Form factors of vector and axial-vector mesons in holographic D4-D8 model

被引：12

作者：

Bayona, C. A. Ballon ^{[1
]}

Boschi-Filho, Henrique ^{[2
]}

Braga, Nelson R. F. ^{[2
]}

Torres, Marcus A. C. ^{[2
]}

机构：

[1] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil

[2] Univ Fed Rio de Janeiro, Inst Fis, BR-21941972 Rio De Janeiro, RJ, Brazil

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2010年 / 01期

关键词：

Gauge-gravity correspondence; AdS-CFT Correspondence; Phenomenological Models; STRING THEORY; QCD; BARYONS;

D O I：

10.1007/JHEP01(2010)052

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：

We calculate elastic and non-elastic electromagnetic form factors for vector and axial-vector mesons in the holographic D4-D8 brane model. We obtain the mass spectrum and Regge trajectories for these particles. From the elastic form factors we extract the electric radius, the magnetic and quadrupole moments. Form factors for transverse and longitudinal polarizations are also obtained. We find superconvergence sum rules for the vector and axial-vector meson couplings that determine the asymptotic behavior of the form factors at large momentum transfer. Our results show good agreement with other holographic models and QCD.

引用

页数：18

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