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CT18 LO

Additional figures and results

On this page, we collect figures of CT18 LO in the comparison with CT18 NLO, MHST20 LO, and NNPDF4.0 LO. We do not present the error set for the CT18 LO, due to the large theoretical uncertainty in a LO PDF analysis.

If you use the results from this website, please kindly cite:
A CT18 global PDF fit at the leading order in QCD Mengshi Yan, Tie-Jiun Hou, Pavel Nadolsky, and C.-P. Yuan [arXiv:2205.00137]

To download a figure in the Encapsulated Postscript (EPS) format, click on its thumbnail image

CT18 LO v.s. CT18 NLO

Q = 1.3 GeV

gluon at Q=1.3 GeV u quark at Q=1.3 GeV d quark at Q=1.3 GeV s quark at Q=1.3 GeV u valence at Q=1.3 GeV d valence at Q=1.3 GeV anti-u quark at Q=1.3 GeV anti-d quark at Q=1.3 GeV

Q = 100.0 GeV

gluon at Q=100.0 GeV u quark at Q=100.0 GeV d quark at Q=100.0 GeV s quark at Q=100.0 GeV u valence at Q=100.0 GeV d valence at Q=100.0 GeV anti-u quark at Q=100.0 GeV anti-d quark at Q=100.0 GeV

CT18 LO v.s. MSHT20 LO v.s. NNPDF4.0 LO

Q = 2.0 GeV

gluon at Q = 2.0 GeV u quark at Q = 2.0 GeV d quark at Q = 2.0 GeV s quark at Q = 2.0 GeV u valence at Q = 2.0 GeV d valence at Q = 2.0 GeV anti-u quark at Q = 2.0 GeV anti-d quark at Q = 2.0 GeV

mu = 100.0 GeV

gluon at Q = 100.0 GeV u quark at Q = 100.0 GeV d quark at Q = 100.0 GeV s quark at Q = 100.0 GeV u valence at Q = 100.0 GeV d valence at Q = 100.0 GeV anti-u quark at Q = 100.0 GeV anti-d quark at Q = 100.0 GeV