Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Tiziano Peraro"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 8, Pp 1-38 (2024)
Abstract We compute three families of two-loop six-point massless Feynman integrals in dimensional regularization, namely the double-box, the pentagon-triangle, and the hegaxon-bubble family. This constitutes the first analytic computation of two-loo
Externí odkaz:
https://doaj.org/article/1c851327a74c476c846a3483dd14a5a8
Autor:
Simon Badger, Michał Czakon, Heribertus Bayu Hartanto, Ryan Moodie, Tiziano Peraro, Rene Poncelet, Simone Zoia
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-39 (2023)
Abstract In this work, we provide a comprehensive set of differential cross-section distributions for photon + di-jet production in proton-proton collisions with next-to-next-to-leading order precision in massless QCD. The event selection corresponds
Externí odkaz:
https://doaj.org/article/2e72a69629c94c61b4976fb9c403a3e5
Autor:
Gaia Fontana, Tiziano Peraro
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 8, Pp 1-36 (2023)
Abstract Intersection numbers are rational scalar products among functions that admit suitable integral representations, such as Feynman integrals. Using these scalar products, the decomposition of Feynman integrals into a basis of linearly independe
Externí odkaz:
https://doaj.org/article/a0f2ed2216d247b98acb70c410b097b5
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 2, Pp 1-30 (2023)
Abstract We compute the two-loop corrections to the helicity amplitudes for the coupling of a massive vector boson to a massless quark-antiquark pair and a gluon, accounting for vector and axial-vector couplings of the vector boson and distinguishing
Externí odkaz:
https://doaj.org/article/61d8b74ba8ba4c969d2daff87b5fcfde
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 3, Pp 1-35 (2022)
Abstract Two-loop corrections to scattering amplitudes are crucial theoretical input for collider physics. Recent years have seen tremendous advances in computing Feynman integrals, scattering amplitudes, and cross sections for five-particle processe
Externí odkaz:
https://doaj.org/article/ba50075ae44540949d2ee21d63280779
Autor:
Simon Badger, Christian Brønnum-Hansen, Dmitry Chicherin, Thomas Gehrmann, Heribertus Bayu Hartanto, Johannes Henn, Matteo Marcoli, Ryan Moodie, Tiziano Peraro, Simone Zoia
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 11, Pp 1-29 (2021)
Abstract We present an analytic computation of the gluon-initiated contribution to diphoton plus jet production at hadron colliders up to two loops in QCD. We reconstruct the analytic form of the finite remainders from numerical evaluations over fini
Externí odkaz:
https://doaj.org/article/5338b26fd5ca45729e4a51bc136463f3
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 9, Pp 1-24 (2019)
Abstract We present the first numerical results for the two-loop helicity amplitudes for the scattering of four partons and a W-boson in QCD. We use a finite field sampling method to reduce directly from Feynman diagrams to the coefficients of a set
Externí odkaz:
https://doaj.org/article/c3f01fd859834fc79f7aeb060ed25545
Autor:
Tiziano Peraro
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 7, Pp 1-58 (2019)
Abstract Complex algebraic calculations can be performed by reconstructing analytic results from numerical evaluations over finite fields. We describe FiniteFlow, a framework for defining and executing numerical algorithms over finite fields and reco
Externí odkaz:
https://doaj.org/article/ba64218951164bd69eb1fd6b6cfb1d7a
Autor:
Tiziano Peraro, Lorenzo Tancredi
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 7, Pp 1-22 (2019)
Abstract We present a method for building physical projector operators for multi-leg helicity amplitudes. For any helicity configuration of the external particles, we define a physical projector which singles out the corresponding helicity amplitude.
Externí odkaz:
https://doaj.org/article/8159f456f20a485b9156f5d5756d768f
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 1, Pp 1-18 (2019)
Abstract We present a compact analytic expression for the leading colour two-loop five-gluon amplitude in Yang-Mills theory with a single negative helicity and four positive helicities. The analytic result is reconstructed from numerical evaluations
Externí odkaz:
https://doaj.org/article/4a55d079e22c4ed0a9a0c181aa8a6f8d