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Reduction of one-massless-loop with scalar boxes in n+2 dimensions

2009/03/10 by C. Bernicot, Bernicot, C
Medicine · Physics and Astronomy · #Biofield Effects and Biophysics #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.0903.1719

openalex publication_date 2009/03/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

All one-massless-loop Feynman diagrams could be written like a linear combination of scalar boxes, triangles an bubbles in n dimensions plus rational terms. However, the four-point scalar integrals in n+2 dimensions are free of infrared divergences. We are going to change the dimensions of the scalar boxes n → n+2 and the using of this degree of freedom to simplify the computation of coefficients of the decomposition.

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