# $Qar{s}^{*}ar{Q}s^{*}$ molecular states from QCD sum rules: a view on Y4140 - High Energy Physics - Phenomenology

$Qar{s}^{*}ar{Q}s^{*}$ molecular states from QCD sum rules: a view on Y4140 - High Energy Physics - Phenomenology - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: Masses for the $Q\bar{s}^{*}\bar{Q}s^{*}$ $Q=c$ or $b$ molecularstates are systematically computed in the framework of QCD sum rules.Technically, contributions of the operators up to dimension six are included inoperator product expansion OPE. The numerical result $4.13\pm0.10 {GeV}$ for$D {s}^{*}\bar{D} {s}^{*}$ agrees well with the mass $4143.0\pm2.9\pm1.2 {MeV}$for Y4140, which supports the $D {s}^{*}\bar{D} {s}^{*}$ molecularconfiguration for Y4140.

Autor: Jian-Rong Zhang, Ming-Qiu Huang

Fuente: https://arxiv.org/