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Collider Implications of Multiple Non-Universal Extra Dimensions

We consider multiple TeV scale extra compact dimensions in an asymmetric string compactification scenario in which the SM gauge bosons can propagate into the TeV scale extra dimensions while the SM fermions are confined to the usual SM D3 brane. We calculate the contributions that the KK excitations...

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Detalles Bibliográficos
Autores principales: Ghavri, R, McMullen, C D, Nandi, S
Lenguaje:eng
Publicado: 2006
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.74.015012
http://cds.cern.ch/record/926409
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author Ghavri, R
McMullen, C D
Nandi, S
author_facet Ghavri, R
McMullen, C D
Nandi, S
author_sort Ghavri, R
collection CERN
description We consider multiple TeV scale extra compact dimensions in an asymmetric string compactification scenario in which the SM gauge bosons can propagate into the TeV scale extra dimensions while the SM fermions are confined to the usual SM D3 brane. We calculate the contributions that the KK excitations of the gluons make to the multijet cross sections in proton proton collisions at the LHC energy. At very high pT, the dijet signal will either be enhanced significantly due to virtual g star exchanges or place a lower bound on the compactification scale of about 8 TeV. We find that the dijet signal is very sensitive to three parameters: the compactification scale, the string scale, and the number of extra dimensions. Thus, although the dijet signal is much more sensitive to KK effects, the dijet signal alone does not provide sufficient information to deduce the number of extra dimensions nor the compactification scale. However, the three jet signal, which is not sensitive to the string scale, can be analyzed in conjunction with the dijet signal to extract all three parameters. For proton proton collisions at the LHC energy, the three jet signal can be significantly enhanced by KK contributions for a compactification scale of about 4 to 5 TeV.
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institution Organización Europea para la Investigación Nuclear
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spelling cern-9264092019-09-30T06:29:59Zdoi:10.1103/PhysRevD.74.015012http://cds.cern.ch/record/926409engGhavri, RMcMullen, C DNandi, SCollider Implications of Multiple Non-Universal Extra DimensionsParticle Physics - PhenomenologyWe consider multiple TeV scale extra compact dimensions in an asymmetric string compactification scenario in which the SM gauge bosons can propagate into the TeV scale extra dimensions while the SM fermions are confined to the usual SM D3 brane. We calculate the contributions that the KK excitations of the gluons make to the multijet cross sections in proton proton collisions at the LHC energy. At very high pT, the dijet signal will either be enhanced significantly due to virtual g star exchanges or place a lower bound on the compactification scale of about 8 TeV. We find that the dijet signal is very sensitive to three parameters: the compactification scale, the string scale, and the number of extra dimensions. Thus, although the dijet signal is much more sensitive to KK effects, the dijet signal alone does not provide sufficient information to deduce the number of extra dimensions nor the compactification scale. However, the three jet signal, which is not sensitive to the string scale, can be analyzed in conjunction with the dijet signal to extract all three parameters. For proton proton collisions at the LHC energy, the three jet signal can be significantly enhanced by KK contributions for a compactification scale of about 4 to 5 TeV.hep-ph/0602014OSU-HEP-2006-01oai:cds.cern.ch:9264092006-02-02
spellingShingle Particle Physics - Phenomenology
Ghavri, R
McMullen, C D
Nandi, S
Collider Implications of Multiple Non-Universal Extra Dimensions
title Collider Implications of Multiple Non-Universal Extra Dimensions
title_full Collider Implications of Multiple Non-Universal Extra Dimensions
title_fullStr Collider Implications of Multiple Non-Universal Extra Dimensions
title_full_unstemmed Collider Implications of Multiple Non-Universal Extra Dimensions
title_short Collider Implications of Multiple Non-Universal Extra Dimensions
title_sort collider implications of multiple non-universal extra dimensions
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.74.015012
http://cds.cern.ch/record/926409
work_keys_str_mv AT ghavrir colliderimplicationsofmultiplenonuniversalextradimensions
AT mcmullencd colliderimplicationsofmultiplenonuniversalextradimensions
AT nandis colliderimplicationsofmultiplenonuniversalextradimensions