| Автор | Jueping Liu |
| Автор | Dunhuan Liu |
| Дата выпуска | 1993-03-01 |
| dc.description | The effects of the leading quark mass corrections to the QCD sum rules for the 0<sup>++</sup> scalar glueball are investigated. In order to include the information from the confinement regions of QCD, the leading quark mass correction to the polarization function at Q<sup>2</sup>=0 for a renormalized group-invariant current with the quantum numbers J<sup>PT</sup>= Phi <sup>++</sup> are studied by means of the QCD low-energy theorem. For the construction of the corresponding spectral function, the authors use a 'finite-width resonance plus continuum' model in which the dynamical corrections due to the non-vanishing meson masses are taken into account. Two types of the QCD sum rules, namely the Gauss-Weierstrass finite-energy sum rules and the Laplace transform sum rule, are used to investigate the properties of the lowest 0<sup>++</sup> scalar glueball. The effects of the non-vanishing quark masses turn out to be not negligible for the determination of the glueball width; the intermediate value of the glueball mass is further confirmed by the leading quark mass correction. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The leading quark mass corrections to the QCD sum rules for the 0<sup>++</sup> scalar glueball |
| Тип | paper |
| DOI | 10.1088/0954-3899/19/3/006 |
| Electronic ISSN | 1361-6471 |
| Print ISSN | 0954-3899 |
| Журнал | Journal of Physics G: Nuclear and Particle Physics |
| Том | 19 |
| Первая страница | 373 |
| Последняя страница | 387 |
| Аффилиация | Jueping Liu; Dept. of Phys., Wuhan Univ., China |
| Аффилиация | Dunhuan Liu; Dept. of Phys., Wuhan Univ., China |
| Выпуск | 3 |
