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arXiv · 1708.03369

Universal physics of the few-body system of two neutrons and one flavored meson

Udit Raha·Yuki Kamiya·Shung-Ichi Ando·Tetsuo Hyodo
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Abstract

We investigate the $s$-wave three-body system of two neutrons and one flavored meson with total spin-isospin $J=0,I=3/2$. The meson-neutron scattering length can become infinitely large in an unphysical region of the quark mass when extrapolated from strangeness to charm in the so-called zero coupling limit. Using a low-energy cluster effective field theory, we demonstrate that the Efimov effect is manifest in the three-body system when the meson-neutron scattering length is extrapolated to the unitary limit of the two-body interaction. We thereby discuss the consequence of universal physics in the physical $K^{-}nn$ and $D^{0}nn$ systems.

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Udit Raha, Yuki Kamiya, Shung-Ichi Ando, Tetsuo Hyodo. 2018-09-07. Universal physics of the few-body system of two neutrons and one flavored meson. https://doi.org/10.1103/physrevc.98.034002

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