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Emanuele Nocera: The Path to N3LO Parton Distribution Functions

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A.1.01/03 - Alps (MPP)

A.1.01/03 - Alps

MPP
Description

Zoom link provided in the email announcement 

    • 11:00 → 12:30
      The Path to N3LO Parton Distribution Functions 1h 30m

      I present an extension of the NNPDF4.0 parton distribution
      functions (PDFs) at approximate next-to-next-to-next-to-leading order
      (N3LO). In particular, I discuss how an approximation for the N3LO
      splitting functions can be constructed from available fixed-order and
      resummed computations, and how this can be combined with (partial)
      knowledge of N3LO partonic matrix elements to determine a set of N3LO
      PDFs. I explain how this set incorporates uncertainties from
      incomplete knowledge of N3LO terms in the splitting functions,
      and from missing higher-order corrections, estimated by scale
      variation, through a theory covariance matrix formalism. I assess the
      perturbative stability of the PDFs, compare them with those from MSHT,
      and examine the phenomenological impact of approximate N3LO
      corrections on parton luminosities at the LHC, and on the Higgs and
      Drell-Yan total production cross sections.

      Speaker: Prof. Emanuele Roberto Nocera (University of Turin)
      NOCERA_Munich.pdf