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Title: Beam-energy dependence of charge balance functions from Au + Au collisions at energies available at the BNL Relativistic Heavy Ion Collider

Journal Article · · Physical Review C
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less

Balance functions have been measured in terms of relative pseudorapidity (Δη) for charged particle pairs at the BNL Relativistic Heavy Ion Collider from Au + Au collisions at s NN =7.7GeV to 200 GeV using the STAR detector. These results are compared with balance functions measured at the CERN Large Hadron Collider from Pb + Pb collisions at s NN =2.76TeV by the ALICE Collaboration. The width of the balance function decreases as the collisions become more central and as the beam energy is increased. In contrast, the widths of the balance functions calculated using shuffled events show little dependence on centrality or beam energy and are larger than the observed widths. Balance function widths calculated using events generated by UrQMD are wider than the measured widths in central collisions and show little centrality dependence. The measured widths of the balance functions in central collisions are consistent with the delayed hadronization of a deconfined quark gluon plasma (QGP). The narrowing of the balance function in central collisions at s NN =7.7 GeV implies that a QGP is still being created at this relatively low energy.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
STAR Collaboration
Grant/Contract Number:
SC00112704; AC02-05CH11231
OSTI ID:
1340412
Alternate ID(s):
OSTI ID: 1295991; OSTI ID: 1341603; OSTI ID: 1423602
Report Number(s):
BNL-113251-2016-JA; BNL-112604-2016-JA; PRVCAN; R&D Project: PO 004; KB0202012; TRN: US1701716
Journal Information:
Physical Review C, Vol. 94, Issue 2; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

References (46)

Charged Particle Ratio Fluctuation as a Signal for Quark-Gluon Plasma journal September 2000
Net charge fluctuations in Au + Au collisions at s N N = 130 GeV journal October 2003
Flow Measurements via Two-Particle Azimuthal Correlations in A u + A u Collisions at s N N = 130 G e V journal October 2002
Methods for the study of particle production fluctuations journal October 2002
Balance functions, correlations, charge fluctuations, and interferometry journal April 2002
Microscopic models for ultrarelativistic heavy ion collisions journal January 1998
STAR detector overview
  • Ackermann, K. H.; Adams, N.; Adler, C.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3 https://doi.org/10.1016/S0168-9002(02)01960-5
journal March 2003
Charge conservation at energies available at the BNL Relativistic Heavy Ion Collider and contributions to local parity violation observables journal January 2011
Transverse-momentum p t correlations on (η, phi) from mean- p t fluctuations in Au–Au collisions at GeV journal May 2006
Statistical and dynamic models of charge balance functions journal May 2004
Measurement of Nonrandom Event-by-Event Fluctuations of Average Transverse Momentum in s N N = 200     G e V A u + A u and p + p Collisions journal August 2004
Experimental and theoretical challenges in the search for the quark–gluon plasma: The STAR Collaboration's critical assessment of the evidence from RHIC collisions journal August 2005
Event-by-event fluctuations in heavy ion collisions and the QCD critical point journal November 1999
Incident energy dependence of p t correlations at relativistic energies journal October 2005
Charge correlations using the balance function in Pb–Pb collisions at <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msqrt><mml:msub><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mi>N</mml:mi><mml:mi>N</mml:mi></mml:mrow></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>2.76</mml:mn><mml:mtext> </mml:mtext><mml:mtext>TeV</mml:mtext></mml:math> journal June 2013
Jet quenching and event-wise mean-pt fluctuations in central Au–Au collisions at sNN=200 GeV in Hijing-1.37 journal August 2003
Rapidity and energy dependence of the electric charge correlations in A + A collisions from 20 A to 158 A GeV journal August 2007
Event-by-event physics in relativistic heavy-ion collisions journal September 2001
Event-by-event fluctuations of average transverse momentum in central Pb+Pb collisions at 158 GeV per nucleon journal July 1999
Balance functions from Au + Au , d + Au , and p + p collisions at s NN = 200 GeV journal August 2010
Beam Energy Dependence of Moments of the Net-Charge Multiplicity Distributions in Au + Au Collisions at RHIC journal August 2014
Event-by-event fluctuations in mean p T and mean e T in s NN = 130 GeV Au+Au collisions journal August 2002
Clocking Hadronization in Relativistic Heavy-Ion Collisions with Balance Functions journal September 2000
System size and centrality dependence of the balance function in A + A collisions at s NN = 17.2 GeV journal March 2005
Removing distortions from charge balance functions journal July 2003
Hadronization geometry from net-charge angular correlations on momentum subspace <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mo stretchy="false">(</mml:mo><mml:mi>η</mml:mi><mml:mo>,</mml:mo><mml:mi>ϕ</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:math> in Au–Au collisions at <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msqrt><mml:msub><mml:mi>s</mml:mi><mml:mrow><mml:mi>N</mml:mi><mml:mi>N</mml:mi></mml:mrow></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>130</mml:mn><mml:mtext> GeV</mml:mtext></mml:math> journal March 2006
Narrowing of the Balance Function with Centrality in A u + A u Collisions at s N N = 130 G e V journal May 2003
K / π Fluctuations at Relativistic Energies journal August 2009
Energy Dependence of Moments of Net-Proton Multiplicity Distributions at RHIC journal January 2014
Long-range charge fluctuations and search for a quark-gluon plasma signal journal May 2001
Event-by-event fluctuations in collective quantities journal July 1999
Anomalous multiplicity fluctuations from phase transitions in heavy-ion collisions journal May 2001
Multiphase transport model for relativistic heavy ion collisions journal December 2005
Baryon number fluctuation and the quark-gluon plasma journal August 2001
Event-by-event fluctuations in particle multiplicities and transverse energy produced in 1 5 8 A GeV Pb+Pb collisions journal May 2002
Signatures of quark-gluon plasma formation in high energy heavy-ion collisions: a critical review journal January 1999
A single Time-of-Flight tray based on multigap resistive plate chambers for the STAR experiment at RHIC
  • Bonner, B.; Chen, H.; Eppley, G.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 508, Issue 1-2 https://doi.org/10.1016/S0168-9002(03)01347-0
journal August 2003
Thermal fluctuations in the interacting pion gas journal May 2002
Fluctuation Probes of Quark Deconfinement journal September 2000
Event-wise p t fluctuations in Au-Au collisions at s NN = 130 GeV journal June 2005
Relativistic hadron-hadron collisions in the ultra-relativistic quantum molecular dynamics model journal September 1999
Longitudinal scaling property of the charge balance function in <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi mathvariant="normal">Au</mml:mi><mml:mo>+</mml:mo><mml:mi mathvariant="normal">Au</mml:mi></mml:math> collisions at <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msqrt><mml:msub><mml:mi>s</mml:mi><mml:mrow><mml:mi>N</mml:mi><mml:mi>N</mml:mi></mml:mrow></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>200</mml:mn><mml:mtext> GeV</mml:mtext></mml:math> journal June 2010
Traces of Thermalization from p t Fluctuations in Nuclear Collisions journal April 2004
Event-by-event fluctuations of the mean transverse momentum in 40, 80, and 158  PbAu collisions journal November 2003
Signatures of the Tricritical Point in QCD journal November 1998
hijing: A Monte Carlo model for multiple jet production in pp , pA , and AA collisions journal December 1991


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