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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2507.18402 |
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| _version_ | 1866912499841892352 |
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| author | Kim, June-Young Weiss, Christian |
| author_facet | Kim, June-Young Weiss, Christian |
| contents | The generalized parton distributions for transitions between baryon states with different masses have a forward limit in which they behave as parton densities (light-front momentum transfer $Δ^+, Δ_T = 0$, energy transfer $Δ^- \neq 0$). These "transition parton densities'' can realize spin/isospin quantum numbers not accessible in the ground-state nucleon. The $N \rightarrow Δ$ transition gives rise to a new parton density proportional to the $1/2 \rightarrow 3/2$ spin transition tensor. Its properties are derived, and its magnitude is estimated in the chiral quark-soliton model based on the large-$N_c$ limit of QCD. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_18402 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Tensor-polarized parton density in the $N \rightarrow Δ$ transition Kim, June-Young Weiss, Christian High Energy Physics - Phenomenology The generalized parton distributions for transitions between baryon states with different masses have a forward limit in which they behave as parton densities (light-front momentum transfer $Δ^+, Δ_T = 0$, energy transfer $Δ^- \neq 0$). These "transition parton densities'' can realize spin/isospin quantum numbers not accessible in the ground-state nucleon. The $N \rightarrow Δ$ transition gives rise to a new parton density proportional to the $1/2 \rightarrow 3/2$ spin transition tensor. Its properties are derived, and its magnitude is estimated in the chiral quark-soliton model based on the large-$N_c$ limit of QCD. |
| title | Tensor-polarized parton density in the $N \rightarrow Δ$ transition |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2507.18402 |