Transverse momentum dependent gluon density from DIS precision data

@article{Hautmann2014TransverseMD,
  title={Transverse momentum dependent gluon density from DIS precision data},
  author={Francesco Hautmann and H. T. Jung},
  journal={Nuclear Physics},
  year={2014},
  volume={883},
  pages={1-19}
}
Abstract The combined measurements of proton's structure functions in deeply inelastic scattering at the HERA collider provide high-precision data capable of constraining parton density functions over a wide range of the kinematic variables. We perform fits to these data using transverse momentum dependent QCD factorization and CCFM evolution. The results of the fits to precision measurements are used to make a determination of the nonperturbative transverse momentum dependent gluon density… Expand

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References

SHOWING 1-10 OF 118 REFERENCES
A precision measurement of the inclusive ep scattering cross section at HERA
A measurement of the inclusive deep inelastic neutral current e+p scattering cross section is reported in the region of four-momentum transfer squared, 12 GeV2≤Q2≤150 GeV2, and Bjorken x,Expand
Forward Z-boson production and the unintegrated sea quark density
Drell–Yan production in the forward region at the Large Hadron Collider is sensitive to multiple radiation of QCD partons not collinearly ordered, emitted over large rapidity intervals. We propose aExpand
Angular correlations in multi-jet final states from k⊥-dependent parton showers
We investigate parton-branching methods based on transverse-momentum dependent (TMD) parton distributions and matrix elements for the Monte Carlo simulation of multi-particle final states atExpand
Coherence effects in initial jets at small Q2/s
Abstract The QCD evolution of initial jets (corresponding to space-like partons) is analyzed for small Bjorken x. Coherent effects are described by a gluon emission current which also embodiesExpand
Final states in heavy quark leptoproduction at small x
The process of heavy quark production in ep collisions at very high energies is investigated in detail using a new Monte Carlo simulation of QCD which includes leading contributions in the small-xExpand
QCD scaling violation at small x
Abstract We investigate the evolution of parton densities at small values of the momentum fraction, x , by including resummed anomalous dimensions in the renormalization group equations. TheExpand
Diffractive deeply inelastic scattering of hadronic states with small transverse size
Diffractive deeply inelastic scattering from a hadron is described in terms of diffractive quark and gluon distributions. If the transverse size of the hadronic state is sufficiently small, theseExpand
Parton distribution function for quarks in an s-channel approach
We use an s-channel picture of hard hadronic collisions to investigate the parton distribution function for quarks at small momentum fraction x, which corresponds to very high energy scattering. WeExpand
High-energy factorization and small x deep inelastic scattering beyond leading order
High-energy factorization in QCD is investigated beyond leadinng order and its relationship to the factorization theorem of mass singularities is established to any collinear accuracy. FlavourExpand
Using HERA data to determine the infrared behaviour of the BFKL amplitude
We determine the infrared behaviour of the BFKL forward amplitude for gluon–gluon scattering. Our approach, based on the discrete pomeron solution, leads to an excellent description of the newExpand
...
1
2
3
4
5
...