Artículo

Sborlini, G.F.R.; Driencourt-Mangin, F.; Hernández-Pinto, R.J.; Rodrigo, G. "Four-dimensional unsubtraction from the loop-tree duality" (2016) Journal of High Energy Physics. 2016(8)
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Abstract:

We present a new algorithm to construct a purely four dimensional representation of higher-order perturbative corrections to physical cross-sections at next-to-leading order (NLO). The algorithm is based on the loop-tree duality (LTD), and it is implemented by introducing a suitable mapping between the external and loop momenta of the virtual scattering amplitudes, and the external momenta of the real emission corrections. In this way, the sum over degenerate infrared states is performed at integrand level and the cancellation of infrared divergences occurs locally without introducing subtraction counter-terms to deal with soft and final-state collinear singularities. The dual representation of ultraviolet counter-terms is also discussed in detail, in particular for self-energy contributions. The method is first illustrated with the scalar three-point function, before proceeding with the calculation of the physical cross-section for γ∗→ qq¯ (g) , and its generalisation to multi-leg processes. The extension to next-to-next-to-leading order (NNLO) is briefly commented. © 2016, The Author(s).

Registro:

Documento: Artículo
Título:Four-dimensional unsubtraction from the loop-tree duality
Autor:Sborlini, G.F.R.; Driencourt-Mangin, F.; Hernández-Pinto, R.J.; Rodrigo, G.
Filiación:Instituto de Física Corpuscular, Universitat de València - Consejo Superior de Investigaciones Científicas, Parc Científic, Paterna, Valencia E-46980, Spain
Departamento de Física and IFIBA, FCEyN, Universidad de Buenos Aires, (1428) Pabellón 1, Ciudad Universitaria, Capital Federal, Argentina
Facultad de Ciencias Físico-Matemáticas, Universidad Autónoma de Sinaloa, Ciudad Universitaria, Culiacán, Sinaloa CP 80000, Mexico
Palabras clave:NLO Computations
Año:2016
Volumen:2016
Número:8
DOI: http://dx.doi.org/10.1007/JHEP08(2016)160
Título revista:Journal of High Energy Physics
Título revista abreviado:J. High Energy Phys.
ISSN:11266708
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2016_n8_p_Sborlini

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Citas:

---------- APA ----------
Sborlini, G.F.R., Driencourt-Mangin, F., Hernández-Pinto, R.J. & Rodrigo, G. (2016) . Four-dimensional unsubtraction from the loop-tree duality. Journal of High Energy Physics, 2016(8).
http://dx.doi.org/10.1007/JHEP08(2016)160
---------- CHICAGO ----------
Sborlini, G.F.R., Driencourt-Mangin, F., Hernández-Pinto, R.J., Rodrigo, G. "Four-dimensional unsubtraction from the loop-tree duality" . Journal of High Energy Physics 2016, no. 8 (2016).
http://dx.doi.org/10.1007/JHEP08(2016)160
---------- MLA ----------
Sborlini, G.F.R., Driencourt-Mangin, F., Hernández-Pinto, R.J., Rodrigo, G. "Four-dimensional unsubtraction from the loop-tree duality" . Journal of High Energy Physics, vol. 2016, no. 8, 2016.
http://dx.doi.org/10.1007/JHEP08(2016)160
---------- VANCOUVER ----------
Sborlini, G.F.R., Driencourt-Mangin, F., Hernández-Pinto, R.J., Rodrigo, G. Four-dimensional unsubtraction from the loop-tree duality. J. High Energy Phys. 2016;2016(8).
http://dx.doi.org/10.1007/JHEP08(2016)160