Quarklepton symmetry in five dimensions
Abstract
We construct a complete five dimensional quarklepton symmetric model, with all fields propagating in the bulk. The extra dimension forms an S{sup 1}/Z{sub 2}xZ{sub 2}{sup '} orbifold with the zero mode fermions corresponding to standard model quarks localized at one fixed point. Zero modes corresponding to left (right)chiral leptons are localized at (near) the other fixed point. This localization pattern is motivated by the symmetries of the model. Shifting the righthanded neutrinos and charged leptons slightly from the fixed point provides a new mechanism for understanding the absence of relations of the type m{sub e}=m{sub u} or m{sub e}=m{sub d} in quarklepton symmetric models. Flavor changing neutral currents resulting from KaluzaKlein gluon exchange, which typically arise in the quark sector of split fermion models, are suppressed due to the localization of quarks at one point. The separation of quarks and leptons in the compact extra dimension also acts to suppress the proton decay rate. This permits the extra dimension to be much larger than that obtained in a previous construct, with the bound 1/R > or approx. 30 TeV obtained.
 Authors:
 School of Physics, Research Centre for High Energy Physics, University of Melbourne, Victoria, 3010 (Australia)
 Publication Date:
 OSTI Identifier:
 21011111
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevD.75.045018; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHIRALITY; GLUONS; KALUZAKLEIN THEORY; MANYDIMENSIONAL CALCULATIONS; NEUTRAL CURRENTS; NEUTRINOS; PROTONS; QUARKS; STANDARD MODEL; SYMMETRY; TEV RANGE
Citation Formats
Coulthurst, A., McDonald, K. L., and McKellar, B. H. J. Quarklepton symmetry in five dimensions. United States: N. p., 2007.
Web. doi:10.1103/PHYSREVD.75.045018.
Coulthurst, A., McDonald, K. L., & McKellar, B. H. J. Quarklepton symmetry in five dimensions. United States. doi:10.1103/PHYSREVD.75.045018.
Coulthurst, A., McDonald, K. L., and McKellar, B. H. J. Thu .
"Quarklepton symmetry in five dimensions". United States.
doi:10.1103/PHYSREVD.75.045018.
@article{osti_21011111,
title = {Quarklepton symmetry in five dimensions},
author = {Coulthurst, A. and McDonald, K. L. and McKellar, B. H. J.},
abstractNote = {We construct a complete five dimensional quarklepton symmetric model, with all fields propagating in the bulk. The extra dimension forms an S{sup 1}/Z{sub 2}xZ{sub 2}{sup '} orbifold with the zero mode fermions corresponding to standard model quarks localized at one fixed point. Zero modes corresponding to left (right)chiral leptons are localized at (near) the other fixed point. This localization pattern is motivated by the symmetries of the model. Shifting the righthanded neutrinos and charged leptons slightly from the fixed point provides a new mechanism for understanding the absence of relations of the type m{sub e}=m{sub u} or m{sub e}=m{sub d} in quarklepton symmetric models. Flavor changing neutral currents resulting from KaluzaKlein gluon exchange, which typically arise in the quark sector of split fermion models, are suppressed due to the localization of quarks at one point. The separation of quarks and leptons in the compact extra dimension also acts to suppress the proton decay rate. This permits the extra dimension to be much larger than that obtained in a previous construct, with the bound 1/R > or approx. 30 TeV obtained.},
doi = {10.1103/PHYSREVD.75.045018},
journal = {Physical Review. D, Particles Fields},
number = 4,
volume = 75,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}

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