Updates of the MMHT2014 PDFs

Abstract

We briefly discuss some of the developments since the publication of the MMHT14 parton distributions. In particular we explore the impact of recent LHC data for $W^{\pm },Z$ and $t\bar{t}$ production, and perform a preliminary new analysis including these data. In this re-fit (which we tentatively call `MMHT16') there are few changes of significance in the central values of the PDFs, but some data reduce the uncertainties, mainly in the strange and valence quark distributions. We find that an extended $\bar{d}-\bar{u}$ parametrization only leads to minor changes, with the difference going to zero as $x\to 0$. We comment on the determination of the photon PDF.

7 pages, 4 figures, contribution to the proceedings of Diffraction2016 which was held in Sicily, Sept. 2-8

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• Parton distributions for the LHC
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• Measurement of the differential cross section and charge asymmetry for inclusive pp to W + X production at sqrt(s) = 8 TeV
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• The photon PDF of the proton
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Cited by in corpus (1)

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