%0 Conference Paper
%A Fazio, A. R.
%T On a four dimensional formulation for dimensionally regulated amplitudes
%N DESY-PROC-2014-04
%C Hamburg
%I Deutsches Elektronen-Synchrotron, DESY
%M PUBDB-2015-05551
%M DESY-PROC-2014-04
%P 544-547
%D 2014
%X 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.
%B Panic2014
%C 25 Aug 2014 - 29 Aug 2014, Hamburg (Germany)
Y2 25 Aug 2014 - 29 Aug 2014
M2 Hamburg, Germany
%K scattering amplitude (INSPIRE)
%K regularization (INSPIRE)
%K polarization (INSPIRE)
%K helicity (INSPIRE)
%K higher-order: 1 (INSPIRE)
%K dimension: 4 (INSPIRE)
%F PUB:(DE-HGF)8 ; PUB:(DE-HGF)15
%9 Contribution to a conference proceedingsInternal Report
%R 10.3204/DESY-PROC-2014-04/149
%U https://bib-pubdb1.desy.de/record/291735