.png){kind=icon}
返回
Superpotential de-sequestering in string models
.png){kind=icon}
PRE
AI
DOI：10.1007/JHEP02(2013)018.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Non-perturbative superpotential cross-couplings between visible sector matter and Kahler moduli can lead to significant flavour-changing neutral currents in compactifications of type JIB string theory. Here, we compute corrections to Yukawa couplings in orbifold models with chiral matter localised on D3-branes and non-perturbative effects on distant D7-branes. By evaluating a threshold correction to the D7-brane gauge coupling, we determine conditions under which the non-perturbative corrections to the Yukawa couplings appear. The flavour structure of the induced Yukawa coupling generically fails to be aligned with the tree-level flavour structure. We check our results by also evaluating a correlation function of two D7-brane gauginos and a D3-brane Yukawa coupling. Finally, by calculating a string amplitude between n hidden scalars and visible matter we show how non-vanishing vacuum expectation values of distant D7-brane scalars, if present, may correct visible Yukawa couplings with a flavour structure that differs from the tree-level flavour structure.
Keyword:
Supersymmetry Breaking
Compactification and String Models
Intersecting branes models
Conformal Field Models in String Theory
期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
机构
引用论文
Asymmetric Synthesis of (S)-Vigabatrin. An Approach Using Methionine as the Chiral Pool.png)
Synlett
SynlettIF0
PREAI
分享收藏分享收藏分享收藏
查看更多内容