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Abstract:

Abstract: We consider the transverse-momentum (qT) distribution of a diphoton pair produced in hadron collisions. At small values of qT, we resum the logarithmically-enhanced perturbative QCD contributions up to next-to-next-to-leading logarithmic accuracy. At intermediate and large values of qT, we consistently combine resummation with the known next-to-leading order perturbative result. All perturbative terms up to order αS 2 are included in our computation which, after integration over qT, reproduces the known next- to-next-to-leading order result for the diphoton pair production total cross section. We present a comparison with LHC data and an estimate of the perturbative accuracy of the theoretical calculation by performing the corresponding variation of scales. In general we observe that the effect of the resummation is not only to recover the predictivity of the calculation at small transverse momentum, but also to improve substantially the agreement with the experimental data. © 2015, The Author(s).

Registro:

Documento: Artículo
Título:Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy
Autor:Cieri, L.; Coradeschi, F.; de Florian, D.
Filiación:Dipartimento di Fisica, Università di Roma “La Sapienza” and INFN — Sezione di Roma, Rome, I-00185, Italy
INFN — Sezione di Firenze and Dipartimento di Fisica, Università di Firenze, Sesto Fiorentino, Florence I-50019, Italy
Departamento de Física, FCEYN, Universidad de Buenos Aires, (1428) Pabellón 1 Ciudad Universitaria, Capital Federal, Argentina
Palabras clave:Hadronic Colliders; QCD Phenomenology
Año:2015
Volumen:2015
Número:6
DOI: http://dx.doi.org/10.1007/JHEP06(2015)185
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_v2015_n6_p_Cieri

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Citas:

---------- APA ----------
Cieri, L., Coradeschi, F. & de Florian, D. (2015) . Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy. Journal of High Energy Physics, 2015(6).
http://dx.doi.org/10.1007/JHEP06(2015)185
---------- CHICAGO ----------
Cieri, L., Coradeschi, F., de Florian, D. "Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy" . Journal of High Energy Physics 2015, no. 6 (2015).
http://dx.doi.org/10.1007/JHEP06(2015)185
---------- MLA ----------
Cieri, L., Coradeschi, F., de Florian, D. "Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy" . Journal of High Energy Physics, vol. 2015, no. 6, 2015.
http://dx.doi.org/10.1007/JHEP06(2015)185
---------- VANCOUVER ----------
Cieri, L., Coradeschi, F., de Florian, D. Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy. J. High Energy Phys. 2015;2015(6).
http://dx.doi.org/10.1007/JHEP06(2015)185