Split symmetries

Autor: Wilfried Buchmuller, Markus Dierigl, Fabian Ruehle, Julian Schweizer
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Physics Letters B, Vol 750, Iss C, Pp 615-619 (2015)
Druh dokumentu: article
ISSN: 0370-2693
1873-2445
DOI: 10.1016/j.physletb.2015.09.069
Popis: We consider six-dimensional supergravity with gauge group SO(10)×U(1)A, compactified on the orbifold T2/Z2. Three quark–lepton generations arise as zero modes of a bulk 16-plet due to magnetic flux of the anomalous U(1)A. Boundary conditions at the four fixed points break SO(10) to subgroups whose intersection is the Standard Model gauge group. The gauge and Higgs sector consist of “split” SO(10) multiplets. As a consequence of the U(1)A flux, squarks and sleptons are much heavier than gauge bosons, Higgs bosons, gauginos and higgsinos. We thus obtain a picture similar to “split supersymmetry”. The flavor structure of the quark and lepton mass matrices is determined by the symmetry breaking at the orbifold fixed points.
Databáze: Directory of Open Access Journals
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