Zobrazeno 1 - 10
of 180
pro vyhledávání: '"Magnea, Lorenzo"'
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
Autor:
Artico, Daniele, Magnea, Lorenzo
We present a projective framework for the construction of Integration by Parts (IBP) identities and differential equations for Feynman integrals, working in Feynman-parameter space. This framework originates with very early results which emerged long
Externí odkaz:
http://arxiv.org/abs/2311.02457
Autor:
Artico, Daniele, Magnea, Lorenzo
Integration-by-parts (IBP) identities and differential equations are the primary modern tools for the evaluation of high-order Feynman integrals. They are commonly derived and implemented in the momentum-space representation. We provide a different v
Externí odkaz:
http://arxiv.org/abs/2310.03939
Autor:
Bertolotti, Gloria, Magnea, Lorenzo, Pelliccioli, Giovanni, Ratti, Alessandro, Signorile-Signorile, Chiara, Torrielli, Paolo, Uccirati, Sandro
We use the Local Analytic Sector Subtraction scheme to construct a completely analytic set of expressions implementing a fully local infrared subtraction at NNLO for generic coloured massless final states. The cancellation of all explicit infrared po
Externí odkaz:
http://arxiv.org/abs/2212.11190
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
Infrared divergences in the perturbative expansion of gauge theory amplitudes and cross sections have been a focus of theoretical investigations for almost a century. New insights still continue to emerge, as higher perturbative orders are explored,
Externí odkaz:
http://arxiv.org/abs/2112.07099
Autor:
Magnea, Lorenzo
We consider the infrared factorisation of non-abelian multi-particle scattering amplitudes, and we study the form of the universal colour operator responsible for infrared divergences, when expressed in terms of coordinates on the `celestial sphere'
Externí odkaz:
http://arxiv.org/abs/2104.10254
Correlators of Wilson-line operators in non-abelian gauge theories are known to exponentiate, and their logarithms can be organised in terms of collections of Feynman diagrams called webs. In [1] we introduced the concept of Cweb, or correlator web,
Externí odkaz:
http://arxiv.org/abs/2102.03598
Autor:
Magnea, Lorenzo, Pelliccioli, Giovanni, Signorile-Signorile, Chiara, Torrielli, Paolo, Uccirati, Sandro
Within the framework of local analytic sector subtraction, we present the full analytic integration of double-real and real-virtual local infrared counterterms that enter NNLO QCD computations with any number of massless final-state partons. We show
Externí odkaz:
http://arxiv.org/abs/2010.14493