Impact of HERA-I Combined Data on Global PDF Fits

The data from the first combined HERA I publication has been used recently by other fitting groups. The impact is illustrated in the following selected plots.

NNPDF [ Talk by M. Ubiali at DIS2010, Florence ]

Comparison of the NNPDFs extracted using the separate HERA-1 data sets (red) to that using the combined data set (blue) for the gluon (left) and the sea (right) .

MSTW [ Talk by R. Thorn at DIS2010, Florence ]

Comparison of Tevatron and LHC cross-sections extracted using MSTW NLO PDFS with the separate HERA-1 data sets (MSTW08) and with the combined data set .

CTEQ [ Talk by M. Guzzi at DIS2010, Florence ]

Comparison of the CTEQ PDFs extracted using the separate HERA-1 data sets (blue) to that using the combined data set (pink) for the gluon.

^{H1ZEUS PDF}

^{HERAPDF1.0                         H1ZEUS Results}