# Correlation and combination of sets of parton distributions

@article{Ball2021CorrelationAC, title={Correlation and combination of sets of parton distributions}, author={Richard D. Ball and Stefano Forte and Roy Stegeman}, journal={The European Physical Journal C}, year={2021}, volume={81} }

We study the correlation between different sets of parton distributions (PDFs). Specifically, viewing different PDF sets as distinct determinations, generally correlated, of the same underlying physical quantity, we examine the extent to which the correlation between them is due to the underlying data. We do this both for pairs of PDF sets determined using a given fixed methodology, and between sets determined using different methodologies. We show that correlations have a sizable component…

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## References

SHOWING 1-10 OF 25 REFERENCES

### Future Tests of Parton Distributions

- Physics
- 2021

We discuss a test of the generalization power of the methodology used in the determination of parton distribution functions (PDFs). The "future test" checks whether the uncertainty on PDFs, in…

### Parton distributions from high-precision collider data

- PhysicsThe European physical journal. C, Particles and fields
- 2017

We present a new set of parton distributions, NNPDF3.1, which updates NNPDF3.0, the first global set of PDFs determined using a methodology validated by a closure test. The update is motivated by…

### Parton distributions from LHC, HERA, Tevatron and fixed target data: MSHT20 PDFs

- PhysicsThe European Physical Journal C
- 2021

We present the new MSHT20 set of parton distribution functions (PDFs) of the proton, determined from global analyses of the available hard scattering data. The PDFs are made available at NNLO, NLO,…

### PDF4LHC recommendations for LHC Run II

- Physics
- 2015

We provide an updated recommendation for the usage of sets of parton distribution functions (PDFs) and the assessment of PDF and PDF+$\alpha_s$ uncertainties suitable for applications at the LHC Run…

### Parton distribution functions at LO, NLO and NNLO with correlated uncertainties between orders

- Physics
- 2014

Sets of parton distribution functions (PDFs) of the proton are reported for the leading (LO), next-to-leading (NLO) and next-to-next-to-leading-order (NNLO) QCD calculations. The parton distribution…

### Parton distributions for the LHC run II

- Physics
- 2015

A bstractWe present NNPDF3.0, the first set of parton distribution functions (PDFs) determined with a methodology validated by a closure test. NNPDF3.0 uses a global dataset including HERA-II…

### Study of Monte Carlo approach to experimental uncertainty propagation with MSTW 2008 PDFs

- Physics
- 2012

A bstractWe investigate the Monte Carlo approach to propagation of experimental uncertainties within the context of the established “MSTW 2008” global analysis of parton distribution functions (PDFs)…

### New CTEQ global analysis of quantum chromodynamics with high-precision data from the LHC

- Physics
- 2019

We present the new parton distribution functions (PDFs) from the CTEQ-TEA collaboration, obtained using a wide variety of high-precision Large Hadron Collider (LHC) data, in addition to the combined…

### Parton distributions for the LHC

- Physics
- 2007

AbstractWe present updated leading-order, next-to-leading order and next-to-next-to-leading order parton distribution functions (“MSTW 2008”) determined from global analysis of hard-scattering data…