Parton Distributions with the Combined HERA Charm Production Cross Sections
Valerio Bertone, Juan Rojo
TL;DR
This paper discusses the integration of HERA charm production data into parton distribution functions, highlighting improvements in constraining gluon and quark distributions at small-x through advanced theoretical schemes and benchmarking.
Contribution
It introduces the implementation of the FONLL General-Mass scheme with running heavy quark masses and assesses its impact on PDF fits using combined HERA charm data.
Findings
Combined charm data constrains small-x gluon and quark PDFs.
Benchmarking confirms the reliability of the FONLL scheme.
Inclusion of charm data improves PDF accuracy at small-x.
Abstract
Heavy quark structure functions from HERA provide a direct handle on the medium and small-x gluon PDF. In this contribution, we discuss ongoing progress on the implementation of the FONLL General-Mass scheme with running heavy quark masses, and of its benchmarking with the HOPPET and OpenQCDrad codes, and then present the impact of the recently released combined HERA charm production cross sections in the NNPDF2.3 analysis. We find that the combined charm data contribute to constraining the gluon and quarks at small values of Bjorken-x.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.