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Multidimensional partial wave analysis of SIDIS dihadron beam spin asymmetries at CLAS12

by C. Dilks

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Submission summary

Authors (as registered SciPost users): Christopher Dilks
Submission information
Preprint Link: https://arxiv.org/abs/2107.12965v1  (pdf)
Date accepted: 2022-03-01
Date submitted: 2021-07-28 16:35
Submitted by: Dilks, Christopher
Submitted to: SciPost Physics Proceedings
Proceedings issue: 28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects (DIS2021)
Ontological classification
Academic field: Physics
Specialties:
  • High-Energy Physics - Experiment
Approach: Experimental

Abstract

Dihadron beam spin asymmetries provide a wide range of insights into nucleon structure and hadronization. Recent measurements at CLAS12 provide the first empirical evidence of nonzero $G_1^\perp$, the parton helicity-dependent dihadron fragmentation function (DiFF) encoding spin-momentum correlations in hadronization. These measurements also allow for a point-by-point extraction of the subleading-twist PDF $e(x)$ in a collinear framework. We observe different behavior of the asymmetries in different invariant mass regions, motivating a fully multidimensional study. The DiFFs also expand in terms of partial waves, each corresponding to the interference of dihadrons of particular polarizations. Altogether a fully multidimensional partial wave analysis is needed, and this presentation will summarize the efforts and results obtained thus far.

Published as SciPost Phys. Proc. 8, 152 (2022)


Reports on this Submission

Anonymous Report 1 on 2022-2-24 (Invited Report)

Report

Results are very nicely summarized in the report. I recommend for publication as it is.

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