Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Milloy, Calum"'
Infrared subtraction algorithms beyond next-to-leading order necessitate the analysis of multiple infrared limits of scattering amplitudes, where several particles sequentially become soft or collinear. In this contribution, we report on the study pe
Externí odkaz:
http://arxiv.org/abs/2407.07512
In the context of infrared subtraction algorithms beyond next-to-leading order, it becomes necessary to consider multiple infrared limits of scattering amplitudes, in which several particles become soft or collinear in a strongly-ordered sequence. We
Externí odkaz:
http://arxiv.org/abs/2403.11975
The general structure of infrared divergences in the scattering of massive particles is captured by the soft anomalous dimension matrix. The latter can be computed from a correlation function of multiple Wilson lines. The state-of-the-art two-loop re
Externí odkaz:
http://arxiv.org/abs/2310.10145
Autor:
Magnea, Lorenzo, Milloy, Calum, Signorile-Signorile, Chiara, Torrielli, Paolo, Uccirati, Sandro
After a brief introduction to the problem of subtraction of infrared divergences for high-order collider observables, we present a preliminary study of strongly-ordered soft and collinear multiple radiation from the point of view of factorisation. We
Externí odkaz:
http://arxiv.org/abs/2209.06102
The high-energy limit of $2\to 2$ scattering amplitudes offers an excellent setting to explore the universal features of gauge theories. At Leading Logarithmic (LL) accuracy the partonic amplitude is governed by Regge poles in the complex angular mom
Externí odkaz:
http://arxiv.org/abs/2207.07441
Publikováno v:
Phys.Rev.Lett. 128 (2022) 13, 132001
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 loops. While the nonplanar part of multiple Reggeon $t$-channel e
Externí odkaz:
http://arxiv.org/abs/2112.11098
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 logarithmic accuracy through four loops and present new results for both infra
Externí odkaz:
http://arxiv.org/abs/2111.10664
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 amplitudes as iterated solutions of rapidity evolution equations. We then
Externí odkaz:
http://arxiv.org/abs/2111.05166
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-limit results for $2\to2$ scattering (through Next-to-Next-to-Leading Log
Externí odkaz:
http://arxiv.org/abs/2111.01517
Publikováno v:
Phys. Rev. D 103, 111501 (2021)
Using an iterative solution of rapidity evolution equations, we compute partonic $2\to 2$ gauge theory amplitudes at four loops in full colour up to the Next-to-Next-to-Leading Logarithms (NNLL) in the Regge limit. By contrasting the resulting amplit
Externí odkaz:
http://arxiv.org/abs/2012.00613