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• W4387452929 abstract "Neutron scattering off neutron halos can provide important information about the internal structure of nuclei close to the neutron drip line. In this work, we use halo effective field theory to study the $s$-wave scattering of a neutron and the spin-parity ${J}^{P}={frac{1}{2}}^{+}$ one-neutron halo nuclei $^{11}mathrm{Be}, ^{15}mathrm{C}$, and $^{19}mathrm{C}$ at leading order. In the $J=1$ channel, the only inputs to the Faddeev equations are their one-neutron separation energies. In the $J=0$ channel, the neutron-neutron scattering length and the two-neutron separation energies of $^{12}mathrm{Be}, ^{16}mathrm{C}$, and $^{20}mathrm{C}$ enter as well. The numerical results show that the total $s$-wave cross sections in the $J=1$ channel at threshold are of the order of a few barns. In the $J=0$ channel, these cross sections are of the order of a few barns for $ntext{ensuremath{-}}^{11}mathrm{Be}$ and $ntext{ensuremath{-}}^{19}mathrm{C}$ scattering, and about 60 $mathrm{mb}$ for the $ntext{ensuremath{-}}^{15}mathrm{C}$ scattering. The appearance of a pole in $pcotensuremath{delta}$ close to zero in all three cases indicates the existence of a virtual Efimov state close to threshold in each of the $^{12}mathrm{Be}, ^{16}mathrm{C}$, and $^{20}mathrm{C}$ systems. Observation of this pole would confirm the presence of Efimov physics in halo nuclei. The dependence of the results on the neutron-core scattering length is also studied." @default.
• W4387452929 created "2023-10-10" @default.
• W4387452929 creator A5014771557 @default.
• W4387452929 creator A5037846183 @default.
• W4387452929 creator A5063845753 @default.
• W4387452929 creator A5067593736 @default.
• W4387452929 date "2023-10-09" @default.
• W4387452929 modified "2023-10-15" @default.
• W4387452929 title "Neutron scattering off one-neutron halo nuclei in halo effective field theory" @default.
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• W4387452929 doi "https://doi.org/10.1103/physrevc.108.044304" @default.
• W4387452929 hasPublicationYear "2023" @default.
• W4387452929 type Work @default.

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