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Catani, S.; De Florian, D.; Rodrigo, G. "The triple collinear limit of one-loop QCD amplitudes" (2004) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 586(3-4):323-331
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Abstract:

We consider the singular behaviour of one-loop QCD matrix elements when several external partons become simultaneously parallel. We present a new factorization formula that describes the singular collinear behaviour directly in colour space. The collinear singularities are embodied in process-independent splitting matrices that depend on the momenta, flavours, spins and colours of the collinear partons. We give the general structure of the infrared and ultraviolet divergences of the one-loop splitting matrices. We also present explicit one-loop results for the triple collinear splitting, q→qQ̄Q, of a quark and a quark-antiquark pair of different flavours. The one-loop triple collinear splitting is one of the ingredients that can be used to compute the evolution of parton distributions at the next-to-next-to-leading order in QCD perturbation theory. © 2004 Published by Elsevier B.V.

Registro:

Documento: Artículo
Título:The triple collinear limit of one-loop QCD amplitudes
Autor:Catani, S.; De Florian, D.; Rodrigo, G.
Filiación:INFN, Sezione di Firenze, Università di Firenze, I-50019 Sesto Fiorentino, Florence, Italy
Departamento de Física, FCEYN, Pabellón 1 Cd. Universitaria, Capital Federal, Argentina
Theory Division, CERN, CH-1211 Geneva 23, Switzerland
Inst. de Física Corpuscular, E-46071 Valencia, Spain
Palabras clave:amplitude modulation; article; color; infrared radiation; mathematical analysis; quark; theoretical model; ultraviolet radiation
Año:2004
Volumen:586
Número:3-4
Página de inicio:323
Página de fin:331
DOI: http://dx.doi.org/10.1016/j.physletb.2004.02.039
Título revista:Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Título revista abreviado:Phys Lett Sect B Nucl Elem Part High-Energy Phys
ISSN:03702693
CODEN:PYLBA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v586_n3-4_p323_Catani

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Citas:

---------- APA ----------
Catani, S., De Florian, D. & Rodrigo, G. (2004) . The triple collinear limit of one-loop QCD amplitudes. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 586(3-4), 323-331.
http://dx.doi.org/10.1016/j.physletb.2004.02.039
---------- CHICAGO ----------
Catani, S., De Florian, D., Rodrigo, G. "The triple collinear limit of one-loop QCD amplitudes" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 586, no. 3-4 (2004) : 323-331.
http://dx.doi.org/10.1016/j.physletb.2004.02.039
---------- MLA ----------
Catani, S., De Florian, D., Rodrigo, G. "The triple collinear limit of one-loop QCD amplitudes" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 586, no. 3-4, 2004, pp. 323-331.
http://dx.doi.org/10.1016/j.physletb.2004.02.039
---------- VANCOUVER ----------
Catani, S., De Florian, D., Rodrigo, G. The triple collinear limit of one-loop QCD amplitudes. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2004;586(3-4):323-331.
http://dx.doi.org/10.1016/j.physletb.2004.02.039