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arXiv · 1605.00248

Electromagnetic response of 12C: a first-principles calculation

A. Lovato·S. Gandolfi·J. Carlson·Steven C. Pieper·R. Schiavilla
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Abstract

The longitudinal and transverse electromagnetic response functions of $^{12}$C are computed in a "first-principles" Green's function Monte Carlo calculation, based on realistic two- and three-nucleon interactions and associated one- and two-body currents. We find excellent agreement between theory and experiment and, in particular, no evidence for the quenching of measured versus calculated longitudinal response. This is further corroborated by a re-analysis of the Coulomb sum rule, in which the contributions from the low-lying $J^π\,$=$\, 2^+$, $0^+_2$ (Hoyle), and $4^+$ states in $^{12}$C are accounted for explicitly in evaluating the total inelastic strength.

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A. Lovato, S. Gandolfi, J. Carlson, Steven C. Pieper, R. Schiavilla. 2016-05-01. Electromagnetic response of 12C: a first-principles calculation. https://doi.org/10.1103/physrevlett.117.082501

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