Eur.Phys.J.C48:229-241,2006 The R-symmetry formalism is applied for the supersymmetric SU(3)_C X SU(3)_L
X U(1)_X (3-3-1) model with right-handed neutrinos. For this kind of models, we
study ...generalization of the MSSM relation among R-parity, spin and
matter-parity. Discrete symmetries for the proton stable in this model are
imposed, and we show that in such a case it is able to give leptons masses at
only the tree level contributions required. A simple mechanism for the mass
generation of the neutrinos is explored. We show that at the low-energy
effective theory, neutrino spectrum contains three Dirac fermions, one massless
and two degenerate in mass. At the energy-level where the mixing among them
with neutralinos turned on, neutrinos obtain Majorana masses and correct the
low-energy effective result which naturally gives rise to an inverted hierarchy
mass pattern. This mass spectrum can fit the current data with minor
fine-tuning. Consistent values for masses of the charged leptons are also
given. In this model, the MSSM neutralinos and charginos can be explicitly
identified in terms of the new constraints on masses which is not as in a
supersymmetric version of the minimal 3-3-1 model.
We consider generalizations of the standard model (SM) which are based on the gauge symmetry \(SU(n)_c\otimes SU(m)_L\otimes U(1)_N\). Although the most interesting possibilities occur when \(n=3\), ...we will consider also the cases \(n=4,5\) both with \(m=3,4\). Models with left-right symmetry, horizontal symmetries and the possible embedding in a larger group (grand unification scenarios) are briefly discussed.
We investigate a scalar sector of the supersymmetric $ SU_C(3) \otimes
SU_L(3)\otimes U_N(1)$ model with right-handed neutrinos. The mass spectra are
derived. We show that only neutral Higgs sector ...with lepton number L=0 could
have a VEV. There is no mixing between scalars having L=0 and bilepton scalars
having L=2. There are six Goldstone bosons: two in neutral sector, three in
pseudo-scalar sector and one in charged scalar sector. For a given set of input
parameters (five from the $F$ terms and two from the soft term) all the scalar
sectors in this model contain the upper limit of 230 GeV to the mass of the
lightest scalar, which are in agreement with the lower limit of the SM Higgs
boson obtained by LEP.
Through cognitive radio (CR), unlicensed users can occupy idle spectrum bands without interference with the primary user (PU). Generally, when the arrival rate of licensed users is high, secondary ...users (SUs) may starve. In this study, the authors propose two models to improve the average total waiting time for the SU. They are the M/D/1 model of a PU delay system with non-pre-emptive priority and pre-emptive priority. They are compared to an M/D/1 model with PU delay. Numerical analysis and Monte Carlo simulations are performed for all results. Improvements in the average total waiting time of 13–18% for PU and 24–32% for SU in the non-pre-emptive priority scheme are obtained. In the pre-emptive priority scheme, 19–22 and 5–7% improvements are obtained for the PU and SU respectively. Furthermore, same models, but with finite buffer capacity for both users are investigated to model a real-time system. In these schemes, the system improves the average total waiting time by 20–42% for the PU and 34–42% for the CR with the non-pre-emptive priority. Similarly, the pre-emptive model shows 25–44 and 6–24% reduction in the PU and SU waiting times respectively.
Phys.Rev.D71:095015,2005 The SU(3)$_L\otimesU(1)_N$ electroweak model predicts new Higgs bosons beyond
the one of the standard model. In this work we investigate the signature and
production of ...neutral SU(3)$_L\otimesU(1)_N$ Higgs bosons in the $e^-e^+$ Next
Linear Collider (NLC) and in the CERN Linear Collider (CLIC). We compute the
branching ratios of two of the SU(3)$_L\otimesU(1)_N$ neutral Higgs bosons and
study the possibility to detect them and the $Z^\prime$ extra neutral boson of
the model.
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