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- W2157152011 abstract "The bound kaon approach to the strangeness in the Skyrme model is applied to investigating the possibility of deeply bound ${K}^{ensuremath{-}}mathit{pp}$ states. We describe the ${K}^{ensuremath{-}}mathit{pp}$ system as two Skyrmion, around which a kaon field fluctuates. Each Skyrmion is rotated in the space of SU(2) collective coordinate. The rotational motions are quantized to be projected onto the spin-singlet proton-proton state. We derive the equation of motion for the kaon in the background field of two Skyrmions at fixed positions. From the numerical solution of the equation of motion, it is found that the energy of ${K}^{ensuremath{-}}$ can be considerably small and that the distribution of ${K}^{ensuremath{-}}$ shows molecular nature of the ${K}^{ensuremath{-}}mathit{pp}$ system. For this deep binding, the Wess-Zumino-Witten term plays an important role. The total energy of the ${K}^{ensuremath{-}}mathit{pp}$ system is estimated in the Born-Oppenheimer approximation. The binding energy of the ${K}^{ensuremath{-}}mathit{pp}$ state is B.E. $ensuremath{simeq}126$ MeV. The mean square radius of the $mathit{pp}$ subsystem is $sqrt{ensuremath{langle}{r}_{mathit{pp}}^{2}ensuremath{rangle}}ensuremath{simeq}1.6$ fm." @default.
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- W2157152011 date "2008-05-05" @default.
- W2157152011 modified "2023-10-14" @default.
- W2157152011 title "K−ppbound states from Skyrmions" @default.
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- W2157152011 doi "https://doi.org/10.1103/physrevc.77.055202" @default.
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