RT Journal Article
T1 Microscopic calculation of two-particle-two-hole meson-exchange currents in 40Ar and asymmetric scaling properties for neutrino and electron scattering
A1 Martínez Consentino, Víctor Leopoldo
A1 Segovia González, Jorge
A1 Amaro Soriano, José Enrique
AB We present a microscopic calculation of two-particle–two-hole meson-exchange current response functions in asymmetric nuclei, with particular emphasis on the 40Ar nucleus. Employing a relativistic mean-field and relativistic Fermi gas framework, we compute the nuclear response for 40Ar and compare it with that of the symmetric 40Ca nucleus, analyzing the role of proton-neutron imbalance. The model incorporates distinct proton and neutron Fermi momenta to accurately capture the nuclear dynamics of systems with Z ≠ N. Our results indicate that using 40Ca as a proxy for 40Ar leads to a systematic error of approximately 10%. Additionally, we propose an asymmetric scaling formula to obtain the two-particle–two-hole response for arbitrary nuclei from the 12C response, improving the description of asymmetric nuclei. Finally, we benchmark our predictions against inclusive electron scattering and neutrino cross sections.
PB American Physical Society
SN 2470-0010
SN 2470-0029 (electrónico)
YR 2025
FD 2025
LK https://hdl.handle.net/10272/27988
UL https://hdl.handle.net/10272/27988
LA eng
NO Martinez-Consentino, V. L., Segovia, J., & Amaro, J. E. (2025). Microscopic calculation of two-particle-two-hole meson-exchange currents in 40Ar and asymmetric scaling properties for neutrino and electron scattering. Physical Review D, 112(11). https://doi.org/10.1103/sp1t-j8yy
NO The work was supported by Grant No. PID2023-147072NB-I00 funded by MICIU/AEI/10.13039/501100011033 and by ERDF/EU; by Grant No. FQM-225 funded by Junta de Andalucia. V. L.M.-C. acknowledges financial support provided by Ministerio Español de Ciencia, Innovación y Universidades under Grant No. PID2022-140440NBC22; Junta de Andalucía under Contracts No. PAIDI FQM- 370 and No. PCI+D+i under the title: “Tecnologías avanzadas para la exploración del universo y sus componentes” (Code No. AST22-0001).
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026