학술논문
The $D_sDK^*$ vertex in QCD Sum Rules: form factors and coupling constant
Document Type
Working Paper
Source
Braz J Phys 52, 12 (2022)
Subject
Language
Abstract
In this work we study the meson vertex $D_sDK^*$ using the QCD sum rules. We compute the three point correlation functions for the three cases of different off-shell mesons. The form factors for each case are fitted to the numerical calculation of the correlation functions and the coupling constant of the vertex is obtained by comparing the form factors at their respective off-shell meson pole. The result obtained for the coupling constant is $g_{D_sDK^*} = 2.29^{+0.65}_{-0.41}$.
Comment: 21 pages, 5 figures
Comment: 21 pages, 5 figures