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arXiv · 2510.16578

Short-Range Correlations and Transverse Response Enhancement from Meson-Exchange Currents

P. R. Casale·J. E. Amaro
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Abstract

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.

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P. R. Casale, J. E. Amaro. 2025-10-18. Short-Range Correlations and Transverse Response Enhancement from Meson-Exchange Currents. https://arxiv.org/abs/2510.16578

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