Inferring the nature of the boson at 125-126 GeV

被引：24
|
作者：
Menon, Arjun [1 ]
Modak, Tanmoy [2 ]
Sahoo, Dibyakrupa [2 ]
Sinha, Rahul [2 ]
Cheng, Hai-Yang [3 ]
机构：
[1] Univ Oregon, Inst Theoret Sci, Eugene, OR 97403 USA
[2] Inst Math Sci, Chennai 600113, Tamil Nadu, India
[3] Acad Sinica, Inst Phys, Taipei 11529, Taiwan
来源：
PHYSICAL REVIEW D | 2014年 / 89卷 / 09期
关键词：
The presence of a bosonic resonance near 125 GeV has been firmly established at the Large Hadron; Collider. Understanding the exact nature of this boson is a priority. The task now is to verify whether the; boson is indeed the scalar Higgs as proposed in the Standard Model of particle physics; or something more; esoteric as proposed in the plethora of extensions to the Standard Model. This requires a verification that; the boson is a J(PC)=0(dagger dagger) state with couplings precisely as predicted by the Standard Model. Since a non-Standard; Model boson can in some cases mimic the Standard Model Higgs in its couplings to gauge; bosons; it is essential to rule out any anomalous behavior in its gauge couplings. We present a step by step; methodology to determine the properties of this resonance without making any assumptions about its; couplings. We present the analysis in terms of uniangular distributions which lead to angular asymmetries; that allow for the extraction of the couplings of the 125; 126 GeV resonance to Z bosons. We show; analytically and numerically; that these asymmetries can unambiguously confirm whether the new boson is; indeed the Standard Model Higgs boson; HIGGS-BOSON; CP-DETERMINATION; SPIN-PARITY; GAMMA-GAMMA; DECAYS; TAU;
D O I：
10.1103/PhysRevD.89.095021
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
引用
收藏
页数：16
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