Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy

Abstract: We consider the transverse-momentum (q<inf>T</inf>) distribution of a diphoton pair produced in hadron collisions. At small values of q<inf>T</inf>, we resum the logarithmically-enhanced perturbative QCD contributions up to next-to-next-to-leading logarithmic accura...

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Detalles Bibliográficos
Autores principales:	Cieri, Leandro Javier, de Florian, Daniel Enrique
Publicado:	2015
Materias:	Hadronic Colliders QCD Phenomenology
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2015_n6_p_Cieri http://hdl.handle.net/20.500.12110/paper_11266708_v2015_n6_p_Cieri
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_11266708_v2015_n6_p_Cieri
record_format	dspace
spelling	paper:paper_11266708_v2015_n6_p_Cieri2023-06-08T16:08:40Z Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy Cieri, Leandro Javier de Florian, Daniel Enrique Hadronic Colliders QCD Phenomenology Abstract: We consider the transverse-momentum (q<inf>T</inf>) distribution of a diphoton pair produced in hadron collisions. At small values of q<inf>T</inf>, we resum the logarithmically-enhanced perturbative QCD contributions up to next-to-next-to-leading logarithmic accuracy. At intermediate and large values of q<inf>T</inf>, we consistently combine resummation with the known next-to-leading order perturbative result. All perturbative terms up to order α<inf>S</inf> 2 are included in our computation which, after integration over q<inf>T</inf>, 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). Fil:Cieri, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:de Florian, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2015_n6_p_Cieri http://hdl.handle.net/20.500.12110/paper_11266708_v2015_n6_p_Cieri
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Hadronic Colliders QCD Phenomenology
spellingShingle	Hadronic Colliders QCD Phenomenology Cieri, Leandro Javier de Florian, Daniel Enrique Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy
topic_facet	Hadronic Colliders QCD Phenomenology
description	Abstract: We consider the transverse-momentum (q<inf>T</inf>) distribution of a diphoton pair produced in hadron collisions. At small values of q<inf>T</inf>, we resum the logarithmically-enhanced perturbative QCD contributions up to next-to-next-to-leading logarithmic accuracy. At intermediate and large values of q<inf>T</inf>, we consistently combine resummation with the known next-to-leading order perturbative result. All perturbative terms up to order α<inf>S</inf> 2 are included in our computation which, after integration over q<inf>T</inf>, 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).
author	Cieri, Leandro Javier de Florian, Daniel Enrique
author_facet	Cieri, Leandro Javier de Florian, Daniel Enrique
author_sort	Cieri, Leandro Javier
title	Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy
title_short	Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy
title_full	Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy
title_fullStr	Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy
title_full_unstemmed	Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy
title_sort	diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2015_n6_p_Cieri http://hdl.handle.net/20.500.12110/paper_11266708_v2015_n6_p_Cieri
work_keys_str_mv	AT cierileandrojavier diphotonproductionathadroncolliderstransversemomentumresummationatnexttonexttoleadinglogarithmicaccuracy AT defloriandanielenrique diphotonproductionathadroncolliderstransversemomentumresummationatnexttonexttoleadinglogarithmicaccuracy
_version_	1768542853075566592

Diphoton production at hadron colliders: transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy

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