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Multidimensional partial wave analysis of SIDIS dihadron beam spin asymmetries at CLAS12
by C. Dilks
Submission summary
| Authors (as registered SciPost users): | Christopher Dilks |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2107.12965v1 (pdf) |
| Date accepted: | March 1, 2022 |
| Date submitted: | July 28, 2021, 4:35 p.m. |
| Submitted by: | Christopher Dilks |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects (DIS2021) |
| Ontological classification | |
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| Academic field: | Physics |
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| 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)