Abstract
We present a [FORMULA: SEE TEXT] orbifold compactification of the E8xE8 heterotic string which leads to the (supersymmetric) standard model gauge group and matter content. The quarks and leptons appear as three 16-plets of SO(10), whereas the Higgs fields do not form complete SO(10) multiplets. The model has large vacuum degeneracy. For generic vacua, no exotic states appear at low energies and the model is consistent with gauge coupling unification. The top quark Yukawa coupling arises from gauge interactions and is of the order of the gauge couplings, whereas the other Yukawa couplings are suppressed.
Highlights
The problem of ultraviolet completion of the Standard Model (SM) has been a long– standing issue in particle physics
The purpose of this Letter is to show that these difficulties can be overcome in the well known weakly coupled heterotic string [1] compactified on an orbifold [2, 3]
In the light cone gauge the heterotic string can be described by the following bosonic world sheet fields: 8 string coordinates Xi, i = 1 . . . 8, 16 internal left-moving coordinates XI, I = 1 . . . 16, and 4 right-moving fields φi, i = 1 . . . 4, which correspond to the bosonized Neveu
Summary
The problem of ultraviolet completion of the (supersymmetric) Standard Model (SM) has been a long– standing issue in particle physics. Local gauge symmetry at the origin is SO(10) × SO(4) × U(1) and the twisted matter at this point is a 16–plet of SO(10) plus SO(10)-singlets. Choosing all the singlet VEVs of order the string scale, the U(1) gauge bosons are decoupled, and we have
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
