Non-factorizable corrections to W-pair production: Methods and analytic results

Beenakker, W.

doi:10.1016/s0550-3213(97)00628-7

Cited by 22 publications

(17 citation statements)

References 11 publications

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“…The simple INF formula for δ N F of ref [18],. leads to δM W ≃ −Γ W MeV, in perfect agreement with the complete calculations of the NF corrections, see refs [24][25][26][27]…”

supporting

confidence: 86%

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On theoretical uncertainties of the W boson mass measurement at LEP2

et al. 2001

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We discuss theoretical uncertainties of the measurement of the W boson mass at LEP2 energies, reconstructed with the help of the tandem of the Monte Carlo event generators KoralW and YFSWW3. Exploiting numerical results obtained with these programs, and the existing knowledge in the literature, we estimate that the theoretical uncertainty of the W mass due to electroweak corrections, as reconstructed at LEP2 with the help of these programs, is ∼ 5 MeV. Since we use certain idealized event selections and a simple M W -fitting procedure, our numerical exercises can be (should be) repeated for the actual "M W extraction methods" of the LEP2 measurements, using KoralW and YFSWW3 or other Monte Carlo programs.To be submitted to Physics Letters B ⋆

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“…The simple INF formula for δ N F of ref [18],. leads to δM W ≃ −Γ W MeV, in perfect agreement with the complete calculations of the NF corrections, see refs [24][25][26][27]…”

supporting

confidence: 86%

“…The size of the NF effect of ∼ 5 MeV requires some explanation, as the genuine NF effect in M W is in fact only about ∼ −1 MeV; see refs. [24][25][26][27] and the discussion of the INF ansatz in ref. [18] (see also more discussion in the following).…”

mentioning

confidence: 99%

On theoretical uncertainties of the W boson mass measurement at LEP2

et al. 2001

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“…For more details we refer to Refs. [63][64][65][66]. Evidently, the same approximation has to be applied also to the real corrections.…”

Section: Pole Contribution and Soft Gluon Approximationmentioning

confidence: 99%

Production of heavy Higgs bosons and decay into top quarks at the LHC

et al. 2016

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We investigate the production of heavy, neutral Higgs boson resonances and their decays to top-quark top-antiquark (tt) pairs at the Large Hadron Collider (LHC) at next-to-leading order (NLO) in the strong coupling of quantum chromodynamics (QCD). The NLO corrections to heavy Higgs boson production and the Higgs-QCD interference are calculated in the large m t limit with an effective Kfactor rescaling. The nonresonant tt background is taken into account at NLO QCD including weakinteraction corrections. In order to consistently determine the total decay widths of the heavy Higgs bosons, we consider for definiteness the type-II two-Higgs-doublet extension of the standard model and choose three parameter scenarios that entail two heavy neutral Higgs bosons with masses above the tt threshold and unsuppressed Yukawa couplings to top quarks. For these three scenarios we compute, for the LHC operating at 13 TeV, the tt cross section and the distributions of the tt invariant mass, of the transverse top-quark momentum and rapidity, and of the cosine of the Collins-Soper angle with and without the two heavy Higgs resonances. For selected M tt bins we estimate the significances for detecting a heavy Higgs signal in the tt dileptonic and lepton plus jets decay channels.

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“…Beyond the stable-top approximation, the one-loop corrections split in a gauge-invariant way into so-called factorizable and non-factorizable corrections [16,17]. Factorizable corrections correspond to (on-shell) corrections to either the production or the decay part of the process.…”

Section: Introductionmentioning

confidence: 99%

Production-decay interferences at next-to-leading order in QCD fort-channel single-top-quark production

2010

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We present a calculation of O(α s ) contributions to the process of t-channel singletop production and decay, which include virtual and real corrections arising from interference of the production and decay subprocesses. The calculation is organized as a simultaneous expansion of the matrix elements in the couplings α ew , α s and the virtuality of the intermediate top quark, (p 2 t − m 2 t )/m 2 t ∼ Γ t /m t , and extends earlier results beyond the narrow-width approximation.

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Non-factorizable corrections to W-pair production: Methods and analytic results

Cited by 22 publications

References 11 publications

On theoretical uncertainties of the W boson mass measurement at LEP2

On theoretical uncertainties of the W boson mass measurement at LEP2

Production of heavy Higgs bosons and decay into top quarks at the LHC

Production-decay interferences at next-to-leading order in QCD fort-channel single-top-quark production

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