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On fermion mass hirerachies in MSSM-like quiver models with stringy corrections

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Belhaj A., Benhamza M., Ennadifi S., Nassiri S., Saidi H.
Open Physics
|
2011
|
vol. 9
|
issue 6
1458-1464
EN
Using instanton effects, we discuss the problem of fermion mass hierarchies in an MSSM-like Type IIA orientifolded model with U(3) × Sp(1) × U(1) × U(1) gauge symmetry obtained from intersecting D6-branes. In the corresponding four-stack quiver, the different scales of the generated superpotential couplings offer a partial solution to fermion mass hierarchies. Using the known data with neutrino masses $$m_{v_\tau } \lesssim 2 eV$$ , we give the magnitudes of the relevant scales.
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