Spontaneous CP phases and flavour changing neutral currents in the left–right symmetric model

Rodríguez, Yeinzon; Quimbay, C. J.

doi:10.1016/s0550-3213(02)00397-8

Cited by 15 publications

(30 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where the U (1) generator corresponds to the B − L quantum number of the multiplet [5,6,7,8,9]. The gauge bosons consist of two triplets:…”

Section: The Modelmentioning

confidence: 99%

“…To break the symmetry, and give masses to bosons and fermions, it is necessary to introduce a bidoublet Φ and two scalar triplets ∆ L and ∆ R which can be written in a convenient matrix representation 2 × 2 [7,8,9]: , 3, 2) . (16) We need to introduce these elements so that the new vectorial physical bosons W R and Z ′ get heavy masses compatible with the experimental bounds.…”

Section: The Modelmentioning

confidence: 99%

“…(16) We need to introduce these elements so that the new vectorial physical bosons W R and Z ′ get heavy masses compatible with the experimental bounds. With these scalar elements, the most general scalar potential (V ) and Yukawa lagrangian for quarks (L q Y ) and leptons L l Y , which are invariants under the manifest discrete left-right symmetry Φ ←→ Φ † and ∆ L ←→ ∆ R , can be written as [7,8,9]:…”

Section: The Modelmentioning

confidence: 99%

“…One of these ways consists of searching for a natural origin of the CP violating phase, for example, through complex vacuum expectation values. This can be achieved in the Left-Right Symmetric Model (LRSM) [5,6,7,8,9] where there is one genuine complex vacuum expectation value due to the presence of a scalar bidoublet, and that is responsible for the quark sector CP violating phase. There is also another genuine complex vacuum expectation value due to the presence of two scalar triplets that, together with the scalar bidoublet vacuum expectation value, are the responsible for the CP violation in the lepton sector.…”

Section: Introductionmentioning

confidence: 99%

“…Unlike the other works mentioned be-fore [6,14,15,16,17], we stick to the more conservative order of magnitude for the right scale υ R ≥ 10 7 GeV which arises when the neutrino masses generation from the see-saw mechanism is considered [7,9]. In this scenario the new physics sector of the LRSM decouples from the quark sector and, therefore, the new physics effects involving interactions with quarks are negligible.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Are the New Physics Contributions from the Left-Right Symmetric Model Important for the Indirect CP Violation in the Neutral B Mesons?

Rodríguez

Quimbay

2005

Found Phys Lett

Self Cite

View full text Add to dashboard Cite

Several works analyzing the new physics contributions from the LeftRight Symmetric Model to the CP violation phenomena in the neutral B mesons can be found in the literature. These works exhibit interesting and experimentally sensible deviations from the Standard Model predictions but at the expense of considering a low right scale υR around 1 TeV. However, when we stick to the more conservative estimates for υR which say that it must be at least 10 7 GeV, no experimentally sensible deviations from the Standard Model appear for indirect CP violation. This estimate for υR arises when the generation of neutrino masses is considered. In spite of the fact that this scenario is much less interesting and says nothing new about both the CP violation phenomenon and the structure of the LeftRight Symmetric Model, this possibility must be taken into account for the sake of completeness and when considering the see-saw mechanism that provides masses to the neutrino sector.

show abstract

“…where the U (1) generator corresponds to the B − L quantum number of the multiplet [5,6,7,8,9]. The gauge bosons consist of two triplets:…”

Section: The Modelmentioning

confidence: 99%

Section: The Modelmentioning

confidence: 99%

Section: The Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Are the New Physics Contributions from the Left-Right Symmetric Model Important for the Indirect CP Violation in the Neutral B Mesons?

Rodríguez

Quimbay

2005

Found Phys Lett

Self Cite

View full text Add to dashboard Cite

show abstract

Heavy neutrino mass hierarchy from leptogenesis in left–right symmetric models with spontaneous CP-violation

Sahu¹,

Sankar²

2005

Nuclear Physics B

View full text Add to dashboard Cite

We consider left-right symmetric model with spontaneous CP-violation. The Lagrangian of this model is CP invariant and the Yukawa couplings are real. Due to spontaneous breaking of the gauge symmetry, some of the neutral Higgses acquire complex vacuum expectation values, which lead to CP-violation. In the model considered here, we identify the neutrino Dirac mass matrix with that of Fritzsch type charged lepton mass matrix. We assume a hierarchical spectrum of the right handed neutrino masses and derive a bound on this hierarchy by assuming that the decay of the lightest right handed neutrino produces the baryon asymmetry via the leptogenesis route. It is shown that the mass hierarchy we obtain is compatible with the current neutrino oscillation data.

show abstract

TeV scale left–right symmetry and flavor changing neutral Higgs effects

Guadagnoli¹,

Mohapatra²

2011

Physics Letters B

View full text Add to dashboard Cite

In minimal left-right symmetric models, the mass of the neutral Higgs field mediating tree-level flavor changing effects (FCNH) is directly related to the parity breaking scale. Specifically, the lower bound on the Higgs mass coming from Higgs-induced tree-level effects, and exceeding about 15 TeV, would tend to imply a WR mass bound much higher than that required by gauge exchange loop effects -the latter allowing WR masses as low as 2.5 TeV. Since a WR mass below 4 TeV is accessible at the LHC, it is important to investigate ways to decouple the FCNH effects from the WR mass. In this Letter, we present a model where this happens, providing new motivation for LHC searches for WR in the 1 − 4 TeV mass range.

show abstract

Spontaneous CP phases and flavour changing neutral currents in the left–right symmetric model

Cited by 15 publications

References 49 publications

Are the New Physics Contributions from the Left-Right Symmetric Model Important for the Indirect CP Violation in the Neutral B Mesons?

Are the New Physics Contributions from the Left-Right Symmetric Model Important for the Indirect CP Violation in the Neutral B Mesons?

Heavy neutrino mass hierarchy from leptogenesis in left–right symmetric models with spontaneous CP-violation

TeV scale left–right symmetry and flavor changing neutral Higgs effects

Contact Info

Product

Resources

About