منابع مشابه
Z and Z ′ decays with and without FCNC in 331 models
In the context of the 331 models, we consider constraints on the extra neutral boson Z ′ predicted by the model, where three different quark family assignments are identified. Using the ansatz of Matsuda as an specific texture for the quark mass matrices, we obtain allowed regions associated with the Z-Z' mixing angle, the mass of the Z ′ boson and the parameter β which determines different 331...
متن کاملThe Scalar Sector in 331 Models
We calculate the exact tree-level scalar mass matrices resulting from symmetry breaking using the most general gauge-invariant scalar potential of the 331 model, both with and without the condition that lepton number is conserved. Physical masses are also obtained in some cases, as well as couplings to standard and exotic gauge bosons.
متن کاملRenormalization Group and Grand Unification with 331 Models
By making a renormalization group analysis we explore the possibility of having a 331 model as the only intermediate gauge group between the standard model and the scale of unification of the three coupling constants. We shall assume that there is no necessarily a group of grand unification at the scale of convergence of the couplings. With this scenario, different 331 models and their correspo...
متن کاملOp-jbio130015 331..338
Glutamate is a major excitatory neurotransmitter in the vertebrate brain. Among the ionotropic glutamate receptors, a-amino-3-hydroxyl-5-methyl-4-isoxazolepropionate (AMPA) glutamate receptors are the major receptors mediating excitatory fast synaptic transmission. AMPA receptors are also responsible for modifying synaptic strength through the regulation of their numbers at synapses. Their high...
متن کامل331 - 338 Saovanee Leelayoova.pmd
A cross-sectional study was performed to determine the prevalence of giardiasis in hilltribe children of 2 different remote districts (Mae-chaem and Hod), Chiang Mai, Northern Thailand from November 2006-April 2007. The overall prevalence of giardiasis was 5.2%. Genetic characterization of Giardia duodenalis isolated from these children was performed using PCR methods specific for small subunit...
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ژورنال
عنوان ژورنال: Brazilian Journal of Physics
سال: 2008
ISSN: 0103-9733
DOI: 10.1590/s0103-97332008000400008