Light-Cone Sum Rule Approach for Baryon Form Factors

被引:0
|
作者
Offen, Nils [1 ]
机构
[1] Univ Regensburg, Fak Phys, D-93040 Regensburg, Germany
关键词
ASYMPTOTIC-BEHAVIOR; EXCLUSIVE PROCESSES; EVOLUTION-EQUATIONS; OPERATORS;
D O I
10.1007/s00601-016-1135-8
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present the state-of-the-art of the light-cone sum rule approach to Baryon form factors. The essence of this approach is that soft Feynman contributions are calculated in terms of small transverse distance quantities using dispersion relations and duality. The form factors are thus expressed in terms of nucleon wave functions at small transverse separations, called distribution amplitudes, without any additional parameters. The distribution amplitudes, therefore, can be extracted from the comparison with the experimental data on form factors and compared to the results of lattice QCD simulations.
引用
收藏
页码:975 / 983
页数:9
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