XXVIII International Workshop on Deep-Inelastic Scattering and Related Subjects

Simultaneous Monte Carlo analysis of parton densities and fragmentation functions

14 Apr 2021, 10:36

18m

Virtual (Stony Brook, NY)

Contributed Talk Structure Functions and Parton Densities Structure function and parton densities

Speaker

Eric Moffat (Old Dominion University)

Description

We present the results of a comprehensive new Monte Carlo analysis of high-energy lepton-lepton, lepton-hadron and hadron-hadron scattering data to simultaneously determine parton distribution functions (PDFs) in the proton and parton to hadron fragmentation functions (FFs). The analysis includes all available semi-inclusive deep-inelastic scattering and single-inclusive $e^{+}{e}^{-}$ annihilation data for pions, kaons and unidentified charged hadrons, which allows the flavor dependence of the fragmentation functions to be constrained. Employing a new multi-step fitting strategy and more flexible parametrizations for both PDFs and FFs, we assess the impact of different data sets on sea quark densities, and confirm the previously observed suppression of the strange quark distribution.

Presentation materials

DIS_4_14_21.pdf

Youtube Link