The nonet of the light scalar tetraquarks: The mesons a0(980) and K0*(800)

被引：12
作者：
Agaev, S. S. [1 ]
Azizi, K. [2 ]
Sundu, H. [3 ]
机构：
[1] Baku State Univ, Inst Phys Problems, AZ-1148 Baku, Azerbaijan
[2] Dogus Univ, Dept Phys, TR-34722 Istanbul, Turkey
[3] Kocaeli Univ, Dept Phys, TR-41380 Izmit, Turkey
来源：
PHYSICS LETTERS B | 2019年 / 789卷
关键词：
MULTIQUARK HADRONS; QCD; F(0)(980); COUPLINGS;
D O I：
10.1016/j.physletb.2018.12.059
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The spectroscopic parameters and partial decay widths of the light mesons a(0)(980) and K-0*(800) are calculated by treating them as scalar diquark-antidiquark states. The masses and couplings of the mesons are found in the framework of QCD two-point sum rule approach. The widths of the decay channels a(o)(980) -> eta pi and a(0)(980) -> K (K) over bar, and K-0*(800) -> K+pi(-) and K-0*(800) -> K-0 pi(0) are evaluated using QCD sum rules on the light-cone and technical tools of the soft meson approximation. Our results for the mass of the mesons m(ao) = 991(-27)(+29) MeV and m(K)* = 767(-29)(+38) MeV, as well as their total width Gamma(a0) = 62.01 +/- 14.37 MeV and Gamma K-0* = 401.1 +/- 87.1 MeV are compared with last experimental data. (C) 2018 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license.
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页码：405 / 412
页数：8
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