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Abstract:

We consider QCD radiative corrections to the production of colorless high-mass systems in hadron collisions. The logarithmically-enhanced contributions at small transverse momentum are treated to all perturbative orders by a universal resummation formula that depends on a single process-dependent hard factor. We show that the hard factor is directly related to the all-order virtual amplitude of the corresponding partonic process. The direct relation is universal (process-independent), and it is expressed by an all-order factorization formula that we explicitly evaluate up to the next-to-next-to-leading order (NNLO) in QCD perturbation theory. Once the NNLO scattering amplitude is available, the corresponding hard factor is directly determined: it controls NNLO contributions in resummed calculations at full next-to-next-to-leading logarithmic accuracy, and it can be used in applications of the q T subtraction formalism to perform fully-exclusive perturbative calculations up to NNLO. The universality structure of the hard factor and its explicit NNLO form are also extended to the related formalism of threshold resummation. © 2014 The Authors.

Registro:

Documento: Artículo
Título:Universality of transverse-momentum resummation and hard factors at the NNLO
Autor:Catani, S.; Cieri, L.; de Florian, D.; Ferrera, G.; Grazzini, M.
Filiación:INFN, Sezione di Firenze and Dipartimento di Fisica e Astronomia, Università di Firenze, I-50019 Sesto Fiorentino, Florence, Italy
Dipartimento di Fisica, Università di Roma La Sapienza and INFN, Sezione di Roma, I-00185 Rome, Italy
Departamento de Física, FCEYN, Universidad de Buenos Aires, Capital Federal, (1428) Pabellón 1 Ciudad Universitaria, Argentina
Dipartimento di Fisica, Università di Milano and INFN, Sezione di Milano, I-20133 Milan, Italy
Institut für Theoretische Physik, Universität Zürich, CH-8057 Zürich, Switzerland
INFN, Sezione di Firenze, Sesto Fiorentino, Florence, Italy
Año:2014
Volumen:881
Número:1
Página de inicio:414
Página de fin:443
DOI: http://dx.doi.org/10.1016/j.nuclphysb.2014.02.011
Título revista:Nuclear Physics B
Título revista abreviado:Nucl. Phys. B
ISSN:05503213
CODEN:NUPBB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05503213_v881_n1_p414_Catani

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Citas:

---------- APA ----------
Catani, S., Cieri, L., de Florian, D., Ferrera, G. & Grazzini, M. (2014) . Universality of transverse-momentum resummation and hard factors at the NNLO. Nuclear Physics B, 881(1), 414-443.
http://dx.doi.org/10.1016/j.nuclphysb.2014.02.011
---------- CHICAGO ----------
Catani, S., Cieri, L., de Florian, D., Ferrera, G., Grazzini, M. "Universality of transverse-momentum resummation and hard factors at the NNLO" . Nuclear Physics B 881, no. 1 (2014) : 414-443.
http://dx.doi.org/10.1016/j.nuclphysb.2014.02.011
---------- MLA ----------
Catani, S., Cieri, L., de Florian, D., Ferrera, G., Grazzini, M. "Universality of transverse-momentum resummation and hard factors at the NNLO" . Nuclear Physics B, vol. 881, no. 1, 2014, pp. 414-443.
http://dx.doi.org/10.1016/j.nuclphysb.2014.02.011
---------- VANCOUVER ----------
Catani, S., Cieri, L., de Florian, D., Ferrera, G., Grazzini, M. Universality of transverse-momentum resummation and hard factors at the NNLO. Nucl. Phys. B. 2014;881(1):414-443.
http://dx.doi.org/10.1016/j.nuclphysb.2014.02.011