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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

As Contributors: Christopher Dilks
Arxiv Link: (pdf)
Date accepted: 2022-03-01
Date submitted: 2021-07-28 16:35
Submitted by: Dilks, Christopher
Submitted to: SciPost Physics Proceedings
Proceedings issue: DIS2021
Academic field: Physics
  • High-Energy Physics - Experiment
Approach: Experimental


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)

Submission & Refereeing History

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Submission 2107.12965v1 on 28 July 2021

Reports on this Submission

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


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

  • validity: -
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