Publications
Publication Information
| Title | Simultaneous Monte Carlo analysis of parton densities and fragmentation functions |
| Authors | Eric Moffat, Wolodymyr Melnitchouk, Ted Rogers, Nobuo Sato |
| JLAB number | JLAB-THY-21-3304 |
| LANL number | arXiv:2101.04664 |
| Other number | DOE/OR/23177-5118 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physical Review D Volume 104 Page(s) 016015 Refereed | |
| Publication Abstract: | We perform 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. The new fit, which we refer to as ``JAM20-SIDIS'', will allow for improved studies of universality of parton correlation functions, including transverse momentum dependent (TMD) distributions, across a wide variety of process, and the matching of collinear to TMD factorization descriptions. |
| Experiment Numbers: | other |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevD.104.016015 |
| Accepted Manuscript: | PhysRevD.104.016015.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |