Ab Initio Computation of the Longitudinal Response Function in Ca40

Autor:	J. E. Sobczyk, Bijaya Acharya, Gaute Hagen, Sonia Bacca
Rok vydání:	2021
Předmět:	Physics Lorentz transformation Nuclear Theory General Physics and Astronomy Function (mathematics) State (functional analysis) Integral transform Momentum symbols.namesake Quantum mechanics Coulomb symbols Sum rule in quantum mechanics Neutrino
Zdroj:	Physical Review Letters. 127
ISSN:	1079-7114 0031-9007
Popis:	We present a consistent ab initio computation of the longitudinal response function ${R}_{L}$ in $^{40}\mathrm{Ca}$ using the coupled-cluster and Lorentz integral transform methods starting from chiral nucleon-nucleon and three-nucleon interactions. We validate our approach by comparing our results for ${R}_{L}$ in $^{4}\mathrm{He}$ and the Coulomb sum rule in $^{40}\mathrm{Ca}$ against experimental data and other calculations. For ${R}_{L}$ in $^{40}\mathrm{Ca}$ we obtain a very good agreement with experiment in the quasielastic peak up to intermediate momentum transfers, and we find that final state interactions are essential for an accurate description of the data. This work presents a milestone towards ab initio computations of neutrino-nucleus cross sections relevant for experimental long-baseline neutrino programs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8f992fece666c2071083f84fb408f160 https://doi.org/10.1103/physrevlett.127.072501 Zobrazit plný text záznamu