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Abstract:

In this article, we study the triple-collinear limit of scattering amplitudes, focusing the discussion in processes which include at least one photon. To deal with infrared divergences we applied dimensional regularization (DREG) and we worked in the time-like (TL) kinematical region in order to ensure the validity of strict-collinear factorization. Both polarized and unpolarized splitting functions were obtained using independent codes, which allowed to implement a first cross-check among them. The divergent structure of all the triple-collinear splittings was compared with the Catani's formula, and we found a complete agreement. Moreover, in the polarized case, this comparison imposed additional constraints in the finite part of some master integrals (MI). The analysis of photon-started splittings led to very compact expressions, because of gauge invariance. These contributions were identified with the Abelian terms of the remaining splitting functions, which constitutes another cross-check of the results. © 2015 Elsevier B.V.

Registro:

Documento: Artículo
Título:NLO QCD corrections to triple collinear splitting functions
Autor:Sborlini, G.F.R.
Filiación:Departamento de Física and IFIBA, FCEyN, Universidad de Buenos Aires, (1428) Pabellón 1 Ciudad Universitaria, Capital Federal, Argentina
Instituto de Física Corpuscular, Universitat de València - Consejo Superior de Investigaciones Científicas, Parc Científic, Paterna, Valencia, E-46980, Spain
Palabras clave:Hadronic collisions; NLO computations
Año:2016
Volumen:273-275
Página de inicio:2003
Página de fin:2008
DOI: http://dx.doi.org/10.1016/j.nuclphysbps.2015.09.324
Título revista:Nuclear and Particle Physics Proceedings
Título revista abreviado:Nucl. Part. Phys. Proc.
ISSN:24056014
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24056014_v273-275_n_p2003_Sborlini

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Citas:

---------- APA ----------
(2016) . NLO QCD corrections to triple collinear splitting functions. Nuclear and Particle Physics Proceedings, 273-275, 2003-2008.
http://dx.doi.org/10.1016/j.nuclphysbps.2015.09.324
---------- CHICAGO ----------
Sborlini, G.F.R. "NLO QCD corrections to triple collinear splitting functions" . Nuclear and Particle Physics Proceedings 273-275 (2016) : 2003-2008.
http://dx.doi.org/10.1016/j.nuclphysbps.2015.09.324
---------- MLA ----------
Sborlini, G.F.R. "NLO QCD corrections to triple collinear splitting functions" . Nuclear and Particle Physics Proceedings, vol. 273-275, 2016, pp. 2003-2008.
http://dx.doi.org/10.1016/j.nuclphysbps.2015.09.324
---------- VANCOUVER ----------
Sborlini, G.F.R. NLO QCD corrections to triple collinear splitting functions. Nucl. Part. Phys. Proc. 2016;273-275:2003-2008.
http://dx.doi.org/10.1016/j.nuclphysbps.2015.09.324