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Precision Probes of QCD at High Energies

New physics, that is too heavy to be produced directly, can leave measurable imprints on the tails of kinematic distributions at the LHC. We use energetic QCD processes to perform novel measurements of the Standard Model (SM) Effective Field Theory. We show that the dijet invariant mass spectrum, an...

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Detalles Bibliográficos
Autores principales: Alioli, Simone, Farina, Marco, Pappadopulo, Duccio, Ruderman, Joshua T.
Lenguaje:eng
Publicado: 2017
Materias:
Acceso en línea:https://dx.doi.org/10.1007/JHEP07(2017)097
http://cds.cern.ch/record/2274055
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author Alioli, Simone
Farina, Marco
Pappadopulo, Duccio
Ruderman, Joshua T.
author_facet Alioli, Simone
Farina, Marco
Pappadopulo, Duccio
Ruderman, Joshua T.
author_sort Alioli, Simone
collection CERN
description New physics, that is too heavy to be produced directly, can leave measurable imprints on the tails of kinematic distributions at the LHC. We use energetic QCD processes to perform novel measurements of the Standard Model (SM) Effective Field Theory. We show that the dijet invariant mass spectrum, and the inclusive jet transverse momentum spectrum, are sensitive to a dimension 6 operator that modifies the gluon propagator at high energies. The dominant effect is constructive or destructive interference with SM jet production. We compare differential next-to-leading order predictions from POWHEG to public 7 TeV jet data, including scale, PDF, and experimental uncertainties and their respective correlations. We constrain a New Physics (NP) scale of 3.5 TeV with current data. We project the reach of future 13 and 100 TeV measurements, which we estimate to be sensitive to NP scales of 8 and 60 TeV, respectively. As an application, we apply our bounds to constrain heavy vector octet colorons that couple to the QCD current. We project that effective operators will surpass bump hunts, in terms of coloron mass reach, even for sequential couplings.
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institution Organización Europea para la Investigación Nuclear
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publishDate 2017
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spelling cern-22740552021-11-12T20:33:00Zdoi:10.1007/JHEP07(2017)097doi:10.1007/JHEP07(2017)097http://cds.cern.ch/record/2274055engAlioli, SimoneFarina, MarcoPappadopulo, DuccioRuderman, Joshua T.Precision Probes of QCD at High Energieshep-exParticle Physics - Experimenthep-phParticle Physics - PhenomenologyNew physics, that is too heavy to be produced directly, can leave measurable imprints on the tails of kinematic distributions at the LHC. We use energetic QCD processes to perform novel measurements of the Standard Model (SM) Effective Field Theory. We show that the dijet invariant mass spectrum, and the inclusive jet transverse momentum spectrum, are sensitive to a dimension 6 operator that modifies the gluon propagator at high energies. The dominant effect is constructive or destructive interference with SM jet production. We compare differential next-to-leading order predictions from POWHEG to public 7 TeV jet data, including scale, PDF, and experimental uncertainties and their respective correlations. We constrain a New Physics (NP) scale of 3.5 TeV with current data. We project the reach of future 13 and 100 TeV measurements, which we estimate to be sensitive to NP scales of 8 and 60 TeV, respectively. As an application, we apply our bounds to constrain heavy vector octet colorons that couple to the QCD current. We project that effective operators will surpass bump hunts, in terms of coloron mass reach, even for sequential couplings.arXiv:1706.03068CERN-TH-2017-125oai:cds.cern.ch:22740552017-06-09
spellingShingle hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
Alioli, Simone
Farina, Marco
Pappadopulo, Duccio
Ruderman, Joshua T.
Precision Probes of QCD at High Energies
title Precision Probes of QCD at High Energies
title_full Precision Probes of QCD at High Energies
title_fullStr Precision Probes of QCD at High Energies
title_full_unstemmed Precision Probes of QCD at High Energies
title_short Precision Probes of QCD at High Energies
title_sort precision probes of qcd at high energies
topic hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1007/JHEP07(2017)097
https://dx.doi.org/10.1007/JHEP07(2017)097
http://cds.cern.ch/record/2274055
work_keys_str_mv AT aliolisimone precisionprobesofqcdathighenergies
AT farinamarco precisionprobesofqcdathighenergies
AT pappadopuloduccio precisionprobesofqcdathighenergies
AT rudermanjoshuat precisionprobesofqcdathighenergies