CTEQ6 parton distributions with heavy quark mass effects

@article{Kretzer2004CTEQ6PD,
  title={CTEQ6 parton distributions with heavy quark mass effects},
  author={Stefan Kretzer and Hung-Liang Lai and Fredrick I. Olness and W. K. Tung},
  journal={Physical Review D},
  year={2004},
  volume={69},
  pages={114005}
}
Previously published CTEQ6 parton distributions adopt the conventional zero-mass parton scheme; these sets are most appropriate for use with massless hard-scattering matrix elements commonly found in most physics applications. For precision observables which are sensitive to charm and bottom quark mass effects, we provide in this paper an additional CTEQ6HQ parton distribution set determined in the more general variable flavor number scheme which incorporates heavy flavor mass effects. The… Expand
View PDF on arXiv
124 Citations
Highly Influential Citations
3
Background Citations
7
Methods Citations
25
Results Citations
1

124 Citations

Citation Type

Citation Type

Heavy quark mass effects in deep inelastic scattering and global QCD analysis
A new implementation of the general PQCD formalism of Collins, including heavy quark mass effects, is described. Important features that contribute to the accuracy and efficiency of the calculation… Expand
Target mass corrections
With recent advances in the precision of inclusive lepton–nuclear scattering experiments, it has become apparent that comparable improvements are needed in the accuracy of the theoretical analysis… Expand
Probing the strange content of the proton with charm production in charged current at LHeC
We study charm production in charged-current deep-inelastic scattering (DIS) using the xFitter framework. Recent results from the LHC have focused renewed attention on the determination of the… Expand
Open-source QCD analysis of nuclear parton distribution functions at NLO and NNLO
We present new sets of nuclear parton distribution functions (nPDFs) at next-to-leading order and next-to-next-to-leading order. Our analyses are based on deeply inelastic scattering data with… Expand
Heavy quarks in deep-inelastic scattering
We discuss a general framework for the inclusion of heavy quark mass contributions to deep-inelastic structure functions and their perturbative matching to structure functions computed in… Expand
Parton momentum and helicity distributions in the nucleon
We review the current status of spin-averaged and spin-dependent parton distribution functions (PDFs) of the nucleon. After presenting the formalism used to fit PDFs in modern global data analyses,… Expand
On the role of heavy flavor parton distributions at high energy colliders
Abstract We compare ‘fixed flavor number scheme’ (FFNS) and ‘variable flavor number scheme’ (VFNS) parton model predictions at high energy colliders. Based on our recent LO- and NLO-FFNS dynamical… Expand
Update of Parton Distributions at NNLO
Abstract We present a new set of parton distributions obtained at NNLO. These differ from the previous sets available at NNLO due to improvements in the theoretical treatment. In particular we… Expand
Weak interaction effects in top-quark pair production at hadron colliders
Top-quark physics plays an important role at hadron colliders such as the Tevatron at Fermilab or the upcoming Large Hadron Collider (LHC) at CERN. Given the planned experimental precision, detailed… Expand
Implementation of target mass corrections and higher-twist effects in the xFitter framework
Knowledge of parton distribution functions (PDFs) at large momentum fraction x is not only important to study the flavor and spin dynamics of quarks in the nucleon, but also to search for signals of… Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 50 REFERENCES
Calculating heavy quark distributions
A systematic calculation of the evolution of parton distribution functions including the effects of heavy-quark masses is presented. The method involves the use of a special renormalization scheme… Expand
Resummation of transverse momentum and mass logarithms in DIS heavy quark production
Differential distributions for heavy quark production depend on the heavy quark mass and other momentum scales, which can yield additional large logarithms and inhibit accurate predictions.… Expand
Comparison between variable flavor number schemes for charm quark electroproduction
A comparison is made between two variable flavor number schemes which describe charm quark production in deep inelastic electron-proton scattering. In these schemes the coefficient functions are… Expand
A practical procedure for evolving heavy flavour structure functions
Abstract The transition from the low Q2 region in deep inelastic scattering where charm production is described by photon-gluon fusion to a region where the charm structure function F2c is largely… Expand
Reanalysis of the EMC charm production data with extrinsic and intrinsic charm at NLO
Abstract A calculation of the next-to-leading order exclusive extrinsic charm quark differential distributions in deeply inelastic electroproduction has recently been completed. Using these results… Expand
QCD formulation of charm production in deep-inelastic scattering and the sea-quark-gluon dichotomy.
TLDR
Gluon-initiated contributions to deep-inelastic-scattering processes, such as charm production, can be comparable in magnitude to the leading-order'' sea-quark processes, which implies that previous analyses of charm-production data to extract the strange and charm content of the nucleon need to be reassessed. Expand
Complete O(αS) corrections to heavy-flavour structure functions in electroproduction
The complete O(αS) QCD corrections to the virtual-photon cross sections for heavy-flavour production in deep-elastic electron-proton scattering are presented. These results are then used to calculate… Expand
Open heavy flavour production: conceptual framework and implementation issues
TLDR
A so far overlooked kinematic constraint on the threshold behaviour is pointed out, which greatly simplifies the variable flavour number scheme and obviates the need for the elaborate existing prescriptions and leads to robust predictions. Expand
Uncertainties of predictions from parton distribution functions. II. The Hessian method
We develop a general method to quantify the uncertainties of parton distribution functions and their physical predictions, with emphasis on incorporating all relevant experimental constraints. The… Expand
Heavy quark initiated contributions to deep inelastic structure functions
We present O(alpha_s^1) corrections to deep inelastic scattering amplitudes on massive quarks obtained within the scheme of Aivazis, Collins, Olness and Tung (ACOT). After identifying the correct… Expand
...
1
2
3
4
5
...