Results 121 to 130 of about 73,606 (214)

Nonperturbative evolution of parton quasi-distributions

Physics Letters B, 2017
Using the formalism of parton virtuality distribution functions (VDFs) we establish a connection between the transverse momentum dependent distributions (TMDs) F(x,k⊥2) and quasi-distributions (PQDs) Q(y,p3) introduced recently by X.
A.V. Radyushkin
doaj   +1 more source

Longitudinal and transverse parton momentum distributions for pion and nucleon within relativistic constituent quark models

EPJ Web of Conferences, 2010
Longitudinal and transverse quark momentum distributions for the pion and the nucleon are calculated from quark-hadron vertexes obtained by an investigat ion of electromagnetic form factors within relativistic constituent quark models. The no-helicity
Pasquini B., Frederico T., Pace E., Salmè G.   +3 more
doaj   +1 more source

Modelling the nuclear parton distributions

, 2016
We review a semi-microscopic model of nuclear parton distributions, which takes into account a number of nuclear effects including Fermi motion and nuclear binding, nuclear meson-exchange currents and off-shell corrections to bound nucleon distributions ...
Kulagin, S. A.
core   +1 more source

Nuclear Parton Distributions with the LHeC

EPJ Web of Conferences, 2016
Nuclear parton distributions are far from being known today because of an infant experimental base. Based on design studies of the LHeC and using new simulations, of the inclusive neutral and charged current cross section measurements and of the strange,
Klein Max
doaj   +1 more source

Top-quark pole mass extraction at NNLO accuracy, from total, single- and double-differential cross sections for t t ¯ $$ t\overline{t} $$ + X production at the LHC

Journal of High Energy Physics
We extract the top-quark mass value in the on-shell renormalization scheme from the comparison of theoretical predictions for pp → t t ¯ $$ t\overline{t} $$ + X at next-to-next-to-leading order (NNLO) QCD accuracy with experimental data collected by the ...
M. V. Garzelli, J. Mazzitelli, S.-O. Moch, O. Zenaiev   +3 more
doaj   +1 more source

Exploring twist-4 chiral-even GPDs in the light-front quark-diquark model

Nuclear Physics B
In this work, we delve into the realm of quantum chromodynamics (QCD) by calculating twist-4 chiral-even generalized parton distributions (GPDs), within the context of the light-front quark-diquark model (LFQDM), focusing specifically on the intriguing ...
Shubham Sharma, Harleen Dahiya
doaj   +1 more source

Parton Distributions

, 1998
4 pages LaTeX, 1 Postscipt figures. Contribution to the 6_th International Workshop on Deep Inelastic Scattering and QCD, DIS 98, Brussels, Belgium, April 4-8, 1998, to appear in the ...
openaire   +2 more sources

Brief review on generalized parton distributions

EPJ Web of Conferences, 2014
We briefly review some recent developments in the field of Generalized Parton Distributions (GPDs) and Deeply virtual Compton scattering in the valence region. First steps in the direction of nucleon imaging are presented.
Guidal Michel
doaj   +1 more source

Doped Parton Distributions

, 2015
Calculations of high-energy processes involving the production of b-quarks are typically performed in two different ways, the massive four-flavour scheme (4FS) and the massless five-flavour scheme (5FS). For processes where the combination of the 4FS and
Bertone, Valerio, Carrazza, Stefano, Rojo, Juan   +2 more
core   +1 more source

New Approaches to Target Mass Corrections

, 2011
We analyze different prescriptions for the inclusion of target mass effects in the extraction of parton distributions from the measured structure functions. As a main result, the problem of defining parton distributions in the presence of mass is an open
Steffens, F. M.
core   +1 more source