At the CERN large hadron collider (LHC), production of the Higgs boson in association with Z or W bosons provides a dramatic experimental signal for detecting the standard model (SM) Higgs boson. In this paper, we con...At the CERN large hadron collider (LHC), production of the Higgs boson in association with Z or W bosons provides a dramatic experimental signal for detecting the standard model (SM) Higgs boson. In this paper, we consider the contributions of the left-right twin Higgs (LRTH) model to the processes q()'→Z(W)H. Our numerical results show that, in the favorable parameter spaces, the cross sections deviate distinctly from the predictions of the SM. The possible signals of the LRTH model can be detected via these processes at the LHC experiments.展开更多
In the framework of the left-right twin Higgs(LRTH) model, we study the Higgs boson and single top quark associated production at the LHC. We investigate the processes pp → thj, pp → thˉb and pp → th W at the 8(14...In the framework of the left-right twin Higgs(LRTH) model, we study the Higgs boson and single top quark associated production at the LHC. We investigate the processes pp → thj, pp → thˉb and pp → th W at the 8(14) Te V LHC and find that the production cross sections of the three processes can be enhanced at different levels. Among them,the production cross section of the process pp → thˉb is enhanced significantly due to the contribution of the new particles predicted by the LRTH model.展开更多
The left-right twin Higgs （LRTH） model predicts the existence of the neutral Higgs bosons （h, φ0）, which can be produced in pairs （φ0φ0, hh, φ0h） via γγ collisions at the next generation e＋eInternational ...The left-right twin Higgs （LRTH） model predicts the existence of the neutral Higgs bosons （h, φ0）, which can be produced in pairs （φ0φ0, hh, φ0h） via γγ collisions at the next generation e＋eInternational Linear Collider （ILC）. Our numerical results show that the production cross section of the neutral Higgs boson pair φ0φ0 can reach 8.8 fb. The subprocess γγ → φ0φ0 might be used to test the LRTH model in future ILC experiments.展开更多
The left-right twin Higgs model contains a new vector-like heavy top quark, which mixes with the SM- like top quark. In this work, we studied the single vector-like top partner production via process e-γ→ve Tb at th...The left-right twin Higgs model contains a new vector-like heavy top quark, which mixes with the SM- like top quark. In this work, we studied the single vector-like top partner production via process e-γ→ve Tb at the International Linear Collider. We calculated the production cross section at tree level and displayed the relevant differential distributions. The result shows that there will be 125 events produced each year with s=2 TeV and the integrated luminosity Lint ≈500 fb-1, and the b-quark tagging and the relevant missing energy ET cut will be helpful to detect this new effect.展开更多
In the framework of the left-right twin Higgs model, we study pair production of the right-handed neutrinos at the International Linear Collider (ILC) and the CERN Large Hadron Collider (LHC). Our numerical results sh...In the framework of the left-right twin Higgs model, we study pair production of the right-handed neutrinos at the International Linear Collider (ILC) and the CERN Large Hadron Collider (LHC). Our numerical results show that the production cross section of the process e+e→N N is at the level of several tens fb at the ILC. However, the resonance production cross section can be significantly enhanced to the order of pb. The pair production cross section for the right-handed neutrinos is the level of several hundreds of fb at the LHC. In general, pair production of right-handed neutrinos gives rise to 2l+4j signal without missing energy. As long as the right-handed neutrinos are not too heavy, we conclude that its pair production might be used to test for the left-right twin Higgs model at the future ILC and LHC experiments.展开更多
In the framework of the left-right twin Higgs(LRTH) model,we study the possibilities to detect the new Z boson at the Tevatron and LHC.First,using p p collision data collected by the D0 and CDF II detectors,we find th...In the framework of the left-right twin Higgs(LRTH) model,we study the possibilities to detect the new Z boson at the Tevatron and LHC.First,using p p collision data collected by the D0 and CDF II detectors,we find that the LRTH Z boson is excluded with masses below 940 GeV.Then we search for signatures of the Z boson at the LHC from the analysis of some distributions for p p →μ+μ- + X,such as the number of events,the differential cross section of the dimuon invariant mass,the distributions of the transverse momentum and the forward-backward charge asymmetry.We do our calculation for two typical values of the LHC center of mass energy(7 and 14 TeV).The numerical results show that,by applying convenient cuts on some of the observables,the dimuon invariant mass and final particle pT distributions can reveal the presence of the heavy neutral gauge boson Z contribution in the LRTH model.展开更多
The decay t→cV(V=γ,Z,g)processes in mirror twin Higgs models with colorless top partners are studied in this paper.We report that the branchi ng ratios of these decays can strongly affect the standard model expectat...The decay t→cV(V=γ,Z,g)processes in mirror twin Higgs models with colorless top partners are studied in this paper.We report that the branchi ng ratios of these decays can strongly affect the standard model expectations in some parameter spaces and may be detectable according to the current precision electroweak measurements.Thus,constraints on the model parameters may be obtained from the branching fraction of the decay processes,which may serve as a robust detection tool for this new physics model.展开更多
In the context of the left-right twin Higgs (LRTH) model,we have studied the charged Higgs bosons production processes e^+e^-(γγ)→tφ~at the International Linear Collider (ILC).It is found that the cross sections o...In the context of the left-right twin Higgs (LRTH) model,we have studied the charged Higgs bosons production processes e^+e^-(γγ)→tφ~at the International Linear Collider (ILC).It is found that the cross sections of these two processes could reach a few fb with reasonable parameter values.With the yearly integrated luminosity of L=500 fb-1 expected at the ILC,one could collect hundreds up to thousands of charged Higgs events via these two processes.Therefore,our researches in this paper can help us search for charged Higgs bosons,and furthermore,to test the LRTH model.展开更多
In the context of the SU(3) simple group model and the Left-Right twin Higgs(LRTH) model,we study the single production of the new gauge boson Z' via e-γ collision and discuss the possibility to detect this new p...In the context of the SU(3) simple group model and the Left-Right twin Higgs(LRTH) model,we study the single production of the new gauge boson Z' via e-γ collision and discuss the possibility to detect this new particle in the TeV energy e+e-collider(LC).The results show that the production cross section of the new heavy gauge boson Z' is in the range of 10.08fb～84.5fb,and the cross section in the LRTH model is bigger than that in the SU(3) simple group model.The sufficient typical events could be assumed in future high energy LC experiments.展开更多
基金Supported in Part by the National Natural Science Foundation of China under Grant No.10775039 the Foundation of He'nan Educational Committee under Grant No.2009B140003
基金Supported by the National Natural Science Foundation of China under Grant Nos. 10975047 and 10979008
文摘At the CERN large hadron collider (LHC), production of the Higgs boson in association with Z or W bosons provides a dramatic experimental signal for detecting the standard model (SM) Higgs boson. In this paper, we consider the contributions of the left-right twin Higgs (LRTH) model to the processes q()'→Z(W)H. Our numerical results show that, in the favorable parameter spaces, the cross sections deviate distinctly from the predictions of the SM. The possible signals of the LRTH model can be detected via these processes at the LHC experiments.
基金Supported by the National Natural Science Foundation of China under Grant No.U1404113the Aid Project for the Mainstay Young Teachers in Henan Provincial Institutions of Higher Education of China under Grant Nos.2016GGJS-135,2014GGJS-283Colleges and Universities in Henan Province Key Scientific Research Project for 2016(16B140002)
文摘In the framework of the left-right twin Higgs(LRTH) model, we study the Higgs boson and single top quark associated production at the LHC. We investigate the processes pp → thj, pp → thˉb and pp → th W at the 8(14) Te V LHC and find that the production cross sections of the three processes can be enhanced at different levels. Among them,the production cross section of the process pp → thˉb is enhanced significantly due to the contribution of the new particles predicted by the LRTH model.
基金Supported by National Natural Science Foundation of China (10975067)Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP) (200801650002)+1 种基金Natural Science Foundation of Liaoning Scientific Committee (20082148)Foundation of Liaoning Educational Committee (2007T086)
文摘The left-right twin Higgs （LRTH） model predicts the existence of the neutral Higgs bosons （h, φ0）, which can be produced in pairs （φ0φ0, hh, φ0h） via γγ collisions at the next generation e＋eInternational Linear Collider （ILC）. Our numerical results show that the production cross section of the neutral Higgs boson pair φ0φ0 can reach 8.8 fb. The subprocess γγ → φ0φ0 might be used to test the LRTH model in future ILC experiments.
文摘The left-right twin Higgs model contains a new vector-like heavy top quark, which mixes with the SM- like top quark. In this work, we studied the single vector-like top partner production via process e-γ→ve Tb at the International Linear Collider. We calculated the production cross section at tree level and displayed the relevant differential distributions. The result shows that there will be 125 events produced each year with s=2 TeV and the integrated luminosity Lint ≈500 fb-1, and the b-quark tagging and the relevant missing energy ET cut will be helpful to detect this new effect.
基金supported in part by the National Natural Science Foundation of China (Grant Nos. 10775039 and 10975047)
文摘In the framework of the left-right twin Higgs model, we study pair production of the right-handed neutrinos at the International Linear Collider (ILC) and the CERN Large Hadron Collider (LHC). Our numerical results show that the production cross section of the process e+e→N N is at the level of several tens fb at the ILC. However, the resonance production cross section can be significantly enhanced to the order of pb. The pair production cross section for the right-handed neutrinos is the level of several hundreds of fb at the LHC. In general, pair production of right-handed neutrinos gives rise to 2l+4j signal without missing energy. As long as the right-handed neutrinos are not too heavy, we conclude that its pair production might be used to test for the left-right twin Higgs model at the future ILC and LHC experiments.
基金supported by the National Natural Science Foundation of China(Grant No.11147193)
文摘In the framework of the left-right twin Higgs(LRTH) model,we study the possibilities to detect the new Z boson at the Tevatron and LHC.First,using p p collision data collected by the D0 and CDF II detectors,we find that the LRTH Z boson is excluded with masses below 940 GeV.Then we search for signatures of the Z boson at the LHC from the analysis of some distributions for p p →μ+μ- + X,such as the number of events,the differential cross section of the dimuon invariant mass,the distributions of the transverse momentum and the forward-backward charge asymmetry.We do our calculation for two typical values of the LHC center of mass energy(7 and 14 TeV).The numerical results show that,by applying convenient cuts on some of the observables,the dimuon invariant mass and final particle pT distributions can reveal the presence of the heavy neutral gauge boson Z contribution in the LRTH model.
基金Supported by the National Natural Science Foundation of China(11775012,11675147)the Fundamental Research Cultivation Fund for Young Teachers of Zhengzhou University(JC202041040)the Academic Improvement Project of Zhengzhou University。
文摘The decay t→cV(V=γ,Z,g)processes in mirror twin Higgs models with colorless top partners are studied in this paper.We report that the branchi ng ratios of these decays can strongly affect the standard model expectations in some parameter spaces and may be detectable according to the current precision electroweak measurements.Thus,constraints on the model parameters may be obtained from the branching fraction of the decay processes,which may serve as a robust detection tool for this new physics model.
基金Supported by the Scientific Research Key Project of the Education Department of Henan under Grant Nos.13A140113 and 12A140011Zhoukou Shizhuan Boshi Chuangxin under Grant No.20121039
文摘In the context of the left-right twin Higgs (LRTH) model,we have studied the charged Higgs bosons production processes e^+e^-(γγ)→tφ~at the International Linear Collider (ILC).It is found that the cross sections of these two processes could reach a few fb with reasonable parameter values.With the yearly integrated luminosity of L=500 fb-1 expected at the ILC,one could collect hundreds up to thousands of charged Higgs events via these two processes.Therefore,our researches in this paper can help us search for charged Higgs bosons,and furthermore,to test the LRTH model.
基金Support by a grant from Henan Institute of Science and Technology (06040)。
文摘In the context of the SU(3) simple group model and the Left-Right twin Higgs(LRTH) model,we study the single production of the new gauge boson Z' via e-γ collision and discuss the possibility to detect this new particle in the TeV energy e+e-collider(LC).The results show that the production cross section of the new heavy gauge boson Z' is in the range of 10.08fb～84.5fb,and the cross section in the LRTH model is bigger than that in the SU(3) simple group model.The sufficient typical events could be assumed in future high energy LC experiments.
