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Longitudinal-transverse double-spin asymmetries in single-inclusive leptoproduction of hadrons

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arxiv 1411.6459 v2 pith:ZSSMG5JL submitted 2014-11-24 hep-ph hep-ex

K. Kanazawa , A. Metz , D. Pitonyak , M. Schlegel This is my paper · ORCID
classification hep-phhep-ex
keywords hadronasymmetrydouble-spineffectslongitudinal-transversenucleonresultstwist-3
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abstract

We analyze the longitudinal-transverse double-spin asymmetry in lepton-nucleon collisions where a single hadron is detected in the final state, i.e., $\vec{\ell}\,N^\uparrow \rightarrow h\,X$. This is a subleading-twist observable in collinear factorization, and we look at twist-3 effects in both the transversely polarized nucleon and the unpolarized outgoing hadron. Results are anticipated for this asymmetry from both HERMES and Jefferson Lab Hall A, and it could be measured as well at COMPASS and a future Electron-Ion Collider. We also perform a numerical study of the distribution term, which, when compared to upcoming experimental results, could allow one to learn about the "worm-gear"-type function $\tilde{g}(x)$ as well as assess the role of quark-gluon-quark correlations in the initial-state nucleon and twist-3 effects in the fragmenting unpolarized hadron.

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Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Single spin asymmetry in forward $pA$ collisions from Pomeron-Odderon interference

    hep-ph 2025-01 conditional novelty 7.0 of 10

    A new Pomeron-Odderon interference term in the hybrid CGC framework yields a percent-level transverse single spin asymmetry in forward pA collisions, with a characteristic sign-changing node at the saturation scale.

  2. Transverse single-spin asymmetries in $\gamma$SIDIS as a direct probe of quark-gluon-quark longitudinal momentum structure

    hep-ph 2025-05 conditional novelty 6.0 of 10

    The transverse spin asymmetry for isolated-photon SIDIS at EIC energies is estimated to reach 10% or more in specific kinematics, offering a path to constrain the quark-gluon-quark correlators F_FT(x,x') and G_FT(x,x'...

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