Bilinear R-parity violation with flavor symmetry

Bazzocchi, Federica; Morisi, Stefano; Peinado, E.; Valle, J. W. F.; Vicente, Avelino

doi:10.1007/jhep01(2013)033

Cited by 10 publications

(9 citation statements)

References 66 publications

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“…This typically implies very complicated scalar potentials, whose minimization leads to viable vacua (from a phenomenological point of view) thanks to the soft SUSY breaking terms. An example in the context of the A 4 symmetry can be found in [25]. Although the model under consideration here involves a different flavor symmetry, similar results are expected.…”

Section: Summary and Discussionsupporting

confidence: 70%

Flavor origin of R-parity

Morisi¹,

Peinado²,

Vicente³

2013

J. Phys. G: Nucl. Part. Phys.

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Proton stability is guaranteed in the MSSM by assuming a discrete symmetry, R-parity. However, there are additional R-parity conserving higher dimensional operators which violate lepton and baryon numbers and induce fast proton decay. Here we study the possibility that all renormalizable, as well as the most dangerous non-renormalizable, R-parity violating operators are forbidden by a flavor symmetry, providing a common origin for fermion mixing and proton and dark matter stability. We propose a specific model based on the ∆(27) discrete symmetry.

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Section: Summary and Discussionsupporting

confidence: 70%

Flavor origin of R-parity

Morisi¹,

Peinado²,

Vicente³

2013

J. Phys. G: Nucl. Part. Phys.

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“…This relation was suggested in [18][19][20][21] and can hold at the electroweak scale 1 . First we note that such a relation between down-type quark and charged lepton masses can be understood because of group structure, when there are three vacuum expectation values and only two invariant contractions (Yukawas) in the product, 3 ⊗ 3 ⊗ 3.…”

mentioning

confidence: 84%

Relating quarks and leptons with the T 7 flavour group

Bonilla

Morisi²,

Peinado

et al. 2015

Physics Letters B

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In this letter we present a model for quarks and leptons based on T 7 as flavour symmetry, predicting a canonical mass relation between charged leptons and down-type quarks proposed earlier. Neutrino masses are generated through a Type-I seesaw mechanism, with predicted correlations between the atmospheric mixing angle and neutrino masses. Compatibility with oscillation results leads to lower bounds for the lightest neutrino mass as well as for the neutrinoless double beta decay rates, even for normal neutrino mass hierarchy.

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“…In the usual framework of bilinear RPV-MSSM [30][31][32][33], the lepton and the Higgs superfields are at the same footing [34] as they carry the same gauge charges. The lepton number violating couplings depend on the choice of ( H d , L i ) basis.…”

Section: Choice Of Basismentioning

confidence: 99%

Natural emergence of neutrino masses and dark matter from R-symmetry

Chakraborty

Chakrabortty

2017

J. High Energ. Phys.

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We propose a supersymmetric extension of the Standard Model (SM) with a continuous global U(1) R symmetry. The R-charges of the SM fields are identified with that of their lepton numbers. As a result, both bilinear and trilinear 'R-parity violating' (RPV) terms could be present at the superpotential. However, R-symmetry is not an exact symmetry as it is broken by supergravity effects. Hence, sneutrinos acquire a small vacuum expectation value in this framework. However, a suitable choice of basis ensures that the bilinear RPV terms can be completely rotated away from the superpotential and the scalar potential. On the other hand, the trilinear terms play a very crucial role in generating neutrino masses and mixing at the tree level. This is noticeably different from the typical R-parity violating Minimal Supersymmetric Standard Model. Also, gravitino mass turns out to be the order parameter of R-breaking and is directly related to the neutrino mass. We show that such a gravitino, within the mass range 200 keV m 3/2 0.1 GeV can be an excellent dark matter candidate. Finally, we looked into the collider implications of our framework.

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Bilinear R-parity violation with flavor symmetry

Cited by 10 publications

References 66 publications

Flavor origin of R-parity

Flavor origin of R-parity

Relating quarks and leptons with the T 7 flavour group

Natural emergence of neutrino masses and dark matter from R-symmetry

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