Two-loop O(αsGμmt2) corrections to the partial decay width of the Z0 into final states in the large top-mass limit

Fleischer, Jochem; Tarasov, O.V.; Jegerlehner, F.; Ra̧czka, Piotr A.

doi:10.1016/0370-2693(92)90909-n

Cited by 82 publications

(80 citation statements)

References 18 publications

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“…[17,22]. The two-loop terms were obtained following the lines of the analogous SM calculation that was performed by several groups, via different methods, in the early nineties [26]. The SM correction can be actually obtained by considering the SM Lagrangian in the limit of vanishing gauge coupling constants, the so-called gaugeless limit of the SM [27].…”

Section: Charged-higgs Contribution To R B Including Qcd Correctionsmentioning

confidence: 99%

QCD corrections in two-Higgs-doublet extensions of the standard model with minimal flavor violation

Degrassi¹,

Slavich²

2010

Phys. Rev. D

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We present the QCD corrections to R b and to the ∆B = 1 effective Hamiltonian in models with a second Higgs field that couples to the quarks respecting the criterion of Minimal Flavor Violation, thus belonging either to the (1, 2) 1/2 or to the (8, 2) 1/2 representation of SU (3) × SU (2) × U (1). After the inclusion of the QCD corrections, the prediction for R b becomes practically insensitive to the choice of renormalization scheme for the top mass, which for the type-I and type-II models translates in a more robust lower bound on tan β. The QCD-corrected determinations of R b and BR(B → X s γ) are used to discuss the constraints on the couplings of a (colored) charged Higgs boson to top and bottom quarks.

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Section: Charged-higgs Contribution To R B Including Qcd Correctionsmentioning

confidence: 99%

QCD corrections in two-Higgs-doublet extensions of the standard model with minimal flavor violation

Degrassi¹,

Slavich²

2010

Phys. Rev. D

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“…Due to the heavy top quark, two loop eects of O( 2 m 4 t ) are included with their full M H dependence [18], as well as O( s m 2 t ) corrections to the parameter [19] and to the Z ! b b vertex [20]. Threshold eects corresponding to O( 2 s m 2 t ) corrections are incorporated by making use of the detailed work of Fanchiotti, Kniehl and Sirlin [21].…”

Section: Radiative Correctionsmentioning

confidence: 99%

Implications of high precision experiments and the CDF top quark candidates

Erler

Langacker

1995

Phys. Rev. D

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“…In addition the Bhabha back OCR OutputThe determination of AFB was repeated using the selection previously published [1,2], based mainly 1 8 O C R O u t p u t 2Thc calculation has been done using the electroweak library of the MIZA program couplings shown in Table 8. Using these results together with the previous ALEPH measurements of the larization [14] from the 1989-1991 ALEPH data sample, to give improved results for the effective vector…”

Section: Z --> If P` Selection Systematicsmentioning

confidence: 99%