Neutrino mass from a d=7 effective operator in a SUSY-GUT framework

Krauss, Martin B.; Meloni, Davide; Porod, W.; Winter, Walter

doi:10.1007/jhep05(2013)121

Cited by 13 publications

(18 citation statements)

References 140 publications

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“…In fact, we cannot avoid this VEV due to the coupling of the singlet to the Higgs, see also refs. [62,67] for a similar discussion for higher JHEP02(2014)056 Figure 11. Decompositions of the effective d = 6 operator #C6.…”

Section: Operators Of the Type χχ (H † H)mentioning

confidence: 74%

Higher dimensional effective operators for direct dark matter detection

Krauss

Morisi

Porod

et al. 2014

J. High Energ. Phys.

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We discuss higher dimensional effective operators describing interactions between fermionic dark matter and Standard Model particles. They are typically suppressed compared to the leading order effective operators, which can explain why no conclusive direct dark matter detection has been made so far. The ultraviolet completions of the effective operators, which we systematically study, require new particles. These particles can potentially have masses at the TeV scale and can therefore be phenomenologically interesting for LHC physics. We demonstrate that the lowest order options require Higgsportal interactions generated by dimension six operators. We list all possible tree-level completions with extra fermions and scalars, and we discuss the LHC phenomenology of a specific example with extra heavy fermion doublets.

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Section: Operators Of the Type χχ (H † H)mentioning

confidence: 74%

Higher dimensional effective operators for direct dark matter detection

Krauss

Morisi

Porod

et al. 2014

J. High Energ. Phys.

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“…First, with the use of non-Abelian discrete symmetries it is possible to construct viable models, genuine in the sense that they can give the leading contribution to the neutrino mass matrix. We will not discuss in detail such models, since the use of discrete symmetries for d = 7 neutrino masses have been discussed in this context already in a number of references, see for example [14,[17][18][19][20].…”

Section: Jhep07(2017)079mentioning

confidence: 99%

“…After giving all the diagrams that can be construct with quadruplets as the highest representation (figures [18][19][20], the last case depicted in figure 9 shows the only genuine JHEP07(2017)079 diagram that can be constructed with no representation bigger than triplet. Despite its similarity to the structure given in figure 8 (left), the 4-leg vertex prevents lower order neutrino masses already with triplets.…”

Section: Diagrams: Minimal Su(2) L Representationsmentioning

confidence: 99%

Loop neutrino masses from d = 7 operator

Cepedello¹,

Hirsch²,

Helo³

2017

J. High Energ. Phys.

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Abstract:We discuss the generation of small neutrino masses from d = 7 1-loop diagrams. We first systematically analyze all possible d = 7 1-loop topologies. There is a total of 48 topologies, but only 8 of these can lead to "genuine" d = 7 neutrino masses. Here, we define genuine models to be models in which neither d = 5 nor d = 7 tree-level masses nor a d = 5 1-loop mass appear, such that the d = 7 1-loop is the leading order contribution to the neutrino masses. All genuine models can then be organized w.r.t. their particle content. We find there is only one diagram with no representation larger than triplet, while there are 22 diagrams with quadruplets. We briefly discuss three minimal example models of this kind.

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“…3,5,7 These additional particles have to be closed off in loops to produce a Majorana neutrino mass self-energy graph from the operator. Thus, theories based on d ≥ 7 operators (apart from the generalised Weinberg class) necessarily produce radiative neutrino mass generation.…”

Section: -7mentioning

confidence: 99%

Searching for radiative neutrino mass generation at the LHC

Volkas

2015

Int. J. Mod. Phys. A

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In this talk, I describe the general characteristics of radiative neutrino mass models that can be probed at the LHC. I then cover the specific constraints on a new, explicit model of this type.Keywords: Neutrino; radiative mass generation; effective operators; flavor-violation constraints; LHC constraints See-saw versus radiative neutrino mass generationMany models of radiative neutrino mass are possible, some of which have been analysed in depth, while others have been examined only briefly, with quite a number yet to be explicitly written down let alone analysed. A useful organising principle for Majorana neutrino mass models is to use standard model (SM) effective operators that violate lepton number conservation by two units (∆L = 2 operators) as a base from which to construct new theories. 1-7Restricting ourselves to operators containing SM fermions and a single Higgs doublet, they occur at odd mass dimensions, with the lowest order one occurring at d = 5. That operator is the famous Weinberg operator, which has the schematic structure LLHH, where L is a lepton doublet and H the Higgs doublet. After electroweak symmetry breaking, this operator (actually a set of operators because of the family structure) directly induces a Majorana neutrino mass for left-handed (LH) neutrinos given by the see-saw formula,where M is the scale of the new physics that gives rise to the operator in the low-energy limit. Underlying renormalisable theories yielding LLHH are constructed by "opening up" the operator. The type-1,-2 and -3 see-saw models are the minimal, tree-level ways to open up LLHH. [8][9][10][11][12][13][14][15][16][17][18][19] By starting with the effective operator, one may systematically construct all of the minimal underlying models.Other ∆L = 2 effective operators have mass dimension seven or higher and feature other lepton and quark fields in their expression, except for those in the

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Neutrino mass from a d=7 effective operator in a SUSY-GUT framework

Cited by 13 publications

References 140 publications

Higher dimensional effective operators for direct dark matter detection

Higher dimensional effective operators for direct dark matter detection

Loop neutrino masses from d = 7 operator

Searching for radiative neutrino mass generation at the LHC

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