In the parameter space allowed by the electroweak precision measurement data, we consider the contributions of the new particles predicted by the littlest Higga model to the Higgs hoson associated production with top ...In the parameter space allowed by the electroweak precision measurement data, we consider the contributions of the new particles predicted by the littlest Higga model to the Higgs hoson associated production with top quark pair in the future high energy linear e^＋e^- collider （ILU）. We find that the contributions mainly come from the new gauge bosons ZH and BH. For reasonable values of the free parameters, the absolute value of the relative correction parameter δσ/σ^SM can be signiticanly large, which might be observed in the future ILU experiment with √S = 800 GeV.展开更多
In this paper, we study the production of the neutral top-pion （Πt^0） associated with a gauge boson at the LHC, i.e. pp →Πt^0V （V = g, W, Z, γ）. The cross section of pp→Πt^0g is at the level of 10^2 pb in th...In this paper, we study the production of the neutral top-pion （Πt^0） associated with a gauge boson at the LHC, i.e. pp →Πt^0V （V = g, W, Z, γ）. The cross section of pp→Πt^0g is at the level of 10^2 pb in the most parameter space. Such a process with the flavor-changing decay mode Πt^0→tc might provide viable signatures to detect rio at the LHC. The cross sections of other processes pp →→Πt^0W（Z,γ） distinguish the Higgs boson in the SM or MSSM from rio. are too small to detect Πt^0, which open a window to distinguish the Higgs boson in the SM or MSSM from Πt^0展开更多
基金The project supported in part by the Program for New Century Excellent Talents in Universities under Grant No, NCET-04-0290, Nations/Natural Science Foundation of China under Grant Nos. 90203005 and 1047S037, and the Natural Science Foundation of Lisoning Science Committee under Grant No. 20032101
文摘In the parameter space allowed by the electroweak precision measurement data, we consider the contributions of the new particles predicted by the littlest Higga model to the Higgs hoson associated production with top quark pair in the future high energy linear e^＋e^- collider （ILU）. We find that the contributions mainly come from the new gauge bosons ZH and BH. For reasonable values of the free parameters, the absolute value of the relative correction parameter δσ/σ^SM can be signiticanly large, which might be observed in the future ILU experiment with √S = 800 GeV.
基金The project supported by National Natural Science Foundation of China under Grant No. 10375017, the Excellent Youth Foundation of Henan Scientific Committee, and the Henan Innovation Project for University Prominent Reseaxch Talents
文摘In this paper, we study the production of the neutral top-pion （Πt^0） associated with a gauge boson at the LHC, i.e. pp →Πt^0V （V = g, W, Z, γ）. The cross section of pp→Πt^0g is at the level of 10^2 pb in the most parameter space. Such a process with the flavor-changing decay mode Πt^0→tc might provide viable signatures to detect rio at the LHC. The cross sections of other processes pp →→Πt^0W（Z,γ） distinguish the Higgs boson in the SM or MSSM from rio. are too small to detect Πt^0, which open a window to distinguish the Higgs boson in the SM or MSSM from Πt^0
