Quark distribution functions and spin-flavor structures in N→Δ transitions

Kim, June-Young

doi:10.1103/physrevd.108.034024

Title: Quark distribution functions and spin-flavor structures in N→Δ transitions

Journal Article · 25 August 2023 · Physical Review. D.

DOI: https://doi.org/10.1103/physrevd.108.034024 · OSTI ID:1996866

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Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Transition generalized parton distributions have emerged as a novel tool for studying the quantum chromodynamics (QCD) structure of resonances. They provide an integrated picture of the transition form factors and the transition parton distribution functions. In this study, we delve into the angular momentum (AM) properties for the $$N\to \Delta$$ transition and its decomposition into the orbital angular momentum and the intrinsic spin in the context of the quark distribution functions. First, we explore the spin-flavor structures within the framework of both the overlap representations of the three-quark light-cone wave functions and the large $$N_c$$ limit of QCD. We then estimate the AM quark distribution functions for the $$N\to \Delta$$ transition. Our analysis reveals a substantial flavor asymmetry present in both the orbital angular momentum and intrinsic spin components.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: SC0023646; AC05-06OR23177

OSTI ID:: 1996866

Alternate ID(s):: OSTI ID: 2202967

Report Number(s):: JLAB-THY-23-3908; arXiv:2305.12714; DOE/OR/23177-7104; TRN: US2406525

Journal Information:: Physical Review. D., Vol. 108, Issue 3; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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Title: Quark distribution functions and spin-flavor structures in N→Δ transitions

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