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arXiv · 2406.08559

The connection between Nucleon Energy Correlators and Fracture Functions

Kai-Bao Chen·Jian-Ping Ma·Xuan-Bo Tong
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Abstract

We establish a sum rule that connects fracture functions to nucleon energy-energy correlators~(NEECs) in a one-to-one correspondence. Using this sum rule, we study the energy pattern in the target fragmentation region of deep inelastic scatterings. Through investigations up to twist-3, we express all eighteen energy-pattern structure functions in terms of associated NEECs, elucidating various azimuthal and spin asymmetries critical for nucleon tomography. Additionally, we investigate the perturbative matching of the twist-2 quark NEECs. We demonstrate that the Sivers-type and worm-gear-type quark NEECs match onto twist-3 multi-parton distributions. Our work provides a framework for examining energy-weighted observables through hadron production processes in the target fragmentation region, offering new insights into nucleon tomography.

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Kai-Bao Chen, Jian-Ping Ma, Xuan-Bo Tong. 2024-06-12. The connection between Nucleon Energy Correlators and Fracture Functions. https://arxiv.org/abs/2406.08559

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