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Photon-tagged measurements of jet quenching with ATLAS
Events containing a high transverse momentum ($p_\mathrm{T}$) prompt photon offer a useful tool to study the dynamics of the hot, dense medium produced in heavy ion collisions. Because photons do not carry color charge, they are unaffected by the medium, and thus provide information about the moment...
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Lenguaje: | eng |
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2018
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Acceso en línea: | https://dx.doi.org/10.1016/j.nuclphysa.2018.09.056 http://cds.cern.ch/record/2634090 |
_version_ | 1780959677540990976 |
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author | Perepelitsa, Dennis |
author_facet | Perepelitsa, Dennis |
author_sort | Perepelitsa, Dennis |
collection | CERN |
description | Events containing a high transverse momentum ($p_\mathrm{T}$) prompt photon offer a useful tool to study the dynamics of the hot, dense medium produced in heavy ion collisions. Because photons do not carry color charge, they are unaffected by the medium, and thus provide information about the momentum, direction, and flavor (quark or gluon) of the associated hard-scattered parton before it begins to shower and become quenched. In particular, the presence of a high-$p_\mathrm{T}$ photon can be used to select $pp$ and Pb+Pb events with the same configuration before quenching, limiting the effects of selection biases present in other jet measurements. The large statistics $pp$ and Pb+Pb data delivered by the LHC in 2015 thus allow for a detailed study of photon-tagged jet quenching effects, such as the overall parton energy loss and modified structure of the component of the shower which remains correlated with the initial parton direction (e.g. in cone). In this proceedings, photon-tagged measurements of jet quenching by ATLAS are reported. |
id | cern-2634090 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2018 |
record_format | invenio |
spelling | cern-26340902022-02-02T19:29:27Zdoi:10.1016/j.nuclphysa.2018.09.056http://cds.cern.ch/record/2634090engPerepelitsa, DennisPhoton-tagged measurements of jet quenching with ATLASParticle Physics - ExperimentEvents containing a high transverse momentum ($p_\mathrm{T}$) prompt photon offer a useful tool to study the dynamics of the hot, dense medium produced in heavy ion collisions. Because photons do not carry color charge, they are unaffected by the medium, and thus provide information about the momentum, direction, and flavor (quark or gluon) of the associated hard-scattered parton before it begins to shower and become quenched. In particular, the presence of a high-$p_\mathrm{T}$ photon can be used to select $pp$ and Pb+Pb events with the same configuration before quenching, limiting the effects of selection biases present in other jet measurements. The large statistics $pp$ and Pb+Pb data delivered by the LHC in 2015 thus allow for a detailed study of photon-tagged jet quenching effects, such as the overall parton energy loss and modified structure of the component of the shower which remains correlated with the initial parton direction (e.g. in cone). In this proceedings, photon-tagged measurements of jet quenching by ATLAS are reported.ATL-PHYS-PROC-2018-085oai:cds.cern.ch:26340902018-08-14 |
spellingShingle | Particle Physics - Experiment Perepelitsa, Dennis Photon-tagged measurements of jet quenching with ATLAS |
title | Photon-tagged measurements of jet quenching with ATLAS |
title_full | Photon-tagged measurements of jet quenching with ATLAS |
title_fullStr | Photon-tagged measurements of jet quenching with ATLAS |
title_full_unstemmed | Photon-tagged measurements of jet quenching with ATLAS |
title_short | Photon-tagged measurements of jet quenching with ATLAS |
title_sort | photon-tagged measurements of jet quenching with atlas |
topic | Particle Physics - Experiment |
url | https://dx.doi.org/10.1016/j.nuclphysa.2018.09.056 http://cds.cern.ch/record/2634090 |
work_keys_str_mv | AT perepelitsadennis photontaggedmeasurementsofjetquenchingwithatlas |