A subtraction scheme for computing QCD jet cross sections at NNLO: integrating the iterated singly-unresolved subtraction terms

Bolzoni, Paolo; Somogyi, G.; Trocsanyi, Z. L.

doi:10.1007/jhep01(2011)059

Cited by 57 publications

(62 citation statements)

References 55 publications

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“…This has been possible thanks to the development of subtraction schemes [62][63][64][65][66][67][68][69][70], slicing methods [60,61,71] and the calculation of several two-to-two virtual amplitudes [72][73][74][75][76][77][78][79][80][81][82][83][84][85][86][87][88][89][90][91]. As far as top-quark pair production is concerned, besides our own calculation [10,92] only partial results are known at the differential level [93,94]; there is also progress at the level of total crosssection [95] obtained with slicing methods.…”

Section: Jhep05(2016)034mentioning

confidence: 99%

NNLO QCD predictions for fully-differential top-quark pair production at the Tevatron

Czakon

Fiedler

Heymes

et al. 2016

J. High Energ. Phys.

125

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We present a comprehensive study of differential distributions for Tevatron top-pair events at the level of stable top quarks. All calculations are performed in NNLO QCD with the help of a fully differential partonic Monte-Carlo and are exact at this order in perturbation theory. We present predictions for all kinematic distributions for which data exists. Particular attention is paid on the top-quark forward-backward asymmetry which we study in detail. We compare the NNLO results with existing approximate NNLO predictions as well as differential distributions computed with different parton distribution sets. Theory errors are significantly smaller than current experimental ones with overall agreement between theory and data.

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Section: Jhep05(2016)034mentioning

confidence: 99%

NNLO QCD predictions for fully-differential top-quark pair production at the Tevatron

Czakon

Fiedler

Heymes

et al. 2016

J. High Energ. Phys.

125

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“…Refs. [10][11][12][13][14][15][16] and references therein). The purely weak corrections of O (α 2 s α) have been calculated for the single-jet-inclusive cross section in Ref.…”

Section: Introductionmentioning

confidence: 99%

Weak radiative corrections to dijet production at hadron colliders

Dittmaier

Huss

Speckner

2012

J. High Energ. Phys.

126

177

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Abstract:We present the calculation of the most important electroweak corrections to dijet production at the LHC and the Tevatron, comprising tree-level effects of O (α s α, α 2 ) and weak loop corrections of O (α 2 s α). Although negligible for integrated cross sections, these corrections can reach 10−20% in the TeV range for transverse jet momenta k T . Our detailed discussion of numerical results comprises distributions in the dijet invariant mass and in the transverse momenta of the leading and subleading jets. We find that the weak loop corrections amount to about −12% and −10% for leading jets with k T ∼ 3 TeV at the 14 TeV LHC and k T ∼ 800 GeV at the Tevatron, respectively. The electroweak tree-level contributions are of the same generic size and typically positive at the LHC and negative at the Tevatron at high energy scales. Generally the corrections to the dijet invariant mass distributions are smaller by at least a factor of two as compared to the corresponding reach in the k T distributions, because unlike the k T spectra the invariantmass distributions are not dominated by the Sudakov regime at high energy scales.

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“…There are several variants of the subtraction method at NLO and beyond [1,2,3,4,5,6,7,8,9,10,11], which involve treating separately real and virtual contributions. Besides the computational difficulty related to the fact that the final-state phase-space of the different contributions involves different number of particles, building these counter-terms represents a challenge and introduces a potential bottleneck to efficiently carry out the infrared (IR) subtraction for multi-leg multi-loop processes.…”

Section: The Loop-tree Dualitymentioning

confidence: 99%

Applications of the loop-tree duality

Rodrigo¹,

Driencourt-Mangin²,

Sborlini³

et al. 2016

Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2016)

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We describe a new method to perform NLO calculations, combining real and virtual amplitudes at the integrand level, with a fully local compensation between them in the IR, and between the virtual integrand and properly defined counter-terms in the UV, in such a way that physical observables can be computed in 4 dimensions. One of the advantages of the method is that all the scattering amplitudes are integrated simultaneously, without the need for tensor reduction, or projection onto sets of master integrals. As such, it could offer great progress in the automation of NLO calculations, where the actual bottle-necks are the complexity of the analytical calculations for multi-leg processes, and the numerical stability of the result. Loops and Legs in Quantum Field Theory

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A subtraction scheme for computing QCD jet cross sections at NNLO: integrating the iterated singly-unresolved subtraction terms

Cited by 57 publications

References 55 publications

NNLO QCD predictions for fully-differential top-quark pair production at the Tevatron

NNLO QCD predictions for fully-differential top-quark pair production at the Tevatron

Weak radiative corrections to dijet production at hadron colliders

Applications of the loop-tree duality

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