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9th Workshop of the APS Topical Group on Hadronic Physics

Apr 13 – 16, 2021
US/Eastern timezone

Session

Fragmentation Functions

Apr 14, 2021, 3:30 PM

Conveners

Fragmentation Functions

  • Sookhyun Lee (University of Michigan, Ann Arbor)

Description

co-host: Ralf Seidl

Presentation materials

There are no materials yet.

  1. 235. Accessing Helicity-Dependent Fragmentation with SIDIS Dihadron Beam Spin Asymmetries at CLAS12
    Christopher Dilks (Duke University)
    4/14/21, 3:30 PM
    Oral Presentation

    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...

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  2. 173. Transverse Lambda polarization in electron-positron collisions
    Leonard Gamberg (Penn State Berks)
    4/14/21, 3:50 PM
    Oral Presentation

    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),...

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  3. 165. Simultaneous Monte Carlo analysis of parton densities and fragmentation functions
    Eric Moffat (Old Dominion University)
    4/14/21, 4:10 PM
    Oral Presentation

    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...

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  4. 140. Hadronization Studies in Z-tagged Jets at LHCb
    Kara Mattioli (University of Michigan)
    4/14/21, 4:30 PM
    Oral Presentation

    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...

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  5. 142. Jet-based measurement of Sivers and Collins asymmetries at the EIC
    Miguel Arratia (University of California, Riverside)
    4/14/21, 4:50 PM
    Oral Presentation

    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...

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