Pith. sign in

REVIEW

The photon PDF from high-mass Drell Yan data at the LHC

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 1701.08553 v1 pith:MS5DHYUT submitted 2017-01-30 hep-ph

F. Giuli , xFitter Developers' team: V. Bertone , D. Britzger , S. Carrazza , A. Cooper-Sarkar , A. Glazov , K. Lohwasser , A. Luszczak
show 8 more authors
F. Olness R. Placakyte V. Radescu J. Rojo R. Sadykov P. Shvydkin O. Zenaiev M. Lisovyi
This is my paper
classification hep-ph
keywords photonaccountcorrectionsdistributioneffectsfitshigh-massparton
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
abstract

Achieving the highest precision for theoretical predictions at the LHC requires the calculation of hard-scattering cross-sections that include perturbative QCD corrections up to (N)NNLO and electroweak (EW) corrections up to NLO. Parton distribution functions (PDFs) need to be provided with matching accuracy, which in the case of QED effects involves introducing the photon parton distribution of the proton, $x\gamma(x,Q^2)$. In this work a determination of the photon PDF from fits to recent ATLAS measurements of high-mass Drell-Yan dilepton production at $\sqrt{s}=8$ TeV is presented. This analysis is based on the xFitter framework, and has required improvements both in the APFEL program, to account for NLO QED effects, and in the aMCfast interface to account for the photon-initiated contributions in the EW calculations within MadGraph5_aMC@NLO. The results are compared with other recent QED fits and determinations of the photon PDF, consistent results are found.

Discussion (0). Sign in to comment.

Pith tools