF]

, 2000
This report summarizes the activities of the Parton Distributions Working Group of the QCD and Weak Boson Physics workshop held in preparation for Run II at the Fermilab Tevatron.
de Barbaro, L., Tung, W.-K., Schellman, H., Kuhlmann, S., Keller, S. A.   +4 more
core  

Nuclear parton distributions in the DGLAP approach

, 2001
Determination of the nuclear parton distributions within the framework of perturbative QCD, the DGLAP equations in particular, is discussed. Scale and flavour dependent nuclear effects in the parton distributions are compared with the scale and flavour ...
Eskola, K.J., Honkanen, H., Kolhinen, V.J., Ruuskanen, P.V., Salgado, C.A.   +4 more
core   +1 more source

Monte Carlo simulations of hard QCD radiation [PDF]

, 2009
Monte Carlo event generators, such as Herwig++, provide a full simulation of events at collider experiments. They give a fully exclusive description of hadronic final states and are therefore crucial tools for the planning of future experiments and ...
TULLY, JONATHAN
core  

Parton distributions from lattice QCD: an update

, 2004
We review the extraction of parton distributions from their moments calculated in lattice QCD, focusing in particular on their extrapolation to the physical region.
Melnitchouk, W., Detmold, W., Thomas, A.
core   +1 more source

On the role of soft and non-perturbative gluons in collinear parton densities and parton shower event generators

European Physical Journal C: Particles and Fields
The Parton Branching method offers a Monte Carlo solution to the DGLAP evolution equations by incorporating Sudakov form factors. In this approach, the Sudakov form factor can be divided into perturbative and non-perturbative components, with the non ...
M. Mendizabal, F. Guzman, H. Jung, S. Taheri Monfared   +3 more
doaj   +1 more source

Non-perturbative Parton Distributions in the Proton

, 1999
A model for the parton distributions in hadrons is derived from simple physical arguments leading to an analytical expression for the valence distributions. The sea parton distributions arise mainly from pions in hadronic fluctuations.
Edin Anders, Ingelman Gunnar, Torokoff Kristel,
core  

Singularities of Generalized Parton Distributions

, 2013
. (2013). Singularities of Generalized Parton Distributions.
Radyushkin
core   +1 more source

Non-equilibrium initial conditions from pQCD for RHIC and LHC

, 2005
We calculate the initial non-equilibrium conditions from perturbative QCD (pQCD) within Glauber multiple scattering theory for s = 200 AGeV and s = 5.5 ATeV.
Greiner, Walter, Stöcker, Horst, Hammon, Nils   +2 more
core  

Lorentz invariance relations among parton distributions revisited

, 2003
We revisit the derivation of the so-called Lorentz invariance relations between parton distributions. In the most important cases these relations involve twist-3 and transverse momentum dependent parton distributions. It is shown that these relations are
Pobylitsa, P.V., Polyakov, MV, Goeke, K., Metz, A., Goeke, K, Pobylitsa, PV, Metz, A, Polyakov, M.V.   +7 more
core   +1 more source