(B)over-bars → f0(980) form factors and the width effect from light-cone sum rules

被引：0

作者：

Cheng, Shan ^{[1
]}

Shen, Jian-Ming ^{[1
]}

机构：

[1] Hunan Univ, Sch Phys & Elect, Changsha 410082, Hunan, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL C | 2020年 / 80卷 / 06期

基金：

美国国家科学基金会;

关键词：

MULTIQUARK HADRONS; QUANTUM CHROMODYNAMICS; MIXING ANGLE; QCD; MESONS; DECAYS; SCALAR; SCATTERING; VECTOR; J/PSI;

D O I：

10.1140/epjc/s10052-020-8124-2

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

In this paper we calculate the (B) over bar (s) -> f(0)(980) form factors from light-cone sum rules with B meson DAs. With adopting the quark-antiquark configuration of light scalar mesons, the high twist two-particle and the threeparticle contributions are found to be similar to 25% individual, and totally they give about 50% correction to certain form factors in the considered energy regions. We further explore the lightcone sum rules approach to study the S-wave (B) over bar (s) -> KK form factors, the f(0) + f(0)' + f(0)'' resonance model is proposed and the result shows that the background effect from f(0)' + f(0)'' accounts similar to 5%. As a by-product, we extract the strong coupling vertical bar g f(0)KK vertical bar = 1.08(-0.14)(+0.05) GeV with taking the (B) over bar (s) -> f(0)(980) form factors calculated previous under the narrow width approximation.

引用

页数：16

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