Measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead–lead collisions at √s NN =2.76 TeV with the ATLAS detector

Measurements of inclusive jet suppression in heavy ion collisions at the LHC provide direct sensitivity to the physics of jet quenching. In a sample of lead–lead collisions at s NN =2.76 TeV corresponding to an integrated luminosity of approximately 7 μb −1 , ATLAS has measured jets with a calorimet...

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Autor principal: Aad, G.
Formato: JOUR
Materias:
ATLAS
Heavy ion
Jets
LHC
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03702693_v719_n4-5_p220_Aad
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_03702693_v719_n4-5_p220_Aad
record_format dspace
spelling todo:paper_03702693_v719_n4-5_p220_Aad2023-10-03T15:29:26Z Measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead–lead collisions at √s NN =2.76 TeV with the ATLAS detector Aad, G. ATLAS Heavy ion Jets LHC Measurements of inclusive jet suppression in heavy ion collisions at the LHC provide direct sensitivity to the physics of jet quenching. In a sample of lead–lead collisions at s NN =2.76 TeV corresponding to an integrated luminosity of approximately 7 μb −1 , ATLAS has measured jets with a calorimeter system over the pseudorapidity interval |η|<2.1 and over the transverse momentum range 38<p T <210 GeV. Jets were reconstructed using the anti-k t algorithm with values for the distance parameter that determines the nominal jet radius of R=0.2, 0.3, 0.4 and 0.5. The centrality dependence of the jet yield is characterized by the jet “central-to-peripheral ratio,” R CP . Jet production is found to be suppressed by approximately a factor of two in the 10% most central collisions relative to peripheral collisions. R CP varies smoothly with centrality as characterized by the number of participating nucleons. The observed suppression is only weakly dependent on jet radius and transverse momentum. These results provide the first direct measurement of inclusive jet suppression in heavy ion collisions and complement previous measurements of dijet transverse energy imbalance at the LHC. © 2013 CERN JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03702693_v719_n4-5_p220_Aad
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic ATLAS
Heavy ion
Jets
LHC
spellingShingle ATLAS
Heavy ion
Jets
LHC
Aad, G.
Measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead–lead collisions at √s NN =2.76 TeV with the ATLAS detector
topic_facet ATLAS
Heavy ion
Jets
LHC
description Measurements of inclusive jet suppression in heavy ion collisions at the LHC provide direct sensitivity to the physics of jet quenching. In a sample of lead–lead collisions at s NN =2.76 TeV corresponding to an integrated luminosity of approximately 7 μb −1 , ATLAS has measured jets with a calorimeter system over the pseudorapidity interval |η|<2.1 and over the transverse momentum range 38<p T <210 GeV. Jets were reconstructed using the anti-k t algorithm with values for the distance parameter that determines the nominal jet radius of R=0.2, 0.3, 0.4 and 0.5. The centrality dependence of the jet yield is characterized by the jet “central-to-peripheral ratio,” R CP . Jet production is found to be suppressed by approximately a factor of two in the 10% most central collisions relative to peripheral collisions. R CP varies smoothly with centrality as characterized by the number of participating nucleons. The observed suppression is only weakly dependent on jet radius and transverse momentum. These results provide the first direct measurement of inclusive jet suppression in heavy ion collisions and complement previous measurements of dijet transverse energy imbalance at the LHC. © 2013 CERN
format JOUR
author Aad, G.
author_facet Aad, G.
author_sort Aad, G.
title Measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead–lead collisions at √s NN =2.76 TeV with the ATLAS detector
title_short Measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead–lead collisions at √s NN =2.76 TeV with the ATLAS detector
title_full Measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead–lead collisions at √s NN =2.76 TeV with the ATLAS detector
title_fullStr Measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead–lead collisions at √s NN =2.76 TeV with the ATLAS detector
title_full_unstemmed Measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead–lead collisions at √s NN =2.76 TeV with the ATLAS detector
title_sort measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead–lead collisions at √s nn =2.76 tev with the atlas detector
url http://hdl.handle.net/20.500.12110/paper_03702693_v719_n4-5_p220_Aad
work_keys_str_mv AT aadg measurementofthejetradiusandtransversemomentumdependenceofinclusivejetsuppressioninleadleadcollisionsatsnn276tevwiththeatlasdetector
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