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Low-$x$ QCD studies with jets in the Hadron Forward calorimeter in p-p collisions at $\sqrts$ = 14 TeV

%Forward (di)jet measurements can be used to constrain the Parton Distribution Functions (PDFs) %and to study the possible onset of BFKL and/or gluon saturation QCD evolutions at low values of %parton momentum fraction (small Bjorken-$x$) in the proton. We present detailed studies of fully simulated...

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Autor principal: CMS Collaboration
Publicado: 2008
Materias:
Acceso en línea:http://cds.cern.ch/record/1194469
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author CMS Collaboration
author_facet CMS Collaboration
author_sort CMS Collaboration
collection CERN
description %Forward (di)jet measurements can be used to constrain the Parton Distribution Functions (PDFs) %and to study the possible onset of BFKL and/or gluon saturation QCD evolutions at low values of %parton momentum fraction (small Bjorken-$x$) in the proton. We present detailed studies of fully simulated and reconstructed jets in the CMS Hadron Forward (HF) calorimeter (3$<|\eta|<$5). We compare the performances (response, energy and position resolutions) of various reconstruction algorithms: SISCone ($R =$~0.5), Iterative Cone ($R =$~0.5) and $k_T$ ($D =$~0.4), for jets of moderate transverse momenta $p_T\approx$~20~--~200~GeV/c. The expected single inclusive forward jet $p_T$ spectrum %, as well as the azimuthal decorrelation of jets with a large rapidity separation (Mueller-Navelet dijets) are is presented for p-p collisions at $\sqrts$~=~14~TeV assuming an integrated luminosity of $\int\mathcal{L}\;\mbox{dt}$~=~1~pb$^{-1}$ for this analysis. We compare the results to Next-to-Leading-Order (NLO) perturbative QCD calculations and discuss the sensitivity of the measurement to the underlying Parton Distribution Functions (PDFs) at low values of parton fractional momentum $x$ in the proton.\\\\
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institution Organización Europea para la Investigación Nuclear
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spelling cern-11944692019-09-30T06:29:59Zhttp://cds.cern.ch/record/1194469CMS CollaborationLow-$x$ QCD studies with jets in the Hadron Forward calorimeter in p-p collisions at $\sqrts$ = 14 TeVParticle Physics - Experiment%Forward (di)jet measurements can be used to constrain the Parton Distribution Functions (PDFs) %and to study the possible onset of BFKL and/or gluon saturation QCD evolutions at low values of %parton momentum fraction (small Bjorken-$x$) in the proton. We present detailed studies of fully simulated and reconstructed jets in the CMS Hadron Forward (HF) calorimeter (3$<|\eta|<$5). We compare the performances (response, energy and position resolutions) of various reconstruction algorithms: SISCone ($R =$~0.5), Iterative Cone ($R =$~0.5) and $k_T$ ($D =$~0.4), for jets of moderate transverse momenta $p_T\approx$~20~--~200~GeV/c. The expected single inclusive forward jet $p_T$ spectrum %, as well as the azimuthal decorrelation of jets with a large rapidity separation (Mueller-Navelet dijets) are is presented for p-p collisions at $\sqrts$~=~14~TeV assuming an integrated luminosity of $\int\mathcal{L}\;\mbox{dt}$~=~1~pb$^{-1}$ for this analysis. We compare the results to Next-to-Leading-Order (NLO) perturbative QCD calculations and discuss the sensitivity of the measurement to the underlying Parton Distribution Functions (PDFs) at low values of parton fractional momentum $x$ in the proton.\\\\CMS-PAS-FWD-08-001oai:cds.cern.ch:11944692008
spellingShingle Particle Physics - Experiment
CMS Collaboration
Low-$x$ QCD studies with jets in the Hadron Forward calorimeter in p-p collisions at $\sqrts$ = 14 TeV
title Low-$x$ QCD studies with jets in the Hadron Forward calorimeter in p-p collisions at $\sqrts$ = 14 TeV
title_full Low-$x$ QCD studies with jets in the Hadron Forward calorimeter in p-p collisions at $\sqrts$ = 14 TeV
title_fullStr Low-$x$ QCD studies with jets in the Hadron Forward calorimeter in p-p collisions at $\sqrts$ = 14 TeV
title_full_unstemmed Low-$x$ QCD studies with jets in the Hadron Forward calorimeter in p-p collisions at $\sqrts$ = 14 TeV
title_short Low-$x$ QCD studies with jets in the Hadron Forward calorimeter in p-p collisions at $\sqrts$ = 14 TeV
title_sort low-$x$ qcd studies with jets in the hadron forward calorimeter in p-p collisions at $\sqrts$ = 14 tev
topic Particle Physics - Experiment
url http://cds.cern.ch/record/1194469
work_keys_str_mv AT cmscollaboration lowxqcdstudieswithjetsinthehadronforwardcalorimeterinppcollisionsatsqrts14tev