Radiative vertex V Pγ and η-η′ mixing in light-cone sum rules

被引：0

作者：

Hou, Jian-Mei ^{[1
]}

Du, Chang-Qiao ^{[1
]}

Chen, Hong ^{[1
]}

Zhou, Ming-Zhen ^{[1
]}

机构：

[1] Southwest Univ, Sch Phys Sci & Technol, Chongqing 400715, Peoples R China

来源：

PHYSICS LETTERS B | 2011年 / 696卷 / 1-2期

关键词：

Radiative decay; Mixing angle; Double Borel transformation; Light-cone sum rules; EXCLUSIVE PROCESSES; FORM-FACTORS; DISTRIBUTION AMPLITUDES; QUANTUM CHROMODYNAMICS; PSEUDOSCALAR MESONS; EVOLUTION-EQUATIONS; DECAY; ANGLE; PION;

D O I：

10.1016/j.physletb.2010.12.002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this work, we calculate radiative vertex V P gamma (V = phi, omega, rho and P = eta, eta') by utilizing omega-phi. mixing scheme and taking into account the contributions of the three-particle twist-4 distribution amplitudes of the photon in QCD sum rules on light cone. According to experimental data of V -> P gamma and P -> P gamma from PDG, a value of the eta-eta' mixing angle, phi = (40.9 +/- 0.5 degrees), is extracted in the framework of the quark-flavor basis to describe the eta-eta' system. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：51 / 57

页数：7

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