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Probing Lepton Flavor Violation Signal Via ???(?)?_j In The LRTH At The ILC

Posted on:2019-01-25Degree:MasterType:Thesis
Country:ChinaCandidate:K XieFull Text:PDF
GTID:2370330545453517Subject:Particle Physics and Nuclear Physics
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In particle physics,Standard Model are used to describe strong and weak interactions.The discovery and verification of Higgs particles indicate that all particles predicted by the standard model have been tested accurately by experiments.But the standard model itself has some problems,such as the rank problem,the neutrino mass problem,the existence of dark matter,etc.Physicists have proposed some new physical models to solve these problems.For example,the Supersymmetry theory includes the little Higgs Model,the Technicolor Model,the Extra Dimensional Model,and so on.Therefore,physicists generally think that the Standard Model may be only a low-energy and efficient theory,and there may be a new physical existence near the high-energy scale.In 2006,Chacko and other high-energy physicists proposed the Twin Higgs mechanism,which obeys discrete symmetry,in order to solve the hierarchical problem.It can ensure that the secondary divergence contribution of the Higgs potential energy can obey the global symmetry.It can be divided into two types:the Mirror Twin Higgs model and the Left Right Twin Higgs model.The Left Right Twin Higgs model is extended to SU(3)L ×SU(2)R ×U(1)B-L the gauge symmetric group.Thus the quark and lepton can be marked in the form of a double state of the gauge group SU(2)(left and right discrete symmetry).In the Left Right Twin Higgs Model,we try to explain why neutrino has mass and why its mass is so small and heavy to induce Majorana neutrino.This shows that neutrinos and other fermions have different mechanisms of production,because of charged Higgs,the coexistence of heavy gauge bosons and heavy neutrinos,and the mixing of neutrinos with charged leptons.In the Left Right Twin Higgs Model,we study the collision process ????i?j by effectively constraining the model parameters and the mass of the dextral neutrino.The mass of scalar particles detects some signals in ILC.Since there is no lepton odor destruction process under the Standard Model,the process we studied can be regarded as evidence of the new physical existence.
Keywords/Search Tags:Standard Model, lepton, neutrino, Left Right Twin Higgs Model, ILC, cross section
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