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arXiv · 2501.15121

Study on the Distribution Amplitude of the Scalar Meson $K_0^*(1430)$

Chen Wang·Yuanyuan Ma·Zhijun Wang·Yanjun Sun
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Abstract

Based on sum rules, we explore the twist-2 distribution amplitude of the $K_0^*(1430)$ meson, treating it as the ground state of a quark-antiquark system. We posit that the spacetime distance $x$ should be infinitesimally close to the quark separation $ z$. By incorporating quark distance corrections, with $x^2 \approx z^2 \approx x z$, the calculated moments yield additional insights. Moreover, we employ light-cone sum rules to compute the form factors for the semi-leptonic decay process $B_s \rightarrow K$. The reliability of the computed distribution amplitude is confirmed through its comparison with the form factor.

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Chen Wang, Yuanyuan Ma, Zhijun Wang, Yanjun Sun. 2025-01-25. Study on the Distribution Amplitude of the Scalar Meson $K_0^*(1430)$. https://arxiv.org/abs/2501.15121

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