Two-photon annihilation into octet meson pairs: Symmetry relations in the handbag approach

被引：17
|
作者：
Diehl, M. [1 ]
Kroll, P. [2 ,3 ]
机构：
[1] Deutsch Elekronen Synchroton DESY, D-22603 Hamburg, Germany
[2] Univ Wuppertal, Fachbereich Phys, D-42097 Wuppertal, Germany
[3] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany
来源：
PHYSICS LETTERS B | 2010年 / 683卷 / 2-3期
关键词：
QUANTUM CHROMODYNAMICS; PION; ENERGIES; GAMMA; KK;
D O I：
10.1016/j.physletb.2009.12.009
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We explore the implications of SU(3) flavor symmetry in the soft handbag mechanism for two-photon annihilation into pairs of pseudoscalar octet mesons. In this approach we obtain a good description of the experimental results for all measured channels at high energy, with two complex form factors adjusted to the data. We also predict the cross section for gamma gamma -> eta eta. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：165 / 171
页数：7
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