• Open Access

Updated QCD global analysis of single transverse-spin asymmetries: Extracting H˜, and the role of the Soffer bound and lattice QCD

Leonard Gamberg, Michel Malda, Joshua A. Miller, Daniel Pitonyak, Alexei Prokudin, and Nobuo Sato (Jefferson Lab Angular Momentum (JAM) Collaboration)
Phys. Rev. D 106, 034014 – Published 12 August 2022

Abstract

We present an update to the QCD global analysis of single transverse-spin asymmetries presented in [J. Cammarota et al. (Jefferson Lab Angular Momentum Collaboration), Phys. Rev. D 102, 054002 (2020).] (JAM3D-20). JAM3D-20 simultaneously included transverse momentum dependent and collinear twist-3 observables, both of which are sensitive to quark-gluon-quark correlations in hadrons. In this study we extract for the first time the twist-3 chiral odd fragmentation function H˜ by incorporating the sinϕs modulation data from semi-inclusive deep-inelastic scattering along with its contribution to the single transverse-spin asymmetry in pion production from proton-proton collisions. We also explore the impact of lattice QCD tensor charge calculations and the Soffer bound on our global analysis. We find that both constraints can be accommodated within our results, with H˜ playing a key role in maintaining agreement with the data from proton-proton collisions.

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  • Received 2 May 2022
  • Accepted 18 July 2022

DOI:https://doi.org/10.1103/PhysRevD.106.034014

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Leonard Gamberg1,*, Michel Malda2,†, Joshua A. Miller3,2,‡, Daniel Pitonyak2,§, Alexei Prokudin1,4,∥, and Nobuo Sato4,¶ (Jefferson Lab Angular Momentum (JAM) Collaboration)

  • 1Division of Science, Penn State University Berks, Reading, Pennsylvania 19610, USA
  • 2Department of Physics, Lebanon Valley College, Annville, Pennsylvania 17003, USA
  • 3Department of Physics, Temple University, Philadelphia, Pennsylvania 19122, USA
  • 4Theory Center, Jefferson Lab, Newport News, Virginia 23606, USA

  • *lpg10@psu.edu
  • mjm016@lvc.edu
  • joshua.miller0007@temple.edu
  • §pitonyak@lvc.edu
  • prokudin@jlab.org
  • nsato@jlab.org

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Issue

Vol. 106, Iss. 3 — 1 August 2022

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