14th Conference on the Intersections of Particle and Nuclear Physics (CIPANP 2022)

Suppression of quasielastic electron scattering cross sections at small q and extraction of the Coulomb Sum Rule

Sep 3, 2022, 4:35 PM

20m

Camelia/Dogwood

Parallel session talk Nuclear Forces and Structure, NN Correlations, and Medium Effects NN: Nuclear Forces and Structure, NN Correlations, and Medium Effects

Speaker

Arie Bodek (University of Rochester)

Description

We perform a universal fit to all available electron scattering data on Carbon and Oxygen and extract the best determination of the Inelastic Coulomb Sum Rule (CSR) as a function of momentum transfer q. The longitudinal Quasielastic (QE) cross section is suppressed by a larger factor then expected from Pauli blocking only. We provide a parameterization of this “extra suppression” for use in electron and neutrino Monte Carlo generators. The contribution of nuclear excitations to CSR as a function of q can be as high as 30% and must be accounted for . The extracted CSR values for Carbon are in good agreement with the “first principle Green’s function MC” calculation of Lavato et al. Phys. Rev. Lett. 117, 082501 (2016). The extracted CSR values for Oxygen are in agreement with the Coupled Custer calculation of J. E. Sobczyk et al. .Phys. ReV. C 102, 064312 (2020))