Direct bounds on electroweak scale pseudo-Dirac neutrinos from <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>8</mml:mn><mml:mtext> </mml:mtext><mml:mtext>TeV</mml:mtext></mml:math> LHC data

Das, Arindam; Dev, P. S. Bhupal; Okada, Nobuchika

doi:10.1016/j.physletb.2014.06.058

Cited by 142 publications

(66 citation statements)

References 93 publications

(44 reference statements)

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“…Some searches are currently being performed in the LHC [34][35][36][37]. Also, we can mention recent inverse seesaw mechanism (ISS) [38][39][40] heavy neutrino production studies in collider contexts [41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Effective Majorana neutrino decay

et al. 2016

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We study the decay of heavy sterile Majorana neutrinos according to the interactions obtained from an effective general theory. We describe the two-and threebody decays for a wide range of neutrino masses. The results obtained and presented in this work could be useful for the study of the production and detection of these particles in a variety of high energy physics experiments and astrophysical observations. We show in different figures the dominant branching ratios and the total decay width.

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Section: Introductionmentioning

confidence: 99%

Effective Majorana neutrino decay

et al. 2016

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“…If the right-handed neutrinos have masses at the GeV scale, the baryon asymmetry can be described together with neutrino masses and mixings. TeV-scale sterile neutrinos can be found by current or future collider experiments [11][12][13][14][15][16][17]. Grand Unified Theories usually predict right-handed neutrinos which makes them able to explain the baryon asymmetry via leptogenesis [18,19].…”

Section: Introductionmentioning

confidence: 99%

Perspectives for tests of neutrino mass generation at the GeV scale: Experimental reach versus theoretical predictions

Rasmussen¹,

Winter²

2016

Phys. Rev. D

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We discuss the parameter space reach of future experiments searching for heavy neutral leptons (HNLs). We consider the GeV seesaw model with three HNL generations and focus on two classes of models: generic assumptions (such as random mass matrices or the Casas-Ibarra parametrization) and flavor symmetry-generated models. We demonstrate that the generic approaches lead to comparable parameter space predictions, which tend to be at least partially within the reach of future experiments. On the other hand, specific flavor symmetry models yield more refined predictions, and some of these can be more clearly excluded. We also highlight the importance of measuring the flavor-dependent couplings of the HNLs as a model discriminator, and we clarify the impact of assumptions frequently used in the literature to show the parameter space reach for the active-sterile mixings.

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“…A related study in the context of the inverse seesaw embedded within the next-to-minimal supersymmetric standard model (NMSSM) finds that it may be possible to detect the heavy RHN at the LHC in the trilepton þ MET final state with suitable cuts applied [81]; however, this was for M N ¼ 100 GeV which has a much larger production cross section. We note that striking collider signatures of lepton-number violation [83][84][85][86][87][88][89][90] are suppressed in our scenario by the small collective breaking of the lepton number.…”

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confidence: 69%

Neutrino masses from neutral top partners

Batell

McCullough

2015

Phys. Rev. D

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We present theories of "natural neutrinos" in which neutral fermionic top partner fields are simultaneously the right-handed neutrinos (RHN), linking seemingly disparate aspects of the Standard Model structure: (a) The RHN top partners are responsible for the observed small neutrino masses, (b) they help ameliorate the tuning in the weak scale and address the little hierarchy problem, and (c) the factor of 3 arising from N c in the top-loop Higgs mass corrections is countered by a factor of 3 from the number of vectorlike generations of RHN. The RHN top partners may arise in pseudo-Nambu-Goldstone-Boson Higgs models such as the twin Higgs, as well as more general composite, little, and orbifold Higgs scenarios, and three simple example models are presented. This framework firmly predicts a TeV-scale seesaw, as the RHN masses are bounded to be below the TeV scale by naturalness. The generation of light neutrino masses relies on a collective breaking of the lepton number, allowing for comparatively large neutrino Yukawa couplings and a rich associated phenomenology. The structure of the neutrino mass mechanism realizes in certain limits the inverse or linear classes of seesaw. Natural neutrino models are testable at a variety of current and future experiments, particularly in tests of lepton universality, searches for lepton flavor violation, and precision electroweak and Higgs coupling measurements possible at high energy e þ e − and hadron colliders.

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Direct bounds on electroweak scale pseudo-Dirac neutrinos from s=8 TeV LHC data

Cited by 142 publications

References 93 publications

Effective Majorana neutrino decay

Effective Majorana neutrino decay

Perspectives for tests of neutrino mass generation at the GeV scale: Experimental reach versus theoretical predictions

Neutrino masses from neutral top partners

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