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Title: First fragmentation function measurements from full jet reconstruction in heavy-ion collisions at $$\sqrt{s_{\mathrm{NN}}}=200$$ GeV by STAR

Abstract

Measurements of inclusive hadron suppression and di-hadron azimuthal correlations in ultra-relativistic nuclear collisions at RHIC have provided important insights into jet quenching in hot QCD matter, but are limited in their sensitivity due to well-known biases. Full jet reconstruction in heavy-ion collisions would conceptually provide a direct measurement of the energy of the scattered parton before energy loss, alleviating such biases and allowing a measurement of the energy loss probability distribution in a model-independent way from hard probes. In these proceedings we utilize recent progress in the reconstruction of jets in the heavy ion environment and present the first measurement of the fragmentation function from fully reconstructed jets in heavy ion collisions. The fragmentation function measured in central Au+Au collisions at $$\sqrt{s_{\mathrm{NN}}}=200$$ GeV will be presented and discussed with respect to p+p reference measurements.

Authors:
 [1]
  1. Yale Univ., New Haven, CT (United States). Dept. of Physics
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1511309
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 61; Journal Issue: 4; Journal ID: ISSN 1434-6044
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Putschke, Jörn. First fragmentation function measurements from full jet reconstruction in heavy-ion collisions at $\sqrt{s_{\mathrm{NN}}}=200$ GeV by STAR. United States: N. p., 2009. Web. https://doi.org/10.1140/epjc/s10052-009-0904-7.
Putschke, Jörn. First fragmentation function measurements from full jet reconstruction in heavy-ion collisions at $\sqrt{s_{\mathrm{NN}}}=200$ GeV by STAR. United States. https://doi.org/10.1140/epjc/s10052-009-0904-7
Putschke, Jörn. Sat . "First fragmentation function measurements from full jet reconstruction in heavy-ion collisions at $\sqrt{s_{\mathrm{NN}}}=200$ GeV by STAR". United States. https://doi.org/10.1140/epjc/s10052-009-0904-7. https://www.osti.gov/servlets/purl/1511309.
@article{osti_1511309,
title = {First fragmentation function measurements from full jet reconstruction in heavy-ion collisions at $\sqrt{s_{\mathrm{NN}}}=200$ GeV by STAR},
author = {Putschke, Jörn},
abstractNote = {Measurements of inclusive hadron suppression and di-hadron azimuthal correlations in ultra-relativistic nuclear collisions at RHIC have provided important insights into jet quenching in hot QCD matter, but are limited in their sensitivity due to well-known biases. Full jet reconstruction in heavy-ion collisions would conceptually provide a direct measurement of the energy of the scattered parton before energy loss, alleviating such biases and allowing a measurement of the energy loss probability distribution in a model-independent way from hard probes. In these proceedings we utilize recent progress in the reconstruction of jets in the heavy ion environment and present the first measurement of the fragmentation function from fully reconstructed jets in heavy ion collisions. The fragmentation function measured in central Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=200$ GeV will be presented and discussed with respect to p+p reference measurements.},
doi = {10.1140/epjc/s10052-009-0904-7},
journal = {European Physical Journal. C, Particles and Fields},
number = 4,
volume = 61,
place = {United States},
year = {2009},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
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Cited by: 32 works
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Figures / Tables:

Fig. 2.1 Fig. 2.1: Single event display of the summed charged and neutral $p_t$ per grid cell in the $η$, $\phi$ plane from 0–20% central HT triggered Au + Au collisions. Left panel: reconstructed di-jet with $p^{rec}_{t, jet}$ ≈ 21 GeV. Right panel: single jet with $p^{rec}_{t, jet}$ ≈ 47 GeV

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Works referenced in this record:

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    Works referencing / citing this record:

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    journal, January 2012

    • Armesto, Néstor; Ma, Hao; Mehtar-Tani, Yacine
    • Journal of High Energy Physics, Vol. 2012, Issue 1
    • DOI: 10.1007/jhep01(2012)109

    Medium-induced gluon branching
    journal, January 2013

    • Blaizot, Jean-Paul; Dominguez, Fabio; Iancu, Edmond
    • Journal of High Energy Physics, Vol. 2013, Issue 1
    • DOI: 10.1007/jhep01(2013)143

    The radiation pattern of a QCD antenna in a dilute medium
    journal, April 2012

    • Mehtar-Tani, Yacine; Salgado, Carlos A.; Tywoniuk, Konrad
    • Journal of High Energy Physics, Vol. 2012, Issue 4
    • DOI: 10.1007/jhep04(2012)064

    Observation and studies of jet quenching in PbPb collisions at s N N = 2.76 TeV
    journal, August 2011


    Decoherence and energy loss in QCD cascades in nuclear collisions
    journal, January 2011


      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.