W-boson plus jet differential distributions at NNLO in QCD

Boughezal, Radja; Liu, Xiaohui; Petriello, Frank

doi:10.48550/arxiv.1602.06965

Cited by 25 publications

(46 citation statements)

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“…We consider leading jet p T distributions in inclusive (at least one jet is required) and exclusive (exactly one jet is required) jet production, as well as inclusive leading jet rapidity distributions. The inclusive distributions have previously been compared to NNLO QCD predictions in [20], however exclusive distributions and ratios of distributions were not considered.…”

Section: Atlas 7 Tev Standard Cutsmentioning

confidence: 99%

“…Precision QCD predictions for the production of a vector boson in association with a jet have advanced considerably in recent years with the completion of fixed-order next-to-next-to-leading (NNLO) QCD calculations [17][18][19][20][21][22][23][24][25][26], which are now being matched to resummation results [27,28] to extend their validity across a wider kinematic range. These are complemented by NLO electroweak corrections [29][30][31], which are particularly relevant at large transverse momenta.…”

Section: Introductionmentioning

confidence: 99%

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Vector boson production in association with a jet at forward rapidities

et al. 2019

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Final states with a vector boson and a hadronic jet allow one to infer the Born-level kinematics of the underlying hard scattering process, thereby probing the partonic structure of the colliding protons. At forward rapidities, the parton collisions are highly asymmetric and resolve the parton distributions at very large or very small momentum fractions, where they are less well constrained by other processes. Using theory predictions accurate to next-to-next-to-leading order (NNLO) in QCD for both and production in association with a jet at large rapidities at the LHC, we perform a detailed phenomenological analysis of recent LHC measurements. The increased theory precision allows us to clearly identify specific kinematical regions where the description of the data is insufficient. By constructing ratios and asymmetries of these cross sections, we aim to identify possible origins of the deviations, and highlight the potential impact of the data on improved determinations of parton distributions. Electronic supplementary material The online version of this article (10.1140/epjc/s10052-019-7010-2) contains supplementary material, which is available to authorized users.

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Section: Atlas 7 Tev Standard Cutsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Vector boson production in association with a jet at forward rapidities

et al. 2019

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“…The differential subtractions are effectively the basis of the Geneva method to match resummed NNLO calculation with parton showers [47,48]. Implemented as a global subtraction, they have been applied to calculate W/Z/H+ jet at NNLO [44,45,49,50], and have been implemented in MCFM for color-singlet production [51][52][53]. They have also been applied to single-inclusive jet production in ep collisions [54].…”

Section: Introductionmentioning

confidence: 99%

Subleading power corrections for N -jettiness subtractions

et al. 2017

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The N -jettiness observable TN provides a way of describing the leading singular behavior of the N -jet cross section in the τ = TN /Q → 0 limit, where Q is a hard interaction scale. We consider subleading power corrections in the τ 1 expansion, and employ soft-collinear effective theory to obtain analytic results for the dominant αsτ ln τ and α 2 s τ ln 3 τ subleading terms for thrust in e + e − collisions and 0-jettiness for qq-initiated Drell-Yan-like processes at hadron colliders. These results can be used to significantly improve the numerical accuracy and stability of the N -jettiness subtraction technique for performing fixed-order calculations at NLO and NNLO. They reduce the size of missing power corrections in the subtractions by an order of magnitude. We also point out that the precise definition of N -jettiness has an important impact on the size of the power corrections and thus the numerical accuracy of the subtractions. The sometimes employed definition of N -jettiness in the hadronic center-of-mass frame suffers from power corrections that grow exponentially with rapidity, causing the power expansion to deteriorate away from central rapidity. This degradation does not occur for the original N -jettiness definition, which explicitly accounts for the boost of the Born process relative to the frame of the hadronic collision, and has a well-behaved power expansion throughout the entire phase space. Integrated over rapidity, using this N -jettiness definition in the subtractions yields another order of magnitude improvement compared to employing the hadronicframe definition.

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“…N -jettiness subtractions provide a powerful and simple method that is in principle applicable for an arbitrary number of jets in the final state. They have been applied to W/Z/H/γ+ jet at NNLO [7,[11][12][13][14], as well as inclusive photon production [15], and have been implemented in MCFM8 for colorsinglet production [16][17][18][19]. They have also been used to calculate single-inclusive jet production in ep collisions at NNLO [20].…”

Section: Introductionmentioning

confidence: 99%

N -jettiness subtractions for gg→H at subleading power

et al. 2018

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N-jettiness subtractions provide a general approach for performing fully-differential next-to-next-toleading order (NNLO) calculations. Since they are based on the physical resolution variable N-jettiness, T N , subleading power corrections in τ ¼ T N =Q, with Q a hard interaction scale, can also be systematically computed. We study the structure of power corrections for 0-jettiness, T 0 , for the gg → H process. Using the soft-collinear effective theory we analytically compute the leading power corrections α s τ ln τ and α 2 s τln 3 τ (finding partial agreement with a previous result in the literature), and perform a detailed numerical study of the power corrections in the gg, gq, and qq channels. This includes a numerical extraction of the α s τ and α 2 s τ ln 2 τ corrections, and a study of the dependence on the T 0 definition. Including such power suppressed logarithms significantly reduces the size of missing power corrections, and hence improves the numerical efficiency of the subtraction method. Having a more detailed understanding of the power corrections for both qq and gg initiated processes also provides insight into their universality, and hence their behavior in more complicated processes where they have not yet been analytically calculated.

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W-boson plus jet differential distributions at NNLO in QCD

Cited by 25 publications

References 0 publications

Vector boson production in association with a jet at forward rapidities

Vector boson production in association with a jet at forward rapidities

Subleading power corrections for N -jettiness subtractions

N -jettiness subtractions for gg→H at subleading power

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