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High Energy Physics - Phenomenology

arXiv:1503.01469 (hep-ph)
[Submitted on 4 Mar 2015 (v1), last revised 4 Sep 2015 (this version, v2)]

Title:Package-X: A Mathematica package for the analytic calculation of one-loop integrals

Authors:Hiren H. Patel
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Abstract:Package-X, a Mathematica package for the analytic computation of one-loop integrals dimensionally regulated near 4 spacetime dimensions is described. Package-X computes arbitrarily high rank tensor integrals with up to three propagators, and gives compact expressions of UV divergent, IR divergent, and finite parts for any kinematic configuration involving real-valued external invariants and internal masses. Output expressions can be readily evaluated numerically and manipulated symbolically with built-in Mathematica functions. Emphasis is on evaluation speed, on readability of results, and especially on user-friendliness. Also included is a routine to compute traces of products of Dirac matrices, and a collection of projectors to facilitate the computation of fermion form factors at one-loop. The package is intended to be used both as a research tool and as an educational tool.
Comments: Package files are available at this http URL
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:1503.01469 [hep-ph]
  (or arXiv:1503.01469v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1503.01469
Journal reference: Comput.Phys.Commun. 197 (2015) 276-290
Related DOI: https://doi.org/10.1016/j.cpc.2015.08.017

Submission history

From: Hiren Patel [view email]
[v1] Wed, 4 Mar 2015 21:00:34 UTC (118 KB)
[v2] Fri, 4 Sep 2015 09:46:18 UTC (120 KB)
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