D-brane instanton induced μ terms and their hierarchical structure

@article{Abe2015DbraneII,
  title={D-brane instanton induced $\mu$ terms and their hierarchical structure},
  author={Hiroyuki Abe and Tatsuo C. Kobayashi and Yoshiyuki Tatsuta and Shohei Uemura},
  journal={Physical Review D},
  year={2015},
  volume={92},
  pages={026001}
}
We study the $\ensuremath{\mu}$-term matrix of Higgs pairs induced by the D-brane instanton effects in intersecting D6-brane models compactified on ${T}^{6}$. It is found that the $\ensuremath{\mu}$-term matrix has a certain permutation symmetry and its eigenvalues have large hierarchical structure without fine-tuning. 

Figures and Tables from this paper

Majorana neutrino mass structure induced by rigid instantons on toroidal orbifold
We study effects of D-brane instantons wrapping rigid cycles on Z2*Z2' toroidal orbifold. We compute Majorana masses induced by rigid D-brane instantons and realize bimaximal mixing matrices in
Weak Gravity Conjecture as a Razor Criterium for Exotic D-brane instantons
We discuss implications of Weak gravity conjecture (WGC) for exotic D-brane instantons. In particular, WGC leads to indirect stringent bounds on non-perturbative superpotentials generated by exotic
Dynamical R-parity violations from exotic instantons
We show how R-parity can be dynamically broken by non-perturbative quantum gravity effects. In particular, in D-brane models, Exotic instantons provide a simple and calculable mechanism for the
CP-violating phase on magnetized toroidal orbifolds
A bstractWe study the CP-violating phase of the quark sector on T2/ZN (N = 2, 3, 4, 6) with non-vanishing magnetic fluxes, where properties of possible origins of the CP violation are investigated
Seesaw mechanism in magnetic compactifications
A bstractIn this paper, we explore a new avenue to a natural explanation of the observed tiny neutrino masses with a dynamical realization of the three-generation structure in the neutrino sector.
Super-light baryphotons, Weak Gravity Conjecture and Exotic instantons in Neutron-Antineutron transitions
In companion papers \cite{Addazi:2015pia,Addazi:2016rgo}, we have discussed current bounds of a new super-light baryo-photon, associated to a $U(1)_{B-L}$ gauged, from neutron-antineutron current
More about Neutron Majorana mass from Exotic Instantons: an alternative mechanism in Low-Scale String theory
We discuss an alternative for baryon-violating six quarks transition in the context of low scale string theory. In particular, with MS = 10–103 TeV, such a transition can be mediated by two
Modular symmetry by orbifolding magnetized T2 × T2: realization of double cover of ΓN
<jats:title>A<jats:sc>bstract</jats:sc> </jats:title><jats:p>We study the modular symmetry of zero-modes on <jats:inline-formula><jats:alternatives><jats:tex-math>$$
...
...

References

SHOWING 1-10 OF 28 REFERENCES
Flavor structure in D-brane models: Majorana neutrino masses
A bstractWe study the flavor structure in intersecting D-brane models. We study anomalies of the discrete flavor symmetries. We analyze the Majorana neutrino masses, which can be generated by D-brane
D-brane Instantons in Type II String Theory
We review recent progress in determining the effects of D-brane instantons in N=1 supersymmetric compactifications of Type II string theory to four dimensions. We describe the abstract D-brane
Discrete flavor symmetries in D-brane models
A bstractWe study the presence of discrete flavor symmetries in D-brane models of particle physics. By analyzing the compact extra dimensions of these models one can determine when such symmetries
Non-Abelian discrete gauge symmetries in 4d string models
A bstractWe study the realization of non-Abelian discrete gauge symmetries in 4d field theory and string theory compactifications. The underlying structure generalizes the Abelian case, and follows
Neutrino masses and mixings from string theory instantons
We study possible patterns of neutrino masses and mixings in string models in which Majorana neutrino masses are generated by a certain class of string theory instantons recently considered in the
String Theory and Particle Physics: An Introduction to String Phenomenology
String theory is one of the most active branches of theoretical physics and has the potential to provide a unified description of all known particles and interactions. This book is a systematic
Ann
Aaron Beck’s cognitive therapy model has been used repeatedly to treat depression and anxiety. The case presented here is a 34-year-old female law student with an adjustment disorder with mixed
JHEP 0503
  • 050
  • 2005
JHEP 0703
  • 052
  • 2007
...
...