Electroweak Radiative Corrections for Collider Physics

Denner, Ansgar; Dittmaier, Stefan

doi:10.48550/arxiv.1912.06823

Cited by 22 publications

(73 citation statements)

References 570 publications

(1,392 reference statements)

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“…Here, following the standard procedure and notation of Refs. [144][145][146][147], we have reduced the vector and tensor integrals via the Passarino-Veltman method [147] to the scalar one-loop integrals B l and C l,lm , which can be further decomposed into the basic scalar functions A 0 , B 0 , and C 0 . However, as the package FormCalc does not require such a further reduction, we have expressed our results in terms of B l and C l,lm instead of the more basic ones to save CPU time.…”

Section: Two-body Decay T → Cgmentioning

confidence: 99%

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Rare top-quark decays $t \to cg(g)$ in the aligned two-Higgs-doublet model

Cai¹,

Funatsu²,

Li³

et al. 2022

Preprint

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We update the Standard Model predictions for the branching ratios of the rare top-quark decays t → cg(g), and evaluate the maximum rates that can be reached in the aligned as well as in the four conventional two-Higgs-doublet models (2HDMs) with Z 2 symmetries. Taking into account the relevant constraints on the model parameters from precision flavour observables, we find that the branching ratios of t → cg and t → cgg decays can reach up to 3.36 × 10 −9 and 2.95 × 10 −9 respectively, being therefore of the same order, in the aligned 2HDM (A2HDM). This is obviously different from the SM case, where the predicted branching ratio of the three-body decay t → cgg is about two orders of magnitude larger than that of the two-body decay t → cg. On the other hand, compared with the SM predictions, no significant enhancements are observed in the four conventional 2HDMs with Z 2 symmetries for the branching ratios of these two decays. Nevertheless, the predicted branching ratios of t → cg and t → cgg decays in the A2HDM are still out of the expected sensitivities of the future HL-LHC and FCC-hh.

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Section: Two-body Decay T → Cgmentioning

confidence: 99%

“…These functions can be further decomposed into the basic scalar one-loop integrals A 0 , B 0 , C 0 , and D 0 ; see Refs. [144][145][146][147] for details.…”

mentioning

confidence: 99%

Rare top-quark decays $t \to cg(g)$ in the aligned two-Higgs-doublet model

Cai¹,

Funatsu²,

Li³

et al. 2022

Preprint

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show abstract

“…The results presented here have been obtained with the COLI mode throughout. In all computations, the complex-mass scheme [23,[44][45][46] is utilised.…”

Section: Details and Validationmentioning

confidence: 99%

Full NLO predictions for vector-boson scattering into Z bosons and its irreducible background at the LHC

Denner,

Franken,

Pellen

et al. 2021

Preprint

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Vector-boson scattering into two Z bosons at the LHC is a key channel for the exploration of the electroweak sector of the Standard Model. It allows for the full reconstruction of the scattering process but at the price of a huge irreducible background. For the first time, we present full next-to-leading-order predictions for pp → e + e − µ + µ − jj + X including all electroweak and QCD contributions for vector-boson scattering signal and irreducible background. The results are presented in the form of cross sections and differential distributions. A particular emphasis is put on the newly computed O α 2 s α 5 corrections.

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“…due to the presence of intermediate resonances or the need to account for QCD jets accompanying the desired signal. For an extensive recent review on EW corrections for collider physics see [2].…”

Section: Introductionmentioning

confidence: 99%

Higher-order EW corrections in ZZ and ZZj production at the LHC

Bothmann,

Napoletano,

Schönherr

et al. 2021

Preprint

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We consider the production of a pair of Z bosons at the LHC and study the inclusion of EW corrections in theoretical predictions at fixed order and based on multijet-merged parton-shower simulations. To this end we present exact NLO EW results for pp → e + e − µ + µ − , and, for the first time, for pp → e + e − µ + µ − j, and compare them to the EW virtual and NLL Sudakov approximation. We then match the exact NLO EW result to the resummed Sudakov logarithms to achieve an improved NLO EW + NLL EW exp sud result. Further, we discuss the inclusion of the above EW corrections in MePs@Nlo event simulations in the framework of the Sherpa event generator. We present detailed phenomenological predictions for inclusive ZZ and ZZj production taking into account the dominant EW corrections through the EW virtual approximation, as well as through (exponentiated) EW Sudakov logarithms.

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Electroweak Radiative Corrections for Collider Physics

Cited by 22 publications

References 570 publications

Rare top-quark decays $t \to cg(g)$ in the aligned two-Higgs-doublet model

Rare top-quark decays $t \to cg(g)$ in the aligned two-Higgs-doublet model

Full NLO predictions for vector-boson scattering into Z bosons and its irreducible background at the LHC

Higher-order EW corrections in ZZ and ZZj production at the LHC

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