The Weak Mixing Angle From TeV Scale Quark-Lepton Unification

Abstract

Unified theories based on an extended left-right symmetric group, $SU(4)\times SU(2{)}^4$, are constructed in five dimensions. The compactification scale is assumed to be only a loop factor above the weak scale, so that the weak mixing angle is predicted to be close to its tree level value of 0.239. Boundary conditions in the 5th dimension break $SU(4)\to SU(3)\times U(1{)}_{B-L}$, removing powerful constraints from $K_L\to \mu e$ while allowing a reliable calculation of the leading logarithm corrections to ${\sin }^2\theta$. The compactification scale is expected in the 1--5 TeV region, depending on how $SU(2{)}^4$ is broken. Two illustrative models are presented, and the experimental signal of the $Z^{\prime }$ gauge boson is discussed.

15 pages

References in corpus (11)

• Gauge Unification in Higher Dimensions
• Gauge Coupling Unification from Unified Theories in Higher Dimensions
• A Complete Theory of Grand Unification in Five Dimensions
• The Weak Mixing Angle from an SU(3) Symmetry at a TeV
• Spacetime structure of massive gravitino
• Left-right symmetry in 5D and neutrino mass in TeV scale gravity models
• Unification of Weak and Hypercharge Interactions at the TeV Scale
• Strong-Electroweak Unification at About 4 TeV
• Weak Mixing Angle and the SU(3)_C times SU(3) Model on M^4 times S^1/(Z_2 times Z_2')
• Constraints on the SU(3) Electroweak Model
• A Half-Composite Standard Model at a TeV and Sin^2 theta_W

Cited by in corpus (9)

• Measurement of hard double-parton interactions in W->lv+ 2 jet events at sqrt(s)=7 TeV with the ATLAS detector
• Soft Photon Radiation in Particle Decays in SHERPA
• Neutrino physics at large colliders
• Petite Unification of Quarks and Leptons: Twenty Two Years After
• Extra Dimensions at the Weak Scale and Deviations from Newtonian Gravity
• Brane world unification of quark and lepton masses and its implication for the masses of the neutrinos
• Measuring Supersymmetry with Heavy Scalars
• Early SU(4)_PS x SU(2)_L x SU(2)_R x SU(2)_H Unification of Quarks and Leptons
• Hard QCD at hadron colliders