A subtraction scheme for processes involving fragmentation functions at NLO

Autor: M. S. Zidi, J. Ph. Guillet, I. Schienbein, H. Zaraket

Publikováno v: European Physical Journal C: Particles and Fields, Vol 84, Iss 6, Pp 1-37 (2024)

Abstract We present a novel subtraction method to remove the soft and collinear divergences at next-to-leading order for processes involving an arbitrary number of fragmentation functions, where this method acts directly in the hadronic centre-of-mas

Externí odkaz: https://doaj.org/article/45543122616346debb511b9bbe2fa705

Two-loop scalar functions with $I$ internal lines, $I \le 5$

Autor: E. Pilon, J. Ph. Guillet, Yoshimitsu Shimizu, M. S. Zidi

This article displays a proof of concept of the mixed analytical/numerical method, presented in previous publications, to compute two-loop functions with up to five massive propagators in a scalar theory having three- and four-leg vertices as the Hig

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb0bf867e1a62a366f195dd6f26e9318
https://hal.archives-ouvertes.fr/hal-03178519

Towards an efficient method to compute two-loop scalar amplitudes

Autor: Mohamed Sadek Zidi, Y. Shimizu, E. Pilon, J. Ph. Guillet

Publikováno v: J.Phys.Conf.Ser.
19th International Workshop on Advanced Computing and Analysis Techniques in Physics Research
19th International Workshop on Advanced Computing and Analysis Techniques in Physics Research, Mar 2019, Saas-Fee, Switzerland. pp.012016, ⟨10.1088/1742-6596/1525/1/012016⟩

We report on an ongoing work initiated by Prof. Shimizu, proposing a method to numerically compute two-loop scalar integrals as sums of two-dimensional integrals of generalised one-loop N-point functions analytically computed and integrated over some

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62541f0bbf816d569cdcd31e1c10a0e1
https://hal.archives-ouvertes.fr/hal-02905199

Tools for NLO automation: Extension of the golem95C integral library

Autor: J. Ph. Guillet, Gudrun Heinrich, J. F. von Soden-Fraunhofen

Publikováno v: Computer Physics Communications
Computer Physics Communications, Elsevier, 2014, 185, pp.1828-1834

We present an extension of the program golem95C for the numerical evaluation of scalar integrals and tensor form factors entering the calculation of one-loop amplitudes, which supports tensor ranks exceeding the number of propagators. This extension

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::307da953f02eb6ffd93e734f1b5da9d2
https://doi.org/10.1016/j.cpc.2014.03.009

A novel method to compute one loop 4 point functions

Autor: J. Ph. Guillet, E. Pilon, S. Zidi

Publikováno v: J.Phys.Conf.Ser.
4th Computational Particle Physics Workshop
4th Computational Particle Physics Workshop, Oct 2016, Tsukuba, Japan. pp.012001, ⟨10.1088/1742-6596/920/1/012001⟩

International audience; We present a part of an ongoing work initiated by Prof. Shimizu on a method to compute numerically two loop scalar integrals as a sum of two dimensional integrals of generalized scalar one loop four point functions. This impli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a82b9cde6a0b5f6475d44cf2e8166ab
https://hal.archives-ouvertes.fr/hal-01645824