128 citations · 1.5k across the 55 of their papers we have counts for
59 papers
Jet functions for next-to-leading power factorization
Robin van Bijleveld, Jaco ter Hoeve, Eric Laenen +3
We discuss the factorization of scattering processes near partonic threshold at next-to-leading power (NLP) in the threshold variable , with . We review…
Infrared singularities and the collinear limits of multi-leg scattering amplitudes
Sebastian Jaskiewicz
Scattering amplitudes admit a factorised structure in special kinematic limits, such as the soft and collinear limits. In this work, we investigate the multi-particle collinear lim…
Infrared singularities and the collinear limits of multi-leg scattering amplitudes
Claude Duhr, Einan Gardi, Sebastian Jaskiewicz +2
Scattering amplitudes are expected to admit a factorised structure in special kinematic limits, such as the Regge, soft and collinear limits. However, less is known about the preci…
Next-to-leading power jet functions in the small-mass limit in QED
Robin van Bijleveld, Eric Laenen, Coenraad Marinissen +2
We investigate the factorization properties of the massive fermion form factor in QED, to next-to-leading power in the fermion mass, and up to two-loop order. For this purpose we d…
The Two-Loop Lipatov Vertex in QCD
Samuel Abreu, Giuseppe De Laurentis, Giulio Falcioni +3
High-energy factorization of 2 -> 2 amplitudes in QCD has been recently pushed to the next-to-next-to-leading logarithmic order by determining the three-loop gluon Regge trajectory…
Regge poles and cuts and the Lipatov vertex
Samuel Abreu, Giulio Falcioni, Einan Gardi +2
Scattering amplitudes in the high-energy limit can be described in terms of their singularity structure in the complex angular momentum plane, consisting of Regge poles and cuts. I…
Exponentiation of soft quark effects from the replica trick
Melissa van Beekveld, Leonardo Vernazza, Chris D. White
In this paper, we show that multiple maximally soft (anti-)quark and gluon emissions exponentiate at the level of either the amplitude or cross-section. We first show that such emi…
Factorization and resummation at next-to-leading-power
Leonardo Vernazza
We discuss recent progress concerning the resummation of large logarithms at next-to-leading power (NLP) in scattering processes such as Drell-Yan and deep inelastic scattering nea…
Region analysis of QED massive fermion form factor
Jaco ter Hoeve, Eric Laenen, Coenraad Marinissen +2
We perform an analysis of the one- and two-loop massive quark form factor in QED in a region expansion, up to next-to-leading power in the quark mass. This yields an extensive set…
Next-to-leading power resummed rapidity distributions near threshold for Drell-Yan and diphoton production
Robin van Bijleveld, Eric Laenen, Leonardo Vernazza +1
We consider Drell-Yan production and QCD-induced diphoton production and compute their rapidity distributions up to next-to-leading power (NLP) in the threshold variable. We give r…
Threshold factorization of the Drell-Yan quark-gluon channel and two-loop soft function at next-to-leading power
Alessandro Broggio, Sebastian Jaskiewicz, Leonardo Vernazza
We present a factorization theorem of the partonic Drell-Yan off-diagonal processes in the kinematic threshold regime at general…
Theory Techniques for Precision Physics -- Snowmass 2021 TF06 Topical Group Report
Radja Boughezal, Zoltan Ligeti, Wolfgang Altmannshofer +26
The wealth of experimental data collected at laboratory experiments suggests that there is some scale separation between the Standard Model (SM) and phenomena beyond the SM (BSM).…
Threshold resummation of quark-gluon partonic channels at next-to-leading power
Leonardo Vernazza
We discuss recent progress concerning the resummation of large logarithms at next-to-leading power (NLP) in scattering processes near threshold. We begin by briefly reviewing the d…
Endpoint factorization and next-to-leading power resummation of gluon thrust
Martin Beneke, Mathias Garny, Sebastian Jaskiewicz +4
Endpoint divergences in the convolution integrals appearing in next-to-leading-power factorization theorems prevent a straightforward application of standard methods to resum large…
High-energy limit of scattering amplitudes at NNLL
Calum Milloy, Giulio Falcioni, Einan Gardi +2
The high-energy limit of scattering amplitudes offers an excellent setting to explore the universal features of gauge theories. At Leading Logarithmic (LL) accuracy the pa…
Next-to-leading power endpoint factorization and resummation for off-diagonal "gluon" thrust
M. Beneke, M. Garny, S. Jaskiewicz +4
The lack of convergence of the convolution integrals appearing in next-to-leading-power (NLP) factorization theorems prevents the applications of existing methods to resum power-su…
Initial state QED radiation aspects for future colliders
S. Frixione, E. Laenen, C. M. Carloni Calame +25
This white paper concerns theoretical and phenomenological aspects relevant to the physics of future colliders, in particular regarding initial-state QED radiation. The co…
Snowmass 2021 White Paper: Resummation for future colliders
Melissa van Beekveld, Sebastian Jaskiewicz, Tao Liu +8
Resummation techniques are essential for high-precision phenomenology at current and future high-energy collider experiments. Perturbative computations of cross sections often suff…
Disentangling the Regge cut and Regge pole in perturbative QCD
Giulio Falcioni, Einan Gardi, Niamh Maher +2
The high-energy limit of gauge-theory amplitudes features both a Regge pole and Regge cuts. We show how to disentangle these, and hence how to determine the Regge trajectory beyond…
Two-parton scattering in the high-energy limit: climbing two- and three-Reggeon ladders
Leonardo Vernazza, Giulio Falcioni, Einan Gardi +2
We review recent progress on the calculation of scattering amplitudes in the high-energy limit. We start by illustrating the shockwave formalism, which allows one to calculate ampl…
Scattering amplitudes in the Regge limit and the soft anomalous dimension through four loops
Giulio Falcioni, Einan Gardi, Niamh Maher +2
Using rapidity evolution equations we study two-to-two gauge-theory scattering amplitudes in the Regge limit. We carry out explicit computations at next-to-next-to-leading logarith…
The Soft Anomalous Dimension at four loops in the Regge Limit
Niamh Maher, Giulio Falcioni, Einan Gardi +2
The soft anomalous dimension governs the infrared divergences of scattering amplitudes in general kinematics to all orders in perturbation theory. By comparing the recent Regge-lim…
Threshold resummation of new partonic channels at next-to-leading power
Melissa van Beekveld, Leonardo Vernazza, Chris D. White
Collider observables involving heavy particles are subject to large logarithmic terms near threshold, which must be summed to all orders in perturbation theory to obtain sensible r…
Next-to-leading power two-loop soft functions for the Drell-Yan process at threshold
Alessandro Broggio, Sebastian Jaskiewicz, Leonardo Vernazza
We calculate the generalized soft functions at at next-to-leading power accuracy for the Drell-Yan process at threshold. The operator definitions of these obje…