$K^{+}$-nucleus elastic scattering revisited from perspective of partial restoration of chiral symmetry

Abstract

The $K^{+}$ meson properties in the nuclear medium are investigated by considering the wavefunction renormalization as a first step to reveal the in-medium properties of the $K^{+}$ meson in the context of partial restoration of chiral symmetry. The $K^{+}N$ elastic scattering amplitude is constructed using chiral perturbation theory up to the next-to-leading order. Using the constructed amplitude, we calculate the wavefunction renormalization in the Thomas-Fermi approximation. We obtained a good description of the $K^{+}N$ elastic scattering amplitude. The obtained wavefunction renormalization factor suggests the 2 to 6% enhancement of the $K^{+}N$ interaction at the saturation density. We conclude that the wavefunction renormalization could be one of the important medium effects for the $K^{+}$ meson.

References in corpus (7)

• In-medium nuclear interactions of low-energy hadrons
• Origin of resonances in the chiral unitary approach
• In-medium Pion and Partial Restoration of Chiral Symmetry
• Study of exotic hadrons in S-wave scatterings induced by chiral interaction in the flavor symmetric limit
• Exotic hadrons in s-wave chiral dynamics
• $K^{+}$-nucleus potentials from $K^{+}$-nucleon amplitudes
• Mesons in Nuclei and Partial Restoration of Chiral Symmetry

Cited by in corpus (3)

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• $K^{-}d\to \pi \Lambda N$ reaction with in-flight kaons for studying the $\Lambda N$ interaction
• A new combined analysis of elastic and charge exchange $KN(\bar{K}N)$ scatterings in the Regge realm