Speaker
Description
MSHT20 is the latest PDF fit from the MRST/MSTW/MMHT/MSHT collaboration, representing our most accurate and precise determination of the PDFs to date it is designed for the LHC precision era. We present a general review and outline further progress which has been made. This includes the effects of varying the strong coupling α_S (M_Z^2) and the masses of the charm and bottom quarks. We determine the preferred value, and accompanying uncertainties, when we allow α_S (M_Z^2) to be a free parameter in the MSHT20 global analyses of deep-inelastic and related hard scattering data, at both NLO and NNLO in QCD perturbation theory. We also perform fits where we allow the heavy quark masses m_c and m_b to vary away from their default values and examine the PDF sensitivity. We make all resulting PDFs sets available.
| Submitted on behalf of a Collaboration? | Yes |
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