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Title: The supersymmetric standard model from the Z6' orientifold?

Abstract

We construct N = 1 supersymmetric fractional branes on the Z6' orientifold. Intersecting stacks of such branes are needed to build a supersymmetric standard model. If a, b are the stacks that generate the SU(3)c and SU(2)L gauge particles, then, in order to obtain jthe chiral spectrum of the (supersymmetric) standard model (with non-zero Yukawa couplings to the Higgs mutiplets), it is necessary that the number of intersections a intersection b of the stacks a and b, and the number of intersections a intersection b' of a with the orientifold image b' of b satisfy (a intersection b, a intersection b') = (2, 1) or (1, 2). It is also necessary that there is no matter in symmetric representations of the gauge group. We have found a number of examples having these properties. Different lattices give different solutions and different physics.

Authors:
;  [1]
  1. Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH (United Kingdom)
Publication Date:
OSTI Identifier:
20900808
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 881; Journal Issue: 1; Conference: CICHEP II: Cairo international conference on high energy physics, Cairo (Egypt), 14-17 Jan 2006; Other Information: DOI: 10.1063/1.2435274; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHIRALITY; GAUGE INVARIANCE; HIGGS BOSONS; HIGGS MODEL; STANDARD MODEL; STRING MODELS; SU-2 GROUPS; SU-3 GROUPS; SUPERSYMMETRY; YUKAWA POTENTIAL

Citation Formats

Bailin, David, and Love, Alex. The supersymmetric standard model from the Z6' orientifold?. United States: N. p., 2007. Web. doi:10.1063/1.2435274.
Bailin, David, & Love, Alex. The supersymmetric standard model from the Z6' orientifold?. United States. doi:10.1063/1.2435274.
Bailin, David, and Love, Alex. Fri . "The supersymmetric standard model from the Z6' orientifold?". United States. doi:10.1063/1.2435274.
@article{osti_20900808,
title = {The supersymmetric standard model from the Z6' orientifold?},
author = {Bailin, David and Love, Alex},
abstractNote = {We construct N = 1 supersymmetric fractional branes on the Z6' orientifold. Intersecting stacks of such branes are needed to build a supersymmetric standard model. If a, b are the stacks that generate the SU(3)c and SU(2)L gauge particles, then, in order to obtain jthe chiral spectrum of the (supersymmetric) standard model (with non-zero Yukawa couplings to the Higgs mutiplets), it is necessary that the number of intersections a intersection b of the stacks a and b, and the number of intersections a intersection b' of a with the orientifold image b' of b satisfy (a intersection b, a intersection b') = (2, 1) or (1, 2). It is also necessary that there is no matter in symmetric representations of the gauge group. We have found a number of examples having these properties. Different lattices give different solutions and different physics.},
doi = {10.1063/1.2435274},
journal = {AIP Conference Proceedings},
number = 1,
volume = 881,
place = {United States},
year = {Fri Jan 12 00:00:00 EST 2007},
month = {Fri Jan 12 00:00:00 EST 2007}
}
  • Intersecting stacks of supersymmetric fractional branes on the Z{sub 6}{sup '} orientifold may be used to construct the supersymmetric Standard Model. We construct a four-stack model, which has the matter spectrum of the supersymmetric Standard Model, including a single pair of Higgs doublets, plus three neutrino-singlet states. However, the gauge group is SU(3){sub colour}xSU(2){sub L}xU(1){sub Y}xU(1), and there is no overall cancellation of Ramond-Ramond tadpoles.
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  • We construct a supersymmetric model based on the semisimple gauge group SU(3)[sub [ital c]][times]SU(3)[sub [ital L]][times]SU(3)[sub [ital R]] with the relation tan[beta][congruent][ital m][sub [ital t]]/[ital m][sub [ital b]] automatically arising from its structure. The model below a scale [similar to]10[sup 16] GeV naturally gives rise just to the minimal supersymmetric standard model and therefore to the presently favored values for sin[sup 2][theta][sub [ital W]] and [alpha][sub [ital s]] without fields in representations higher than the fundamental.