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  • 學位論文

非粒子效應對希格斯玻色子散射之么正限制的影響

Unparticle Effects on Unitarity Constraints From Higgs Boson Scattering

指導教授 : 何小剛

摘要


我們在這篇論文中研究非粒子效應對希格斯玻色子散射之么正限制的影響。首先我們很快的瀏覽了標準模型,其次從尺寸不變理論的觀點介紹非粒子並它和席格斯粒子的交互作用。接著我們陳述量子理論中的么正條件如何限制粒子的散射過程。我們便應用這個「么正限制」 在兩個席格斯粒子透過交換純量非粒子的散射過程上,以此來研究非粒子的效應。我們發現當非粒子的量綱 du 較小與其臨界值Λu相對較大時,原本標準模型中席格斯粒子質量的么正上界會有明顯的提升。

並列摘要


In this thesis we study the unparticle effects on the unitarity constraint of two-body Higgs boson scattering. After a brief review on the Standard Model, we introduce the unparticle stuff and its interaction with Higgs boson from effective field theory. Then we present the general unitarity condition in the quantum theory which can give constraints on the scattering amplitude. By applying unitarity constraint on the process of two Higgs scattering through exchange of the scalar unparticle, the constraints of the unparticle effects are given. It is found that the unitarity upper bound of Higgs boson mass from the Standard Model can be loosen at the region of small unparticle scale dimension du or comparably large unparticle cut-off Λu.

參考文獻


[24] Xiao-Gang He and C.C. Wen, Phys. Rev. D78 ,017301(2008)
[46] Arvind Rajaraman, arXiv:0806.1533[hep-ph]
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