The Two Loop Crossed Ladder Vertex Diagram with Two Massive Exchanges

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dc.creatorAglietti, U.
dc.creatorBonciani, R.
dc.creatorGrassi, L.
dc.creatorRemiddi, E.
dc.date2007-05-17
dc.date.accessioned2026-07-07T10:55:40Z
dc.date.available2026-07-07T10:55:40Z
dc.descriptionWe compute the (three) master integrals for the crossed ladder diagram with two exchanged quanta of equal mass. The differential equations obeyed by the master integrals are used to generate power series expansions centered around all the singular (plus some regular) points, which are then matched numerically with high accuracy. The expansions allow a fast and precise numerical calculation of the three master integrals (better than 15 digits with less than 30 terms in the whole real axis). A conspicuous relation with the equal-mass sunrise in two dimensions is found. Comparison with a previous large momentum expansion is made finding complete agreement.
dc.description42 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/0705.2616
dc.identifierhttp://arxiv.org/abs/0705.2616
dc.identifierNucl.Phys.B789:45-83,2008
dc.identifierdoi:10.1016/j.nuclphysb.2007.07.019
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186151
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe Two Loop Crossed Ladder Vertex Diagram with Two Massive Exchanges
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