• Open Access

Numerical study of the twist-3 asymmetry ALT in single-inclusive electron-nucleon and proton-proton collisions

Brandon Bauer, Daniel Pitonyak, and Cody Shay
Phys. Rev. D 107, 014013 – Published 10 January 2023

Abstract

We provide the first rigorous numerical analysis of the longitudinal-transverse double-spin asymmetry ALT in electron-nucleon and proton-proton collisions for the case where only a single pion, jet, or photon is detected in the final state. Given recent extractions of certain, previously unknown, nonperturbative functions, we are able to compute contributions from all terms relevant for ALT and make realistic predictions for the observable at Jefferson Lab (JLab) 12 GeV, COMPASS, the future Electron-Ion Collider, and the Relativistic Heavy Ion Collider. We also compare our results to a JLab 6 GeV measurement, which are the only data available for this type of reaction. The twist-3 nature of ALT makes it a potentially fruitful avenue to probe quark-gluon-quark correlations in hadrons as well as provide insights into dynamical quark mass generation in QCD.

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  • Received 29 October 2022
  • Accepted 19 December 2022

DOI:https://doi.org/10.1103/PhysRevD.107.014013

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

Brandon Bauer, Daniel Pitonyak, and Cody Shay

  • Department of Physics, Lebanon Valley College, Annville, Pennsylvania 17003, USA

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Issue

Vol. 107, Iss. 1 — 1 January 2023

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