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dc.contributor.author
Catani, Stefano
dc.contributor.author
Cieri, Leandro Javier
dc.contributor.author
de Florian, Daniel Enrique
dc.contributor.author
Ferrera, Giancarlo
dc.contributor.author
Grazzini, Massimiliano
dc.date.available
2017-06-09T19:20:03Z
dc.date.issued
2014-04
dc.identifier.citation
Catani, Stefano; Cieri, Leandro Javier; de Florian, Daniel Enrique; Ferrera, Giancarlo; Grazzini, Massimiliano; Universality of transverse-momentum resummation and hard factors at the NNLO; Elsevier Science; Nuclear Physics B; 881; 4-2014; 414-443
dc.identifier.issn
0550-3213
dc.identifier.uri
http://hdl.handle.net/11336/17904
dc.description.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 qT subtraction formalism to perform fullyexclusive 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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Qcd
dc.subject
Nnlo
dc.subject.classification
Física de Partículas y Campos
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Universality of transverse-momentum resummation and hard factors at the NNLO
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-06-09T14:15:30Z
dc.journal.volume
881
dc.journal.pagination
414-443
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Catani, Stefano. Universita Degli Studi Di Firenze; Italia
dc.description.fil
Fil: Cieri, Leandro Javier. Instituto de Investigaciones Universitarias Roma la Sapienza; Italia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: de Florian, Daniel Enrique. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Ferrera, Giancarlo. Universita Degli Studi Di Milano; Italia
dc.description.fil
Fil: Grazzini, Massimiliano. Universitat Zurich; Suiza
dc.journal.title
Nuclear Physics B
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.nuclphysb.2014.02.011
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0550321314000479?via%3Dihub
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