ERRATUM: "THE SU(2) ⊗ U(1) ELECTROWEAK MODEL BASED ON THE NONLINEARLY REALIZED GAUGE GROUP"

2012 ◽  
Vol 27 (07) ◽  
pp. 1292004 ◽  
Author(s):  
D. BETTINELLI ◽  
R. FERRARI ◽  
A. QUADRI
2010 ◽  
Author(s):  
Andrea Quadri ◽  
Ruggero Ferrari ◽  
Daniele Bettinelli

2010 ◽  
Author(s):  
Andrea Quadri ◽  
Daniele Bettinelli ◽  
Ruggero Ferrari

2010 ◽  
Author(s):  
Andrea Quadri ◽  
Ruggero Ferrari ◽  
Daniele Bettinelli

2007 ◽  
Vol 22 (06) ◽  
pp. 435-447 ◽  
Author(s):  
WILLIAM A. PONCE ◽  
LUIS A. SÁNCHEZ

We carry out a systematic study of possible extensions of the standard model based on the gauge group SU (3)c⊗ SU (4)L⊗ U (1)X. We consider models with particles having exotic electric charges and also models which do not contain exotic electric charges in the gauge boson sector or in the fermion sector. For the first case an infinite number of models can, in principle, be constructed, while the restriction to non-exotic electric charges only allows for eight different anomaly-free models. Four of them are three-family models in the sense that anomalies cancel by an interplay between the three families, and another two are one-family models where anomalies cancel family by family as in the standard model. The remaining two are two-family models.


2000 ◽  
Vol 15 (19) ◽  
pp. 1221-1225 ◽  
Author(s):  
G. B. TUPPER ◽  
R. J. LINDEBAUM ◽  
R. D. VIOLLIER

We examine the phenomenology of a low-energy extension of the Standard Model, based on the gauge group SU (3) ⊗ SU (2) ⊗ U (1)⊗ SO (3), with SO(3) operating in the shadow sector. This model offers vacuum νe → νs and νμ → ντ oscillations as the solution of the solar and atmospheric neutrino problems, and it provides a neutral heavy shadow lepton X that takes the role of a cold dark matter particle.


1998 ◽  
Vol 13 (29) ◽  
pp. 2355-2360 ◽  
Author(s):  
HOANG NGOC LONG ◽  
PALASH B. PAL

We construct the supersymmetric version of a model based on the gauge group SU(3) c× SU(3) L× U(1) . We discuss the mechanism of baryon number violation which induces nucleon decay, and derive bounds on the relevant couplings. We point out a new mechanism for nucleon decay which can also appear in R-violating MSSM.


1992 ◽  
Vol 07 (31) ◽  
pp. 7741-7752 ◽  
Author(s):  
CHRISTINE BERTRAND ◽  
RICHARD KERNER ◽  
SALVATORE MIGNEMI

In a paper1 published in 1979 Manton has derived the bosonic sector of the Weinberg-Salam electroweak model by considering the Yang-Mills Lagrangian on a six-dimensional space M4×S2. The model turned out to be very rigid and identified the Weinberg angle with the angle between two neighbor roots in the Cartan diagram of the gauge group. leading to θW=60° for SU(3), θW=45° for O(5) and θW=30° for G2 and to the equality of the masses of the Z particle and of the Higgs boson. We generalize this model by identifying the Yang-Mills Lagrangian with a part of the Einstein-Hilbert Lagrangian on the fibre bundle P(M4×S2), and by adding to it a Gauss-Bonnet invariant. which produces new terms, quartic and cubic in Fμν. This in turn modifies the definition of the Weinberg angle and the Higgs mass. The new free parameter is the dimensional factor in front of the Gauss-Bonnet term. We discuss the values of MW, MZ and MH in function of this parameter and the radii of the internal space S2 of the gauge group G. Realistic values can be obtained if the Gauss-Bonnet term contributes to the Lagrangian with a negative sign.


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