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Nuclear modification factor of isolated photons in PbPb collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 5.02~\mathrm{TeV}$
The transverse energy ($E^{\gamma}_\text{T}$) spectra and the nuclear modification factors ($R_{\mathrm{AA}}$) of isolated photons are analyzed using proton-proton (pp) and lead-lead (PbPb) collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 5.02~\mathrm{TeV}$. The data were collected using the CMS detector...
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2019
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Acceso en línea: | http://cds.cern.ch/record/2699607 |
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author | CMS Collaboration |
author_facet | CMS Collaboration |
author_sort | CMS Collaboration |
collection | CERN |
description | The transverse energy ($E^{\gamma}_\text{T}$) spectra and the nuclear modification factors ($R_{\mathrm{AA}}$) of isolated photons are analyzed using proton-proton (pp) and lead-lead (PbPb) collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 5.02~\mathrm{TeV}$. The data were collected using the CMS detector at the CERN LHC with corresponding integrated luminosities of $404~\mu\mathrm{b}^{-1}$ and $27.4~\mathrm{pb}^{-1}$ for PbPb and pp data, respectively. The results are shown as a function of photon $E^{\gamma}_\text{T}$ in the pseudorapidity range $\left\lvert{\eta}\right\rvert < 1.44$, for $E^{\gamma}_\text{T}$ between 25 and 200$~\mathrm{GeV}$ and for different centrality bins. The data are compared to JEPHOX next-to-leading-order calculations and found to be in good agreement. In addition, $R_{\mathrm{AA}}$ is consistent with unity for all centralities in PbPb. |
id | cern-2699607 |
institution | Organización Europea para la Investigación Nuclear |
publishDate | 2019 |
record_format | invenio |
spelling | cern-26996072020-03-29T15:42:29Zhttp://cds.cern.ch/record/2699607CMS CollaborationNuclear modification factor of isolated photons in PbPb collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 5.02~\mathrm{TeV}$Nuclear Physics - ExperimentThe transverse energy ($E^{\gamma}_\text{T}$) spectra and the nuclear modification factors ($R_{\mathrm{AA}}$) of isolated photons are analyzed using proton-proton (pp) and lead-lead (PbPb) collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 5.02~\mathrm{TeV}$. The data were collected using the CMS detector at the CERN LHC with corresponding integrated luminosities of $404~\mu\mathrm{b}^{-1}$ and $27.4~\mathrm{pb}^{-1}$ for PbPb and pp data, respectively. The results are shown as a function of photon $E^{\gamma}_\text{T}$ in the pseudorapidity range $\left\lvert{\eta}\right\rvert < 1.44$, for $E^{\gamma}_\text{T}$ between 25 and 200$~\mathrm{GeV}$ and for different centrality bins. The data are compared to JEPHOX next-to-leading-order calculations and found to be in good agreement. In addition, $R_{\mathrm{AA}}$ is consistent with unity for all centralities in PbPb.CMS-PAS-HIN-18-016oai:cds.cern.ch:26996072019 |
spellingShingle | Nuclear Physics - Experiment CMS Collaboration Nuclear modification factor of isolated photons in PbPb collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 5.02~\mathrm{TeV}$ |
title | Nuclear modification factor of isolated photons in PbPb collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 5.02~\mathrm{TeV}$ |
title_full | Nuclear modification factor of isolated photons in PbPb collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 5.02~\mathrm{TeV}$ |
title_fullStr | Nuclear modification factor of isolated photons in PbPb collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 5.02~\mathrm{TeV}$ |
title_full_unstemmed | Nuclear modification factor of isolated photons in PbPb collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 5.02~\mathrm{TeV}$ |
title_short | Nuclear modification factor of isolated photons in PbPb collisions at $\sqrt{s_{_{\mathrm{NN}}}} = 5.02~\mathrm{TeV}$ |
title_sort | nuclear modification factor of isolated photons in pbpb collisions at $\sqrt{s_{_{\mathrm{nn}}}} = 5.02~\mathrm{tev}$ |
topic | Nuclear Physics - Experiment |
url | http://cds.cern.ch/record/2699607 |
work_keys_str_mv | AT cmscollaboration nuclearmodificationfactorofisolatedphotonsinpbpbcollisionsatsqrtsmathrmnn502mathrmtev |