Contribution to a conference proceedings/Internal Report

PUBDB-2015-05551

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png On a four dimensional formulation for dimensionally regulated amplitudes

Fazio, A. R. (Corresponding author)

2014
Deutsches Elektronen-Synchrotron, DESY Hamburg

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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2014-04/149

Report No.: DESY-PROC-2014-04

Abstract: We propose a pure four-dimensional formulation (FDF) of the $d$-dimensionalregularization of one-loop scattering amplitudes.In our formulation particles propagating inside the loop are represented by massive internal states regulating the divergences.We present explicit representations of the polarizationand helicity states of the four-dimensional particlespropagating in the loop. They allow for a complete,four-dimensional, unitarity-based constructionof $d$-dimensional amplitudes. Finally we show how the FDF allows for the recursive constructionof d dimensional one-loop integrands, generalizing the four-dimensionalopen-loop approach.

Keyword(s): scattering amplitude ; regularization ; polarization ; helicity ; higher-order: 1 ; dimension: 4

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)
2. LHC/CMS Experiment (CMS)
3. Uni Hamburg / Experimentalphysik (UNI/EXP)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. No specific instrument

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Database coverage:

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Book/Proceedings/Internal Report Schmidt, A. (Editor)>Extern* ; Sander, C. (Editor)DESY*
Proceedings, 20th International Conference on Particles and Nuclei (PANIC 14)
2014Panic2014, Panic2014, HamburgHamburg, Germany, 25 Aug 2014 - 29 Aug 20142014-08-252014-08-29 Hamburg : Deutsches Elektronen-Synchrotron, DESY 1-754 (2014) [10.3204/DESY-PROC-2014-04]2014     Files  Fulltext BibTeX | EndNote: XML, Text | RIS

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