Measurement of angular and momentum distributions of charged particles within and around jets in Pb+Pb and pp collisions at sNN=5.02TeV with ATLAS at the LHC

Puri, Akshat

doi:10.1016/j.nuclphysa.2018.09.021

Title: Measurement of angular and momentum distributions of charged particles within and around jets in Pb+Pb and pp collisions at $\sqrt{s_{NN}} = 5.02 TeV$ with ATLAS at the LHC

Abstract

Studies of the fragmentation of jets into charged particles in heavy-ion collisions can help in understanding the mechanism of jet quenching by the hot and dense QCD matter created in such collisions, the quark-gluon plasma. These proceedings present a measurement of the angular distribution of charged particles around the jet axis in √^sNN = 5.02 TeV Pb+Pb and pp collisions, done using the ATLAS detector at the LHC. The measurement is performed inside jets reconstructed with the anti-kt algorithm with radius parameter R = 0.4, and is extended to regions outside the jet cone. Here the results are presented as a function of Pb+Pb collision centrality, and both jet and charged-particle transverse momenta.

Authors:

^[1]

Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)

Publication Date:: 2019-01-22

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

Contributing Org.:: ATLAS Collaboration

OSTI Identifier:: 1503099

Alternate Identifier(s):: OSTI ID: 1581330

Grant/Contract Number:: AC02-76SF00515; AC02-05CH11231

Resource Type:: Accepted Manuscript

Journal Name:: Nuclear Physics. A

Additional Journal Information:: Journal Volume: 982; Journal Issue: C; Journal ID: ISSN 0375-9474

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; jets; fragmentation functions; jet shapes

Citation Formats


                    Puri, Akshat. Measurement of angular and momentum distributions of charged particles within and around jets in Pb+Pb and pp collisions at sNN=5.02TeV with ATLAS at the LHC.  United States: N. p., 2019. 
Web.  doi:10.1016/j.nuclphysa.2018.09.021.

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                    Puri, Akshat. Measurement of angular and momentum distributions of charged particles within and around jets in Pb+Pb and pp collisions at sNN=5.02TeV with ATLAS at the LHC.  United States.  https://doi.org/10.1016/j.nuclphysa.2018.09.021

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                    Puri, Akshat. Tue .  
"Measurement of angular and momentum distributions of charged particles within and around jets in Pb+Pb and pp collisions at sNN=5.02TeV with ATLAS at the LHC".  United States.  https://doi.org/10.1016/j.nuclphysa.2018.09.021.  https://www.osti.gov/servlets/purl/1503099.

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@article{osti_1503099,

  title        = {Measurement of angular and momentum distributions of charged particles within and around jets in Pb+Pb and pp collisions at sNN=5.02TeV with ATLAS at the LHC},

  author       = {Puri, Akshat},

  abstractNote = {Studies of the fragmentation of jets into charged particles in heavy-ion collisions can help in understanding the mechanism of jet quenching by the hot and dense QCD matter created in such collisions, the quark-gluon plasma. These proceedings present a measurement of the angular distribution of charged particles around the jet axis in √sNN = 5.02 TeV Pb+Pb and pp collisions, done using the ATLAS detector at the LHC. The measurement is performed inside jets reconstructed with the anti-kt algorithm with radius parameter R = 0.4, and is extended to regions outside the jet cone. Here the results are presented as a function of Pb+Pb collision centrality, and both jet and charged-particle transverse momenta.},

  doi          = {10.1016/j.nuclphysa.2018.09.021},

  journal      = {Nuclear Physics. A},

  number       = C,

  volume       = 982,

  place        = {United States},

  year         = {2019},

  month        = {1}

}

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https://doi.org/10.1016/j.nuclphysa.2018.09.021

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Figure 1: Left: Closed (open) symbols show D(p_T, r) distributions in 0–10% Pb+Pb (pp) collisions as a function of angular distance r for 126 < p$^{jet}_T$ < 158 GeV for four p_T selections. Right: Ratios of D(p_T, r) distributions in 0–10% Pb+Pb collisions to pp collisions as a function ofmore »

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Title: Measurement of angular and momentum distributions of charged particles within and around jets in Pb+Pb and pp collisions at s NN = 5.02 TeV with ATLAS at the LHC

Abstract

Citation Formats

Figures / Tables:

Title: Measurement of angular and momentum distributions of charged particles within and around jets in Pb+Pb and pp collisions at $\sqrt{s_{NN}} = 5.02 TeV$ with ATLAS at the LHC