The gluon beam function at two loops

Gaunt, Jonathan R.; Stahlhofen, Maximilian; Tackmann, Frank J.

doi:10.1007/jhep08(2014)020

Cited by 85 publications

(152 citation statements)

References 69 publications

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“…[30]. The beam function B [31,32], the jet function J i [33,34] and the soft function S N for jets [35] and for the massive case [36] are all known to the required NNLO level. The results of eq.…”

Section: Review Of the Leading-power Factorization Theoremmentioning

confidence: 99%

Power corrections in the N -jettiness subtraction scheme

Boughezal¹,

Liu²,

Petriello³

2017

J. High Energ. Phys.

105

143

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Abstract:We discuss the leading-logarithmic power corrections in the N -jettiness subtraction scheme for higher-order perturbative QCD calculations. We compute the next-toleading order power corrections for an arbitrary N -jet process, and we explicitly calculate the power correction through next-to-next-to-leading order for color-singlet production for both qq and gg initiated processes. Our results are compact and simple to implement numerically. Including the leading power correction in the N -jettiness subtraction scheme substantially improves its numerical efficiency. We discuss what features of our techniques extend to processes containing final-state jets.

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Section: Review Of the Leading-power Factorization Theoremmentioning

confidence: 99%

Power corrections in the N -jettiness subtraction scheme

Boughezal¹,

Liu²,

Petriello³

2017

J. High Energ. Phys.

105

143

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“…Realizing this, various next-to-next-to-leading order jet and beam functions were calculated bypassing the use of the more complicated collinear SCET Feynman rules [115][116][117][118][119]. It was also pointed out that jet and beam functions can be calculated directly from the QCD splitting functions [120] with proper phase space (P S) integrations.…”

Section: Jhep05(2016)023mentioning

confidence: 99%

Towards the understanding of jet shapes and cross sections in heavy ion collisions using soft-collinear effective theory

Chien

Vitev

2016

J. High Energ. Phys.

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We calculate the jet shape and the jet cross section in heavy ion collisions using soft-collinear effective theory (SCET) and its extension with Glauber gluon interactions in the medium (SCET G ). We use the previously developed framework to systematically resum the jet shape at next-to-leading logarithmic accuracy, and we consistently include the medium modification by incorporating the leading order medium-induced splitting functions. The calculation provides, for the first time, a quantitative understanding of the jet shape modification measurement in lead-lead collisions at √ s NN = 2.76 TeV at the LHC. The inclusive jet suppression is also calculated within the same framework beyond the traditional concept of parton energy loss, and the dependence on the centrality, the jet radius and the jet kinematics is examined. In the end we present predictions for the anticipated jet shape and cross section measurements in lead-lead collisions at √ s NN ≈ 5.1 TeV at the LHC.

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“…[67,68] and the two-loop beam function of Ref. [69,70]. The corresponding two-loop soft functions are also known for zero-jettiness [71,72] and for general Njettiness [73].…”

Section: Introductionmentioning

confidence: 99%

Color-singlet production at NNLO in MCFM

et al. 2016

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We present the implementation of several colorsinglet final-state processes at Next-to-Next-to Leading Order (NNLO) accuracy in QCD to the publicly available parton-level Monte Carlo program MCFM. Specifically we discuss the processesDecays of the unstable bosons are fully included, resulting in a flexible fully differential Monte Carlo code. The NNLO corrections have been calculated using the non-local N -jettiness subtraction approach. Special attention is given to the numerical aspects of running MCFM for these processes at this order. We pay particular attention to the systematic uncertainties due to the power corrections induced by the N -jettiness regularization scheme and the evaluation time needed to run the hybrid openMP/MPI version of MCFM at NNLO on multiprocessor systems.

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The gluon beam function at two loops

Cited by 85 publications

References 69 publications

Power corrections in the N -jettiness subtraction scheme

Power corrections in the N -jettiness subtraction scheme

Towards the understanding of jet shapes and cross sections in heavy ion collisions using soft-collinear effective theory

Color-singlet production at NNLO in MCFM

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