Simple left-right theory: Lepton number violation at the LHC

Pérez, P.; Murgui, Clara; Ohmer, Sebastian

doi:10.1103/physrevd.94.051701

Cited by 23 publications

(21 citation statements)

References 27 publications

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“…In addition to the canonical formulation of the LRSM are several alternatives. For example: It is possible to instead generate LH and RH Majorana neutrino masses radiatively in the absence of triplet scalars [132,133]. One can gauge baryon number and lepton number independently, which, for an anomaly-free theory, gives rise to vector-like leptons and a Type III Seesaw mechanism [134,135] (see Sec.…”

Section: Type I+ii Hybrid Seesaw In Left-right Symmetric Modelmentioning

confidence: 99%

Lepton Number Violation: Seesaw Models and Their Collider Tests

et al. 2018

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The Majorana nature of neutrinos is strongly motivated from the theoretical and phenomenological point of view. A plethora of neutrino mass models, known collectively as Seesaw models, exist that could generate both a viable neutrino mass spectrum and mixing pattern. They can also lead to rich, new phenomenology, including lepton number non-conservation as well as new particles, that may be observable at collider experiments. It is therefore vital to search for such new phenomena and the mass scale associated with neutrino mass generation at high energy colliders. In this review, we consider a number of representative Seesaw scenarios as phenomenological benchmarks, including the characteristic Type I, II, and III Seesaw mechanisms, their extensions and hybridizations, as well as radiative constructions. We present new and updated predictions for analyses featuring lepton number violation and expected coverage in the theory parameter space at current and future colliders. We emphasize new production and decay channels, their phenomenological relevance and treatment across different facilities in e + e − , e − p, and pp collisions, as well as the available Monte Carlo tools available for studying Seesaw partners in collider environments.

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Section: Type I+ii Hybrid Seesaw In Left-right Symmetric Modelmentioning

confidence: 99%

Lepton Number Violation: Seesaw Models and Their Collider Tests

et al. 2018

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“…Note that neutrinos are Dirac fermions in this minimal configuration. Majorana neutrinos could be accounted for by introducing a singly charged scalar field [41]. The down-type quark mass matrix is given by…”

Section: Higgs Doubletsmentioning

confidence: 99%

Spontaneous CP violation and the strong CP problem in left-right symmetric theories

Ohmer

2019

Phys. Rev. D

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We study spontaneous CP violation as a solution to the strong CP problem in left-right symmetric theories. The discrete CP symmetry is broken by a complex vacuum expectation value of a righthanded Higgs doublet. Heavy vectorlike down-type quarks mix with the Standard Model quarks introducing the known CP violation -realizing a variant of the Nelson-Barr mechanism. A nonvanishing QCD vacuum angle is generated at loop level. The implementation in the ultraviolet complete theory of trinification at low scales is discussed. We further comment on the phenomenology and future testability of the model.

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“…The δ + field is responsible for producing the Majorana mass terms in the neutrino mass matrix which are given as [6]:…”

Section: Model and Spectrummentioning

confidence: 99%

“…In this work we study an extended Zee model in a left-right symmetric (LRS) framework [5]. The model was proposed and studied in context of the LHC in [6] and the low energy flavor violating processes were discussed in [7]. In this work we examine its viability from neutrino oscillation data, study the scalar potential in detail and derive charged Higgs spectrum, as well as analyze the possible electron-positron collider implications for the charged singlet Higgs boson.…”

Section: Introductionmentioning

confidence: 99%

Neutrino and collider implications of a left-right extended Zee model

2018

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We study a simple left-right symmetric (LRS) extension of the Zee model for neutrino mass generation. An extra SU (2) L/R singlet charged scalar helps in generating a loop-induced Majorana mass for neutrinos in this model. The right-handed neutrinos in this case are very light of the order of a few eV to a few MeV which makes this scenario quite different from other LRS models. We have analyzed the scalar potential and Higgs spectrum in detail, which also play an important role for the neutrino phenomenology. We identified the parameter regions in the model which satisfy the experimentally observed neutrino masses and mixings along with other experimental constraints. We have then studied the collider signatures of the charged scalar at e + e − colliders with different benchmark points. It is possible to get a huge enhancement in the production cross-section of the charged scalar at lepton collider compared to the hadron colliders, resulting in a much stronger signal which can be easily observed at the upcoming ILC or CLIC experiments.

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Simple left-right theory: Lepton number violation at the LHC

Cited by 23 publications

References 27 publications

Lepton Number Violation: Seesaw Models and Their Collider Tests

Lepton Number Violation: Seesaw Models and Their Collider Tests

Spontaneous CP violation and the strong CP problem in left-right symmetric theories

Neutrino and collider implications of a left-right extended Zee model

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