Higgs--Matter splitting in quasi-realistic orbifold string GUTs



Faraggi, Alon E
(2007) Higgs--Matter splitting in quasi-realistic orbifold string GUTs. The European Physical Journal C - Particles and Fields, 49 (3). 803 - 813.

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Abstract

E6 grand unification combines the Standard Model matter and Higgs states in the single 27 representation. I discuss how the E6 structure underlies the quasi-realistic free fermion heterotic-string models. E6 -> SO(10) X U(1) breaking is obtained by a GSO phase in the N=1 partition function. The equivalence of this symmetry breaking phase with a particular choice of a boundary condition basis vector, which is used in the quasi-realistic models, is demonstrated in several cases. As a result matter states in the spinorial 16 representation of SO(10) arise from the twisted sectors, whereas the Higgs states arise from the untwisted sector. Possible additional phenomenological implications of this E6 symmetry breaking pattern are discussed.

Item Type: Article
Additional Information: LTH 656; arXiv Number: arXiv:hep-th/0507229v4. Published online: 9 December 2006. Issue: February, 2007.
Uncontrolled Keywords: STANDARD-LIKE MODELS, SUPERSTRING DERIVED MODELS, X Z(2) ORBIFOLDS, 4-DIMENSIONAL SUPERSTRINGS, SUPERSYMMETRY BREAKING, FERMIONIC MODELS, PROTON STABILITY, FLAT DIRECTIONS, ANOMALOUS U(1), 3 GENERATIONS
Subjects: ?? QC ??
Divisions: Faculty of Science and Engineering > School of Physical Sciences > Mathematical Sciences
Depositing User: Symplectic Admin
Date Deposited: 28 Oct 2009 12:52
Last Modified: 26 Apr 2022 10:38
DOI: 10.1140/epjc/s10052-006-0160-z
Publisher's Statement : The original publication is available at www.eurphysj.org.
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/414