Electroweak precision observables, new physics and the nature of a 126 GeV Higgs boson

被引：137
|
作者：
Ciuchini, Marco [1 ]
Franco, Enrico [2 ]
Mishima, Satoshi [2 ,3 ]
Silvestrini, Luca [2 ]
机构：
[1] Ist Nazl Fis Nucl, Sez Roma Tre, I-00146 Rome, Italy
[2] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy
[3] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 08期
基金：
欧洲研究理事会;
关键词：
LEP HERA and SLC Physics; Beyond Standard Model; Quark Masses and SM Parameters; Standard Model; VACUUM-POLARIZATION FUNCTIONS; SPIN-1/2 FERMION SCATTERING; HEAVY TOP CORRECTIONS; RADIATIVE-CORRECTIONS; STANDARD-MODEL; SEMIANALYTICAL PROGRAM; 2-LOOP CORRECTIONS; PAIR PRODUCTION; NEUTRAL-CURRENT; MUON LIFETIME;
D O I：
10.1007/JHEP08(2013)106
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We perform the fit of electroweak precision observables within the Standard Model with a 126 GeV Higgs boson, compare the results with the theoretical predictions and discuss the impact of recent experimental and theoretical improvements. We introduce New Physics contributions in a model-independent way and fit for the S, T and U parameters, for the epsilon(1,2,3,b) ones, for modified Zb (b) over bar couplings and for a modified Higgs coupling to vector bosons. We point out that composite Higgs models are very strongly constrained. Finally, we compute the bounds on dimension-six operators relevant for the electroweak fit.
引用
收藏
页数：45
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