Next-to-next-to-leading order QCD corrections in models of TeV-scale gravity

We compute the next-to-next-to-leading order QCD corrections to the graviton production in models of TeV-scale gravity, within the soft-virtual approximation. For the Arkani-Hamed, Dimopoulos and Dvali (ADD) model we evaluate the contribu-tion to the Drell-Yan cross section, and we present distribut...

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Autor principal: de Florian, Daniel Enrique
Publicado: 2014
Materias:
Phenomenology of Large extra dimensions
QCD Phenomenology
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2014_n4_p_DeFlorian
http://hdl.handle.net/20.500.12110/paper_11266708_v2014_n4_p_DeFlorian
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_11266708_v2014_n4_p_DeFlorian
record_format dspace
spelling paper:paper_11266708_v2014_n4_p_DeFlorian2023-06-08T16:08:31Z Next-to-next-to-leading order QCD corrections in models of TeV-scale gravity de Florian, Daniel Enrique Phenomenology of Large extra dimensions QCD Phenomenology We compute the next-to-next-to-leading order QCD corrections to the graviton production in models of TeV-scale gravity, within the soft-virtual approximation. For the Arkani-Hamed, Dimopoulos and Dvali (ADD) model we evaluate the contribu-tion to the Drell-Yan cross section, and we present distributions for the di-lepton invariant mass at the LHC with a center-of-mass energy √SH = 14 TeV. We find a large K factor (K ∼1.8) for large values of invariant mass, which is the region where the ADD graviton contribution dominates the cross section. The increase in the cross section with respect to the previous order result is larger than 10% in the same invariant mass region. We also observe a substantial reduction in the scale uncertainty. For the Randall-Sundrum (RS) model we computed the total single graviton production cross section at the LHC. We find an increase between 10% and 13% with respect to the next-to-leading order prediction, depending on the model parameters. We provide an analytic expression for the NNLO K factor as a function of the lightest RS graviton mass. © 2014 The Author(s). Fil:De Florian, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2014_n4_p_DeFlorian http://hdl.handle.net/20.500.12110/paper_11266708_v2014_n4_p_DeFlorian
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Phenomenology of Large extra dimensions
QCD Phenomenology
spellingShingle Phenomenology of Large extra dimensions
QCD Phenomenology
de Florian, Daniel Enrique
Next-to-next-to-leading order QCD corrections in models of TeV-scale gravity
topic_facet Phenomenology of Large extra dimensions
QCD Phenomenology
description We compute the next-to-next-to-leading order QCD corrections to the graviton production in models of TeV-scale gravity, within the soft-virtual approximation. For the Arkani-Hamed, Dimopoulos and Dvali (ADD) model we evaluate the contribu-tion to the Drell-Yan cross section, and we present distributions for the di-lepton invariant mass at the LHC with a center-of-mass energy √SH = 14 TeV. We find a large K factor (K ∼1.8) for large values of invariant mass, which is the region where the ADD graviton contribution dominates the cross section. The increase in the cross section with respect to the previous order result is larger than 10% in the same invariant mass region. We also observe a substantial reduction in the scale uncertainty. For the Randall-Sundrum (RS) model we computed the total single graviton production cross section at the LHC. We find an increase between 10% and 13% with respect to the next-to-leading order prediction, depending on the model parameters. We provide an analytic expression for the NNLO K factor as a function of the lightest RS graviton mass. © 2014 The Author(s).
author de Florian, Daniel Enrique
author_facet de Florian, Daniel Enrique
author_sort de Florian, Daniel Enrique
title Next-to-next-to-leading order QCD corrections in models of TeV-scale gravity
title_short Next-to-next-to-leading order QCD corrections in models of TeV-scale gravity
title_full Next-to-next-to-leading order QCD corrections in models of TeV-scale gravity
title_fullStr Next-to-next-to-leading order QCD corrections in models of TeV-scale gravity
title_full_unstemmed Next-to-next-to-leading order QCD corrections in models of TeV-scale gravity
title_sort next-to-next-to-leading order qcd corrections in models of tev-scale gravity
publishDate 2014
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2014_n4_p_DeFlorian
http://hdl.handle.net/20.500.12110/paper_11266708_v2014_n4_p_DeFlorian
work_keys_str_mv AT defloriandanielenrique nexttonexttoleadingorderqcdcorrectionsinmodelsoftevscalegravity
_version_ 1768544877830733824

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