A general method for the resummation of event-shape distributions in e
                            +
                            e
                            − annihilation

Banfi, Andrea; McAslan, Heather; Monni, Pier Francesco; Zanderighi, Giulia

doi:10.1007/jhep05(2015)102

Cited by 107 publications

(111 citation statements)

References 62 publications

(107 reference statements)

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“…In this Letter we propose a new method that solves the problem in transverse-momentum space and extends the framework of Refs. [25,26] to treat all observables affected by the aforementioned kinematic cancellations. We obtain a NNLL-accurate formula for p H t and match the result to the NNLO differential distribution for the first time.…”

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confidence: 99%

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Higgs Transverse-Momentum Resummation in Direct Space

2016

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We propose a new approach to the resummation of the transverse-momentum distribution of a high-mass color-singlet system in hadronic collisions. The resummation is performed in momentum space and is free of kinematic singularities at small transverse momentum. We derive a formula accurate at the next-to-nextto-leading-logarithmic level, and present the first matched predictions to next-to-next-to-leading order for Higgs-boson production in gluon fusion at the LHC. This method can be adapted to all observables featuring kinematic cancellations in the infrared region.

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confidence: 99%

“…The independent-emission amplitude squared and its phase space are parametrized in Eq. (1) as [25,26] …”

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confidence: 99%

Higgs Transverse-Momentum Resummation in Direct Space

2016

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“…[9] To achieve NNLL accuracy, we relax the kinematic assumptions made at NLL one by one: allowing one emission to roam in phase space, i.e. for a single hard-collinear or soft-wide angle emission to occur; allowing two emissions to be close in rapidity.…”

Section: Ares (Automated Resummer Of Event Shapes)mentioning

confidence: 99%

Resummed Results for Hadron Collider Observables

McAslan

2016

EPJ Web of Conferences

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Abstract. Event shapes are invaluable QCD tools for theoretical calculations and experimental measurements. We revise the definition of these observables in e + e − annihilation and in hadron collisions, and give a review of the state-of-the-art results for their resummation. Then we detail how recent work on the resummation of event shapes in electron-positron annihilation can provide us with the tools to extend resummation of generic hadronic event shapes to NNLL accuracy. We match our findings to fixed-order results at NNLO accuracy, showing the sizeable effects of resummation in the relevant regions of phase space.

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“…There exists already an automated resummation framework, CAESAR [8], for hadronic event shapes at NLL accuracy, and for a class of lepton-collider event shapes an extension to N 2 LL was recently achieved in ref. [54]. Also within SCET, automated N 2 LL resummation has been performed, so far not for event shapes, but for cross sections with electroweak bosons in the presence of a jet veto [55], using the automated fixed-order NLO code MadGraph5_aMC@NLO [56].…”

Section: Jhep06(2015)071mentioning

confidence: 99%

Factorization and resummation for transverse thrust

Becher

Tormo

2015

J. High Energ. Phys.

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Abstract:We analyze transverse thrust in the framework of Soft Collinear Effective Theory and obtain a factorized expression for the cross section that permits resummation of terms enhanced in the dijet limit to arbitrary accuracy. The factorization theorem for this hadron-collider event-shape variable involves collinear emissions at different virtualities and suffers from a collinear anomaly. We compute all its ingredients at the one-loop order, and show that the two-loop input for next-to-next-to-leading logarithmic accuracy can be extracted numerically, from existing fixed-order codes.

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A general method for the resummation of event-shape distributions in e + e − annihilation

Cited by 107 publications

References 62 publications

Higgs Transverse-Momentum Resummation in Direct Space

Higgs Transverse-Momentum Resummation in Direct Space

Resummed Results for Hadron Collider Observables

Factorization and resummation for transverse thrust

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