Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 76, Issue 4, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-016-4020-1
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Funding
- London Centre for Terauniverse Studies (LCTS)
- European Research Council via the Advanced Investigator [267352]
- IPPP, Durham
- Science and Technology Facilities Council (STFC) [ST/J000515/1, ST/L000377/1]
- STFC [ST/J000515/1, ST/L000377/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/L000377/1, ST/J000515/1] Funding Source: researchfish
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We investigate the effect of including the HERA run I + II combined cross section data on the MMHT2014 PDFs. We present the fit quality within the context of the global fit and when only the HERA data are included. We examine the changes in both the central values and the uncertainties in the PDFs. We find that the prediction for the data is good, and only relatively small improvements in chi(2) and changes in the PDFs are obtained with a refit at both NLO and NNLO. PDF uncertainties are slightly reduced. There is a small dependence of the fit quality on the value of Q(min)(2). This can be improved by phenomenologically motived corrections to F-L (x, Q(2)) which parametrically are largely in the form of higher-twist type contributions.
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