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Higgs bosons generated on the ILC

Author: FengZuoLin
Tutor: YueChongXing
School: Liaoning Normal University
Course: Particle Physics and Nuclear Physics
Keywords: Heavy lepton seesaw mechanism New physical model Higgs boson
CLC: O572.2
Type: Master's thesis
Year: 2011
Downloads: 6
Quote: 0
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Abstract


The standard model of particle physics (SM) is in the group SU ( 3) cx SU (2) LxU ( 1 ) Y norms invariance and the Higgs mechanism based on established . Gauge invariance has been confirmed by experiment , but in the experiment has not yet been found to cause the spontaneous symmetry breaking of the Higgs boson , the Higgs mechanism is still in assuming stage . The SM very good explanation and description of the nature of elementary particles and weak , electricity , strong three basic interactions. SM contains three generations of lepton ι = e , μ , τ and their corresponding neutrino , it is predicted that the neutrinos are strictly massless . But the solar neutrino experiments and atmospheric neutrino experiments between different flavor neutrinos oscillate , neutrino quality , which showed that the SM has limitations . SM has achieved great success , but there are still many problems , such as more free parameters , unnatural problem of Higgs boson quality the square divergence problem - level problems, and so on . Therefore, we have reason to suspect that SM is not perfect , which requires the introduction of a new theoretical model , or to extend the SM . SM seesaw mechanism to extend not only to the neutrino small quality problems , but also the use of some of the seesaw mechanism model also predicted the existence of heavy leptons . In addition to the seesaw mechanism predicted the existence of heavy leptons , other new physics beyond the SM model model also predicted the existence of heavy leptons . For example : the smallest move around artificial color model , little Higgs models have a detailed discussion of the heavy lepton . This paper studies the the seesaw Ⅲ mechanism prophecy heavy lepton contribution of the generation process of the Higgs boson at the ILC on . Calculation of the heavy lepton production cross section for e e-→ HH process the size and given the analysis also calculated branching ratio , the results of these calculations for the future linear collider to detect the Higgs boson provides a theoretical basis .

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