Family dependence in 331 models

Martı́nez, R.; Ochoa, F.

doi:10.1590/s0103-97332007000400030

Cited by 2 publications

(2 citation statements)

References 3 publications

(5 reference statements)

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“…In the hadronic sector, the first two families are placed as antitriplets Q iL = (d iL , −u iL , D iL ) T , with i = 1, 2, while the third one is placed as triplet, Q 3L = (u 3L , d 3L , U 3L ) T . The first two and the third family of quarks are in dif-ferent representations due to an anomaly cancellation requirement adequately described in previous works [7,9]. As a consequence of this non-universality in the quark sector, sources of FCNC will arise at tree level in the 331 RHN model as we will show later.…”

Section: A Fermionic Contentmentioning

confidence: 53%

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Novel sources of Flavor Changed Neutral Currents in the 331 RHN model

et al. 2012

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Sources of Flavor Changed Neutral Currents (FCNC) emerge naturally from a well motivated framework called 3-3-1 with right-handed neutrinos model, 331RHN for short, mediated by an extra neutral gauge boson Z . Following previous works we calculate these sources and in addition we derive new ones coming from CP-even and -odd neutral scalars which appear due to their nondiagonal interactions with the physical standard quarks. Furthermore, by using 4 texture zeros for the quark mass matrices, we derive the mass difference terms for the neutral mesons systems K 0 −K 0 , D 0 −D 0 and B 0 −B 0 and show that, though one can discern that the Z contribution is the most relevant one for mesons oscillations purposes, scalars contributions play a role also in this processes and hence it is worthwhile to investigate them and derive new bounds on space of parameters. In particular, studying the B 0 −B 0 system we set the bounds M Z 4.2 TeV and MS 2 , MI 3 7.5 TeV in order to be consistent with the current measurements. *

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Section: A Fermionic Contentmentioning

confidence: 53%

“…The first two and the third family of quarks are in dif-ferent representations due to an anomaly cancellation requirement adequately described in previous works [7,9]. As a consequence of this non-universality in the quark sector, sources of FCNC will arise at tree level in the 331 RHN model as we will show later.…”

Section: A Fermionic Contentmentioning

confidence: 53%

Novel sources of Flavor Changed Neutral Currents in the 331 RHN model

et al. 2012

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WIMPs in a 3-3-1 model with heavy sterile neutrinos

et al. 2011

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In this work we build a gauge model based on the SUð3Þ c SUð3Þ L Uð1Þ N symmetry with heavy neutrinos and show that we can have two weakly interacting cold dark matter candidates in its spectrum. This is achieved by noticing that a global Uð1Þ symmetry can be imposed on the model in such a way that the stability of the dark matter is guaranteed. We obtain their relic abundance and analyze their compatibility with recent direct detection experiments, also exploring the possibility of explaining the two events reported by CDMSII. An interesting outcome of this 3-3-1 model, concerning direct detection of these WIMPs, is a strong bound on the symmetry breaking scale, which imposes it to be above 3 TeV.

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Family dependence in 331 models

Cited by 2 publications

References 3 publications

Novel sources of Flavor Changed Neutral Currents in the 331 RHN model

Novel sources of Flavor Changed Neutral Currents in the 331 RHN model

WIMPs in a 3-3-1 model with heavy sterile neutrinos

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