Probing the type-II seesaw mechanism through the production of Higgs bosons at a lepton collider

Agrawal, Pankaj; Mitra, Manimala; Niyogi, Saurabh; Shil, Sujay; Spannowsky, Michael

doi:10.1103/physrevd.98.015024

Cited by 29 publications

(20 citation statements)

References 89 publications

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“…This difference in the lower mass bound from LHC for normal and inverted ordering will not cause a meaningful impact on our conclusions and with this understanding in mind, we will simply quote those in Eq.(3.5). There are other important limits on this scenario [83,[95][96][97][98] but the ones we quote are the most relevant. For a more complete discussion of the collider bounds on the type II seesaw we refer to [99].…”

Section: Searches For a Doubly Charged Scalar At The Lhcmentioning

confidence: 99%

Lepton flavor violation and collider searches in a type I + II seesaw model

et al. 2019

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Neutrino are massless in the Standard Model. The most popular mechanism to generate neutrino masses are the type I and type II seesaw, where right-handed neutrinos and a scalar triplet are augmented to the Standard Model, respectively. In this work, we discuss a model where a type I + II seesaw mechanism naturally arises via spontaneous symmetry breaking of an enlarged gauge group. Lepton flavor violation is a common feature in such setup and for this reason, we compute the model contribution to the µ → eγ and µ → 3e decays. Moreover, we explore the connection between the neutrino mass ordering and lepton flavor violation in perspective with the LHC, HL-LHC and HE-LHC sensitivities to the doubly charged scalar stemming from the Higgs triplet. Our results explicitly show the importance of searching for signs of lepton flavor violation in collider and muon decays. The conclusion about which probe yields stronger bounds depends strongly on the mass ordering adopted, the absolute neutrino masses and which much decay one considers. In the 1 − 5 TeV mass region of the doubly charged scalar, lepton flavor violation experiments and colliders offer orthogonal and complementary probes. Thus if a signal is observed in one of the two new physics searches, the other will be able to assess whether it stems from a seesaw framework.

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Section: Searches For a Doubly Charged Scalar At The Lhcmentioning

confidence: 99%

Lepton flavor violation and collider searches in a type I + II seesaw model

et al. 2019

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“…In the type I seesaw mechanism, heavy right-handed neutrinos lead to small neutrino masses, whereas in the type II seesaw the small scalar triplet vev justifies the small neutrino masses [59][60][61][62][63][64][65][66][67][68][69][70][71]. Notice that these mechanisms are completely different from one another but at the end have the same goal.…”

Section: Seesaw Realizations In the 2hdm-u(1)mentioning

confidence: 99%

Type I + II seesaw in a Two Higgs Doublet Model

et al. 2019

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Two Higgs Doublet Models (2HDM) are popular extensions of the Standard Model for several reasons, but do not explain neutrino masses. In this work, we investigate how one can incorporate neutrino masses within the framework of the 2HDM-U(1), where U(1) is an abelian gauge symmetry used to nicely address the absence of flavor changing neutral currents in 2HDM. In particular, we explore realizations of the type I and type II seesaw since they are mechanisms that we dote on for being able to generate elegantly small active neutrino masses. We show that one can build several models featuring type I, type II and type I+II seesaw mechanism with different phenomenological implications.

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“…Theoretical prediction for v ∼ O(10) GeV is still allowed [79]. The recent experimental upper bound is v < 25 GeV [80]. As a result, contributions from F 21,SW W and F 21,W SS to the SM-like Higgs boson decay h → Z γ can reach value of F 21,W × O(10 −2 ), which is still far from the sensitivity of the recent experiments.…”

Section: Heavy Charged Boson Effects On Higgs Decays H → Zγ In Bsmmentioning

confidence: 99%

General one-loop formulas for decay $$h\rightarrow Z\gamma $$ h → Z γ

et al. 2018

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Radiative corrections to the decay h → Z γ are evaluated in the one-loop approximation. The unitary gauge is used. The analytic result is expressed in terms of the Passarino-Veltman functions. The calculations are applicable for the Standard Model as well for a wide class of its gauge extensions. In particular, the decay width of a charged Higgs boson H ± → W ± γ can be derived. The consistence of our formulas and several specific earlier results is shown. ening discussions and comments about divergences and counterterms. He also thanks the BLTP, JINR for financial support and hospitality during his stay where this work is performed. The authors thank Prof. Roberto Enrique Martinez and Dr. Bhupal Dev, for communicating and recommending us Refs. [23,40,41]. This research is funded by the Vietnam National Foundation for Science and Technology Development (NAFOSTED) under the grant number 103.01-2017.29.

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Probing the type-II seesaw mechanism through the production of Higgs bosons at a lepton collider

Cited by 29 publications

References 89 publications

Lepton flavor violation and collider searches in a type I + II seesaw model

Lepton flavor violation and collider searches in a type I + II seesaw model

Type I + II seesaw in a Two Higgs Doublet Model

General one-loop formulas for decay $$h\rightarrow Z\gamma $$ h → Z γ

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