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arXiv · 1710.02730

Average CsI neutron density distribution from COHERENT data

M. Cadeddu·C. Giunti·Y. F. Li·Y. Y. Zhang
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Abstract

Using the coherent elastic neutrino-nucleus scattering data of the COHERENT experiment, we determine for the first time the average neutron rms radius of $^{133}\text{Cs}$ and $^{127}\text{I}$. We obtain the practically model-independent value $ R_{n} = 5.5 {}^{+0.9}_{-1.1} \, \text{fm} $ using the symmetrized Fermi and Helm form factors. We also point out that the COHERENT data show a $2.3\sigma$ evidence of the nuclear structure suppression of the full coherence.

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M. Cadeddu, C. Giunti, Y. F. Li, Y. Y. Zhang. 2017-10-07. Average CsI neutron density distribution from COHERENT data. https://doi.org/10.1103/physrevlett.120.072501

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