Particle Physics

SCHOOL OF PARTICLES AND ACCELERATORS
Journal Club: Experiment & Phenomenology – meeting
Impact of SeaQuest data on parton distribution functions (PDFs) at large x

Dr. Muhammad Goharipour - School of Particles and Accelerators, IPM


6 NOV 2023
11:00 - 12:00

Abstract:

We evaluate the impact of recent SeaQuest (FNAL-E906 experiment) data on dimuon production in proton-deuteron and proton-proton collisions on parton distribution functions (PDFs). We find these data in a good agreement with the QCD predictions based on PDFs fitted to the Tevatron andLHC data on forward production of W and Z bosons. As a basis for this study we use the ABMP16PDF fits and show that they turn out to be compatible with the SeaQuest data, and that these data have constraining power, allowing to reduce the uncertainties on the isospin asymmetry of the light-sea-quark distribution at large longitudinal momentum fraction x. We also comment on the compatibility of the SeaQuest results with other state-of-the-art PDF fits and show that these data are in clear disagreement with models proposing an SU(3)-flavor symmetric quark sea.

Based on:
https://arxiv.org/2306.01918

Meeting Place:
Link to Join Virtually:
https://meet.google.com/fnv-dfkk-ghb


Link: https://meet.google.com/fnv-dfkk-ghb