Observation of a centrality-dependent dijet asymmetry in lead-lead collisions at √s NN =2.76 Tev with the ATLAS detector at the LHC

By using the ATLAS detector, observations have been made of a centrality-dependent dijet asymmetry in the collisions of lead ions at the Large Hadron Collider. In a sample of lead-lead events with a per-nucleon center of mass energy of 2.76 TeV, selected with a minimum bias trigger, jets are reconst...

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Publicado:	2010
Materias:	Atomic physics Physics ATLAS detectors Center-of-mass energies Electromagnetic and hadronic calorimeters Fine grained Large Hadron Collider Lead collisions Proton proton collisions Transverse energy Energy dissipation
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v105_n25_p_Multitudinario http://hdl.handle.net/20.500.12110/paper_00319007_v105_n25_p_Multitudinario
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00319007_v105_n25_p_Multitudinario
record_format	dspace
spelling	paper:paper_00319007_v105_n25_p_Multitudinario2025-07-30T17:38:54Z Observation of a centrality-dependent dijet asymmetry in lead-lead collisions at √s NN =2.76 Tev with the ATLAS detector at the LHC Atomic physics Physics ATLAS detectors Center-of-mass energies Electromagnetic and hadronic calorimeters Fine grained Large Hadron Collider Lead collisions Proton proton collisions Transverse energy Energy dissipation By using the ATLAS detector, observations have been made of a centrality-dependent dijet asymmetry in the collisions of lead ions at the Large Hadron Collider. In a sample of lead-lead events with a per-nucleon center of mass energy of 2.76 TeV, selected with a minimum bias trigger, jets are reconstructed in fine-grained, longitudinally segmented electromagnetic and hadronic calorimeters. The transverse energies of dijets in opposite hemispheres are observed to become systematically more unbalanced with increasing event centrality leading to a large number of events which contain highly asymmetric dijets. This is the first observation of an enhancement of events with such large dijet asymmetries, not observed in proton-proton collisions, which may point to an interpretation in terms of strong jet energy loss in a hot, dense medium.© 2010 CERN, for the ATLAS Collaboration. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v105_n25_p_Multitudinario http://hdl.handle.net/20.500.12110/paper_00319007_v105_n25_p_Multitudinario
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Atomic physics Physics ATLAS detectors Center-of-mass energies Electromagnetic and hadronic calorimeters Fine grained Large Hadron Collider Lead collisions Proton proton collisions Transverse energy Energy dissipation
spellingShingle	Atomic physics Physics ATLAS detectors Center-of-mass energies Electromagnetic and hadronic calorimeters Fine grained Large Hadron Collider Lead collisions Proton proton collisions Transverse energy Energy dissipation Observation of a centrality-dependent dijet asymmetry in lead-lead collisions at √s NN =2.76 Tev with the ATLAS detector at the LHC
topic_facet	Atomic physics Physics ATLAS detectors Center-of-mass energies Electromagnetic and hadronic calorimeters Fine grained Large Hadron Collider Lead collisions Proton proton collisions Transverse energy Energy dissipation
description	By using the ATLAS detector, observations have been made of a centrality-dependent dijet asymmetry in the collisions of lead ions at the Large Hadron Collider. In a sample of lead-lead events with a per-nucleon center of mass energy of 2.76 TeV, selected with a minimum bias trigger, jets are reconstructed in fine-grained, longitudinally segmented electromagnetic and hadronic calorimeters. The transverse energies of dijets in opposite hemispheres are observed to become systematically more unbalanced with increasing event centrality leading to a large number of events which contain highly asymmetric dijets. This is the first observation of an enhancement of events with such large dijet asymmetries, not observed in proton-proton collisions, which may point to an interpretation in terms of strong jet energy loss in a hot, dense medium.© 2010 CERN, for the ATLAS Collaboration.
title	Observation of a centrality-dependent dijet asymmetry in lead-lead collisions at √s NN =2.76 Tev with the ATLAS detector at the LHC
title_short	Observation of a centrality-dependent dijet asymmetry in lead-lead collisions at √s NN =2.76 Tev with the ATLAS detector at the LHC
title_full	Observation of a centrality-dependent dijet asymmetry in lead-lead collisions at √s NN =2.76 Tev with the ATLAS detector at the LHC
title_fullStr	Observation of a centrality-dependent dijet asymmetry in lead-lead collisions at √s NN =2.76 Tev with the ATLAS detector at the LHC
title_full_unstemmed	Observation of a centrality-dependent dijet asymmetry in lead-lead collisions at √s NN =2.76 Tev with the ATLAS detector at the LHC
title_sort	observation of a centrality-dependent dijet asymmetry in lead-lead collisions at √s nn =2.76 tev with the atlas detector at the lhc
publishDate	2010
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v105_n25_p_Multitudinario http://hdl.handle.net/20.500.12110/paper_00319007_v105_n25_p_Multitudinario
_version_	1840325409316536320

Observation of a centrality-dependent dijet asymmetry in lead-lead collisions at √s NN =2.76 Tev with the ATLAS detector at the LHC

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