Measurement of top quark polarization in 
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Self Cite

“…[34]. Studies of Z → ℓℓ data indicate that a range of variation between factors of 1 2 and 2 of this scale covers the mismodeling [15].…”

Section: Out-of-cone Correctionmentioning

confidence: 99%

Section: Combination Of Run II Dilepton Measurementsmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Combination of D0 measurements of the top quark mass

Abazov¹,

Abbott²,

Acharya³

et al. 2017

Self Cite

“…The mass of the top quark has been directly measured with a precision of less than 0.43% in a single measurement [8]. The Tevatron combination currently yields a top quark mass of 174.34 ± 0.64 GeV [9].…”

Section: Introductionmentioning

confidence: 99%

Measurement of the inclusivett¯production cross section inpp¯collision

Abazov¹,

Abbott²,

Acharya³

et al. 2016

Self Cite

The inclusive cross section of top quark-antiquark pairs produced in pp collisions at √ s = 1.96 TeV is measured in lepton+jets and dilepton decay channels. The data sample corresponds to 9.7 fb −1 of integrated luminosity recorded with the D0 detector during Run II of the Fermilab Tevatron Collider. Employing multivariate analysis techniques we measure the cross section in the two decay channels and we perform a combined cross section measurement. For a top quark mass of 172.5 GeV, we measure a combined inclusive top quark-antiquark pair production cross section of σ tt = 7.26 ± 0.13 (stat.) +0.57−0.50 (syst.) pb which is consistent with standard model predictions. We also perform a likelihood fit to the measured and predicted top quark mass dependence of the inclusive cross section, which yields a measurement of the pole mass of the top quark. The extracted value is mt = 172.8 ± 1.1 (theo.) +3.3 −3.1 (exp.) GeV.

“…For m W = 80.39 GeV, m t = 174.98 GeV [64], Γ t→bW is approximately 1.5 GeV. This being the most prominent decay mode of the top quark any branching ratio can be given as…”

Section: T → Cγmentioning

confidence: 99%

Rare top decays in minimal and nonminimal universal extra dimension models

Dey

Jha

2016

The flavour changing decays of the top quark are severely suppressed in the Standard Model by virtue of the Glashow-Iliopoulos-Maiani mechanism. Many beyond Standard Model extensions predict the decay rates at a level that is observable in the LHC. We perform a complete one-loop calculation of the flavour changing top quark decays t → cγ and t → ch in the universal extra dimensional model. Apart from considering the decay rates in the minimal version of the model, we also calculate the rates in the non-minimal scenario where the presence of boundary localised terms interestingly modify the set-up. We find that the decay rates in the minimal variant of the model do not change much from their Standard Model values. In the non-minimal version of this model, these decay rates can be higher for specific choices of the boundary localised parameters for a certain range of inverse compactification radius. But these model parameters lead to Kaluza-Klein particle masses that are in tension with various searches at the LHC.