Standard-like models from intersecting D5-branes
نویسندگان
چکیده
منابع مشابه
Standard-like Models from Intersecting D5-branes
We construct intersecting D5-brane orbifold models that yield the (non-supersymmetric) standard model up to vector-like matter and charged-singlet scalars. The models are constrained by the requirement that twisted tadpoles cancel, and that the gauge boson coupled to the weak hypercharge U(1)Y does not get a string-scale mass via a generalised Green-Schwarz mechanism. Gauge coupling constant ra...
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Recently a class of Type IIA orientifold models was constructed yielding just the fermions of the SM at the intersections of D6-branes wrapping a 6-torus. We generalize that construction to the case of Type IIB compactified on an orientifold of T × (C/ZN) with D5-branes intersecting at angles on T. We construct explicit models in which the massless fermion spectrum is just the one of a three-ge...
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I describe the main features of new intersecting D4and D5-brane orbifold models that yield the non-supersymmetric standard model, up to vector-like matter and, in some cases, extra U(1) factors in the gauge group. There are six-stack D4-brane models that have charged-singlet scalar tachyons and which either contain all of the Yukawa couplings to the tachyonic Higgs doublets that are needed to g...
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Intersecting Dp-branes are useful tools to obtain chiral fermions existing on their intersections 1). Although configurations of type IIB D6-branes wrapped on T6 give rise to just the matter contents of standard model2), the D6-brane models do not explain the fine-tuning problem caused by its breakdown of supersymmetry. On the other hand, using D4-/D5-branes wrapped on T2d ×R/ZN avoids the diff...
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We construct eight-stack intersecting D5-brane models, with an orbifold transverse space, that yield the (non-supersymmetric) standard model up to vector-like leptons. The matter includes right-chiral neutrinos and the models have the renormalisable Yukawa couplings to tachyonic Higgs doublets needed to generate mass terms for all matter, including the vector-like leptons. The models are constr...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2003
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(02)03190-8