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Title: Vectorlike particles, Z' and Yukawa unification in F-theory inspired E 6

Abstract

We explore the low energy implications of an F-theory inspired E 6 model whose breaking yields, in addition to the MSSM gauge symmetry, a Z ' gauge boson associated with a U ( 1 ) symmetry broken at the TeV scale. The zero mode spectrum of the effective low energy theory is derived from the decomposition of the 27 and 27 ¯ representations of E 6 and we parametrise their multiplicities in terms of a minimum number of flux parameters. We perform a two-loop renormalisation group analysis of the gauge and Yukawa couplings of the effective theory model and estimate lower bounds on the new vectorlike particles predicted in the model. We compute the third generation Yukawa couplings in an F-theory context assuming an E 8 point of enhancement and express our results in terms of the local flux densities associated with the gauge symmetry breaking. We find that their values are compatible with the ones computed by the renormalisation group equations, and we identify points in the parameter space of the flux densities where the t - b - τ Yukawa couplings unify.

Authors:
 [1];  [1];  [2]
  1. Univ. of Ioannina (Greece). Physics Dept.
  2. Univ. of Delaware, Newark, DE (United States). Bartol Research Inst. Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Univ. of Delaware, Newark, DE (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1417403
Alternate Identifier(s):
OSTI ID: 1499145
Grant/Contract Number:  
SC0013880
Resource Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 778; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Karozas, Athanasios, Leontaris, George K., and Shafi, Qaisar. Vectorlike particles, Z' and Yukawa unification in F-theory inspired E6. United States: N. p., 2018. Web. doi:10.1016/j.physletb.2018.01.032.
Karozas, Athanasios, Leontaris, George K., & Shafi, Qaisar. Vectorlike particles, Z' and Yukawa unification in F-theory inspired E6. United States. doi:10.1016/j.physletb.2018.01.032.
Karozas, Athanasios, Leontaris, George K., and Shafi, Qaisar. Thu . "Vectorlike particles, Z' and Yukawa unification in F-theory inspired E6". United States. doi:10.1016/j.physletb.2018.01.032.
@article{osti_1417403,
title = {Vectorlike particles, Z' and Yukawa unification in F-theory inspired E6},
author = {Karozas, Athanasios and Leontaris, George K. and Shafi, Qaisar},
abstractNote = {We explore the low energy implications of an F-theory inspired E6 model whose breaking yields, in addition to the MSSM gauge symmetry, a Z' gauge boson associated with a U(1) symmetry broken at the TeV scale. The zero mode spectrum of the effective low energy theory is derived from the decomposition of the 27 and 27¯ representations of E6 and we parametrise their multiplicities in terms of a minimum number of flux parameters. We perform a two-loop renormalisation group analysis of the gauge and Yukawa couplings of the effective theory model and estimate lower bounds on the new vectorlike particles predicted in the model. We compute the third generation Yukawa couplings in an F-theory context assuming an E8 point of enhancement and express our results in terms of the local flux densities associated with the gauge symmetry breaking. We find that their values are compatible with the ones computed by the renormalisation group equations, and we identify points in the parameter space of the flux densities where the t-b-τ Yukawa couplings unify.},
doi = {10.1016/j.physletb.2018.01.032},
journal = {Physics Letters. Section B},
number = ,
volume = 778,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1016/j.physletb.2018.01.032

Citation Metrics:
Cited by: 1 work
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Figures / Tables:

Table 1 Table 1: 27 of $E$6 and its $S O$ (10) and $SU$ (5) decompositions and $Q$ $ψ,N,η$ charges.

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