Zobrazeno 1 - 10 of 59 pro vyhledávání: '"master integral"'
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Akademický článek
High-precision calculation of the 4-loop contribution to the electron g-2 in QED
Autor: Stefano Laporta
Publikováno v: Physics Letters B, Vol 772, Iss C, Pp 232-238 (2017)
I have evaluated up to 1100 digits of precision the contribution of the 891 4-loop Feynman diagrams contributing to the electron g-2 in QED. The total mass-independent 4-loop contribution is ae=−1.912245764926445574152647167439830054060873390658725
Externí odkaz: https://doaj.org/article/17e55d8c5f5745e0b37fe7ef9f9db253
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2
Two-loop master integrals for a planar topology contributing to $pp \rightarrow t\bar{t}j$
Autor: Badger, Simon, Becchetti, Matteo, Chaubey, Ekta, Marzucca, Robin
We consider the case of a two-loop five-point pentagon-box integral configuration with one internal massive propagator that contributes to top-quark pair production in association with a jet at hadron colliders. We construct the system of differentia
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49c7f758e29ae622b1967d2f5bc613b1
https://hal.science/hal-03850953
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3
One-loop Gravitational Bremsstrahlung and Waveforms from a Heavy-Mass Effective Field Theory
Autor: Brandhuber, Andreas, Brown, Graham R., Chen, Gang, De Angelis, Stefano, Gowdy, Joshua, Travaglini, Gabriele
Publikováno v: JHEP
JHEP, 2023, 06, pp.048. ⟨10.1007/JHEP06(2023)048⟩
Journal of High Energy Physics
Using a heavy-mass effective field theory (HEFT), we study gravitational-wave emission in the scattering of two spinless black holes or neutron stars of arbitrary masses at next-to-leading order in the Post-Minkowskian expansion. We compute the contr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e094943b30b5937fe69740f84fc125d
https://hal.science/hal-04047646
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4
Universal Decomposition of Phase-Space Integrands
Autor: Kosower, David A., Page, Ben
Publikováno v: Phys.Rev.D
Phys.Rev.D, 2023, 107 (9), pp.096006. ⟨10.1103/PhysRevD.107.096006⟩
Physical Review
One-loop integrands can be written in terms of a simple, process-independent basis. We show that a similar basis exists for integrands of phase-space integrals for the real-emission contribution at next-to-leading order. Our demonstration deploys tec
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4de97f1d46ed7e632eecb5fc3763af0
http://cds.cern.ch/record/2853383
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5
Renormalization of three-quark operators at two loops in the RI${}'$/SMOM scheme
Autor: Kniehl, Bernd, Veretin, Oleg L.
Publikováno v: Nuclear physics / B 992, 116210 (2023). doi:10.1016/j.nuclphysb.2023.116210
Nuclear Physics
Nuclear physics / B 992, 116210 (2023). doi:10.1016/j.nuclphysb.2023.116210
We consider the renormalization of the three-quark operators withoutderivatives at next-to-next-to-leading order in QCD perturbation theory at thesymmetric subtraction p
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e7411cb469d0199d817b27532fc2d49
http://arxiv.org/abs/2207.08553
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6
Radiated momentum in the post-Minkowskian worldline approach via reverse unitarity
Autor: Massimiliano Maria Riva, Filippo Vernizzi
Publikováno v: Journal of High Energy Physics
Journal of High Energy Physics, Vol 2021, Iss 11, Pp 1-41 (2021)
JHEP
JHEP, 2021, 11, pp.228. ⟨10.1007/JHEP11(2021)228⟩
Journal of High Energy Physics, 2021, 11, pp.228. ⟨10.1007/JHEP11(2021)228⟩
We compute the four-momentum radiated during the scattering of two spinless bodies, at leading order in the Newton's contant $G$ and at all orders in the velocities, using the Effective Field Theory worldline approach. Following \cite{Mougiakakos:202
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23a09c3a52bd05d9b501f08343b9ea45
http://repo.scoap3.org/api
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7
Specializations of partial differential equations for Feynman integrals
Autor: Bytev, Vladimir V., Kniehl, Bernd A., Veretin, Oleg
Publikováno v: Nuclear Physics
Nuclear physics / B 984, 115972 (2022). doi:10.1016/j.nuclphysb.2022.115972
Nuclear physics / B 984, 115972 (2022). doi:10.1016/j.nuclphysb.2022.115972
Starting from the Mellin-Barnes integral representation of a Feynman integraldepending on set of kinematic variables $z_i$, we derive a system of partialdifferential equ
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c41ca8f314f1953c831c0b3ac3e69ef6
https://doi.org/10.1016/j.nuclphysb.2022.115972
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8
The diagrammatic coaction beyond one loop
Autor: Claude Duhr, Einan Gardi, James Matthew, Samuel Abreu, Ruth Britto
Publikováno v: Journal of High Energy Physics
JHEP
JHEP, 2021, 10, pp.131. ⟨10.1007/JHEP10(2021)131⟩
Abreu, S, Britto, R, Duhr, C, Gardi, E & Matthew, J 2021, ' The diagrammatic coaction beyond one loop ', Journal of High Energy Physics, no. 10, 131, pp. 1-64 . https://doi.org/10.1007/JHEP10(2021)131
Journal of High Energy Physics, 2021, 10, pp.131. ⟨10.1007/JHEP10(2021)131⟩
Journal of High Energy Physics, Vol 2021, Iss 10, Pp 1-66 (2021)
The diagrammatic coaction maps any given Feynman graph into pairs of graphs and cut graphs such that, conjecturally, when these graphs are replaced by the corresponding Feynman integrals one obtains a coaction on the respective functions. The coactio
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5fd98374c641c0ac627a7dfa1dab34f4
http://repo.scoap3.org/api
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9
Glue-and-cut at five loops
Autor: Vladimir A. Smirnov, Raul Pereira, Erik Panzer, Vasco Goncalves, Alexander V. Smirnov, Alessandro Georgoudis
Publikováno v: JHEP
JHEP, 2021, 09, pp.098. ⟨10.1007/JHEP09(2021)098⟩
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2021, Iss 9, Pp 1-20 (2021)
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
We compute epsilon-expansions around 4 dimensions of a complete set of master integrals for momentum space five-loop massless propagator integrals in dimensional regularization, up to and including the first order with contributions of transcendental
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e36e0a563838a596a0680eb17905754f
https://doi.org/10.1007/jhep09(2021)098
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10
Cutting massless four-loop propagators
Autor: Andrey Pikelner, Vitaly Magerya
Publikováno v: Journal of High Energy Physics, Vol 2019, Iss 12, Pp 1-58 (2019)
Journal of high energy physics 2019(12), 26 (1-57) (2019). doi:10.1007/JHEP12(2019)026
Journal of high energy physics 026, 1-55 (2019). doi:10.3204/PUBDB-2020-00188
Journal of high energy physics 2019(12), 26 (1-57) (2019). doi:10.1007/JHEP12(2019)026
Among the unitarity cuts of 4-loop massless propagators two kinds are currently fully known: the 2-particle cuts with 3 loops corresponding to form-factors, a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afeba270364cc6760122ce9994420c88
https://doaj.org/article/260d716824cb426badb950a31ab5ca10
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