Two-loop helicity amplitudes for diphoton production with massive quark loop

Abstract We compute two-loop helicity amplitudes in QCD for diphoton production through quark- and gluon-initiated channels, accounting for a massive internal quark loop by keeping its full mass dependence. Using physical projectors, we directly decompose the amplitude into its helicity components....

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Главные авторы:	Taushif Ahmed, Amlan Chakraborty, Ekta Chaubey, Mandeep Kaur
Формат:	Artigo
Язык:	Inglês
Опубликовано:	SpringerOpen 2025-12-01
Серии:	Journal of High Energy Physics
Предметы:	Factorization Renormalization Group Higher-Order Perturbative Calculations Top Quark
Online-ссылка:	https://doi.org/10.1007/JHEP12(2025)106
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