Short-Range Correlations and Transverse Response Enhancement from Meson-Exchange Currents
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arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866917026617884672 |
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| author | Casale, P. R. Amaro, J. E. |
| author_facet | Casale, P. R. Amaro, J. E. |
| contents | We investigate the role of short-range correlations (SRC) in the transverse nuclear response within the quasielastic peak region, focusing on the 1p1h channel. The calculation is performed in nuclear matter by solving the Bethe-Goldstone equation with the realistic Granada 2013 nucleon-nucleon potential, including both one-body and two-body meson-exchange currents (MEC) of seagull, pion-in-flight, and $Δ$ types. We find that MEC produce a sizable enhancement of the transverse response in the 1p1h channel when acting on correlated nucleon pairs with high-momentum components generated by SRC. This contrasts with the uncorrelated case, where MEC, dominated by the $Δ$ current, can even yield a negative effect. The results are consistent with previous findings based on the correlated basis function approach, supporting the interpretation that SRC play a central role in the transverse response enhancement from MEC. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_16578 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Short-Range Correlations and Transverse Response Enhancement from Meson-Exchange Currents Casale, P. R. Amaro, J. E. Nuclear Theory High Energy Physics - Phenomenology We investigate the role of short-range correlations (SRC) in the transverse nuclear response within the quasielastic peak region, focusing on the 1p1h channel. The calculation is performed in nuclear matter by solving the Bethe-Goldstone equation with the realistic Granada 2013 nucleon-nucleon potential, including both one-body and two-body meson-exchange currents (MEC) of seagull, pion-in-flight, and $Δ$ types. We find that MEC produce a sizable enhancement of the transverse response in the 1p1h channel when acting on correlated nucleon pairs with high-momentum components generated by SRC. This contrasts with the uncorrelated case, where MEC, dominated by the $Δ$ current, can even yield a negative effect. The results are consistent with previous findings based on the correlated basis function approach, supporting the interpretation that SRC play a central role in the transverse response enhancement from MEC. |
| title | Short-Range Correlations and Transverse Response Enhancement from Meson-Exchange Currents |
| topic | Nuclear Theory High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2510.16578 |