Abstract
The addition of $SU(2)_L$ triplet fermions of zero hypercharge with the Standard Model (SM) helps to explain the origin of the neutrino mass by the so-called seesaw mechanism. Such a scenario is commonly know as the type-III seesaw model. After the electroweak symmetry breaking the mixings between the light and heavy mass eigenstates of the neutral leptons are developed which play important roles in the study of the charged and neutral multiplets of the triplet fermions at the colliders. In this article we study such interactions to produce these multiplets of the triplet fermion at the electron-positron and electron-proton colliders at different center of mass energies. We focus on the heavy triplets, for example, having mass in the TeV scale so that their decay products including the SM the gauge bosons or Higgs boson can be sufficiently boosted, leading to a fat jet. Hence we probe the mixing between light-heavy mass eigenstates of the neutrinos and compare the results with the bounds obtained by the electroweak precision study.
Highlights
The observations of the neutrino oscillation phenomena and the flavor mixing [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16] give a very strong indication of the existence of the tiny neutrino masses
We have studied eþe− þ J final state from Fig. 15, and the bound obtained from this final state is shown in Fig. 21, in which the best results could be obtained at the 3 TeV e−eþ collider with 5 ab−1 luminosity just below the limits obtained from the eletroweak precision data (EWPD) at 3σ significance
We have studied the triplet fermion initiated seesaw model, which is commonly known as the type-III seesaw scenario, which is responsible for the light neutrino mass generation through the seesaw mechanism
Summary
The observations of the neutrino oscillation phenomena and the flavor mixing [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16] give a very strong indication of the existence of the tiny neutrino masses. We study the production of the neutral and charged multiplet of the triplet fermion at the electronpprffioffiton ðe−pÞ collider at different center-of-mass energies, s 1⁄4 1.3, 1.8, and 3.46 TeV. Mixing with the SM light neutrinos, these neutral fermions generate tiny neutrino mass through the seesaw mechanism after the electroweak symmetry breaking. With this convention, we rewrite the Eq (1) as. We write the interaction Lagrangian of the SM leptons and charged and neutral multiplets of the triplet fermions with the SM Higgs (h) boson. Ve 1⁄4 0.019, Vμ 1⁄4 0, and Vτ 1⁄4 0 to generate the events and to estimate the bounds on the jVej
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