A comparison of direct and indirect determinations of the masses of the Higgs Boson and the top quark

作者：Field J H^*

来源：Chinese Physics C, 2017, 41(10): 103001.

DOI：10.1088/1674-1137/41/10/103001

• standard electroweak model
• LEP
• SLC and LHC data
• Z-decays
• Higgs boson and top quark masses

The indirect estimation of the Higgs Boson mass from electroweak radiative corrections within the Standard Model is compared with the directly measured value obtained by the ATLAS and CMS Collaborations at the CERN LHC collider. Treating the direct measurement of m(H) as input, the Standard Model indirect estimation of the top-quark mass is also obtained and compared with its directly measured value. A model-independent analysis finds an indirect value of m(H) of similar or equal to 70 GeV, below the directly measured value of 125.7 +/- 0.4 GeV and an indirect value: m(t) = 177.3 +/- 1.0 GeV, above the directly measured value: 173.21 +/- 0.87 GeV. A goodness-of-fit test to the Standard Model using all Z-pole observables and m(w) has a chi(2) probability of similar or equal to 2%. The reason why probability values about a factor of ten larger than this, and indirect estimates of mH about 30 GeV higher, have been obtained in recent global fits to the same data is recalled.

• 出版日期2017-10