Conveners
Fragmentation Functions
- Sookhyun Lee (University of Michigan, Ann Arbor)
Description
co-host: Ralf Seidl
Dihadron beam spin asymmetries present powerful probes of nucleon structure and hadronization, in particular, spin-momentum correlations in hadronization. Recent measurements at CLAS12 provide the first empirical evidence of a nonzero $G_1^\perp$, the parton helicity-dependent dihadron fragmentation function (DiFF), which encodes spin-momentum correlations in hadronization. A sign change is...
In this talk I will present a study transverse polarization of lambda-hyperons in single-inclusive leptonic annihilation (SIA). We show that when the transverse momentum of the lambda-baryon is measured with respect to the thrust axis, a transverse momentum dependent (TMD) formalism is required and the polarization is generated by the TMD polarizing fragmentation function (TMD PFF),...
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...
Hadronization, the process by which quarks and gluons form color-neutral bound states, remains poorly understood despite its widespread importance as a fundamental component of QCD. Jets present ideal environments in which to study high-energy hadronization, as they are formed by a scattered parton and contain the final-state hadrons produced during the hadronization process. Distributions of...
We present predictions and projections for hadron-in-jet measurements and electron-jet azimuthal correlations at the future Electron-Ion Collider. These observables directly probe the quark transversity and Sivers parton distributions, the Collins fragmentation functions, and TMD evolution. This jet-based approach will allow us to avoid the convolution of TMD parton distributions and...
