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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

Journal Article · · European Physical Journal. C, Particles and Fields
 [1]
  1. Yale Univ., New Haven, CT (United States). Dept. of Physics
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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.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1511309
Journal Information:
European Physical Journal. C, Particles and Fields, Vol. 61, Issue 4; ISSN 1434-6044
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (9)

Synthesis of Trifluoromethyltriazoles via 1,3-Dipolar Cycloaddition journal July 2008
Disappearance of Back-To-Back High- p T Hadron Correlations in Central A u + A u Collisions at s N N = 200     G e V journal February 2003
Jet study in ultra-relativistic heavy-ion collisions with the ALICE detector at the LHC journal July 2004
Prospects of medium tomography using back-to-back hadron correlations journal May 2007
Longitudinal Double-Spin Asymmetry and Cross Section for Inclusive Jet Production in Polarized Proton Collisions at s = 200     GeV journal December 2006
Transverse-Momentum and Collision-Energy Dependence of High- p T Hadron Suppression in A u + A u Collisions at Ultrarelativistic Energies journal October 2003
The catchment area of jets journal April 2008
Direct Observation of Dijets in Central Au + Au Collisions at s N N = 200     GeV journal October 2006
A brief introduction to PYTHIA 8.1 journal June 2008

Cited By (2)

Decoherence and energy loss in QCD cascades in nuclear collisions journal January 2011
sPHENIX: An Upgrade Concept from the PHENIX Collaboration preprint January 2012

Figures / Tables (8)

Fig. 2.1(p. 3)figure Fig. 2.1
Fig. 2.2(p. 4)figure Fig. 2.2
Fig. 2.3(p. 5)figure Fig. 2.3
Fig. 3,1(p. 6)figure Fig. 3,1
Fig. 3.2(p. 6)figure Fig. 3.2
Fig. 4.1(p. 7)figure Fig. 4.1
Fig. 4.2(p. 7)figure Fig. 4.2
Fig. 5.1(p. 8)figure Fig. 5.1

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS