The $g_{J/\psi D_s D_s}$ strong coupling constant from QCD Sum Rules

Autor:	Rodrigues, Bruno Osório, Bracco, Mirian Enriqueta, Chiapparini, Marcelo
Rok vydání:	2013
Předmět:	High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
DOI:	10.1016/j.nuclphysa.2014.06.008
Popis:	The coupling constant of the meson vertex $J/\psi D_s D_s$ is calculated using the three point correlation function within the QCD Sum Rule formalism. We have considered alternately mesons $J/\psi$ and $D_s$ off-shell together with non-perturbative contributions up to the mixed quark-gluon condensates. When extrapolated, these two different form factors give the same coupling constant for the process $g_{J/\psi D_s D_s} = 5.98^{+0.67}_{-0.58}$. Comment: 15 pages, 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1309.1637 Zobrazit plný text záznamu View this record from Arxiv