Constraints of the Branching Ratio Rb on the Littlest Higgs Model

YUE Cong-Xing; WANG Wei

Chinese Physics C> 2005, Vol. 29> Issue(9) : 838-843

Constraints of the Branching Ratio Rb on the Littlest Higgs Model

YUE Cong-Xing ^, ,
WANG Wei

Department of Physics, Liaoning Normal University, Dalian 116029, China

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Abstract：
In the context of the littlest Higgs(LH) model, we study the contributions of the new particles to the branching ratio R_b of the Z→bb process. We find that the contributions mainly come from the vector-like quark Tand the gauge boson Z_H,B_H and depend on the free parameters f, c'and x_L. The precisely measured value of R_b can give severe constraints on these free parameters.

References

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YUE Cong-Xing and WANG Wei. Constraints of the Branching Ratio Rb on the Littlest Higgs Model[J]. Chinese Physics C, 2005, 29(9): 838-843.

YUE Cong-Xing and WANG Wei. Constraints of the Branching Ratio Rb on the Littlest Higgs Model[J]. Chinese Physics C, 2005, 29(9): 838-843. shu

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Received: 2005-01-17
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Constraints of the Branching Ratio Rb on the Littlest Higgs Model

Corresponding author: YUE Cong-Xing,

Department of Physics, Liaoning Normal University, Dalian 116029, China

Received Date: 2005-01-17

Accepted Date: 1900-01-01

Available Online: 2005-09-05

Abstract: In the context of the littlest Higgs(LH) model, we study the contributions of the new particles to the branching ratio R_b of the Z→bb process. We find that the contributions mainly come from the vector-like quark Tand the gauge boson Z_H,B_H and depend on the free parameters f, c'and x_L. The precisely measured value of R_b can give severe constraints on these free parameters.

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Constraints of the Branching Ratio Rb on the Littlest Higgs Model

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