Data-driven subtraction of anisotropic flows in jet-like correlation studies in heavy-ion collisions

Zhang, Liang; Jiang, Kun; Li, Cheng; Liu, Feng; Wang, Fuqiang

doi:10.1103/physrevc.100.014903

Title: Data-driven subtraction of anisotropic flows in jet-like correlation studies in heavy-ion collisions

Abstract

Measurements of two-particle azimuthal angle correlations are a useful tool to study the distribution of jet energy loss; however, they are complicated because of the significant anisotropic flow background. We devise a data-driven method for subtracting anisotropic flow background in jet-like correlation analysis. We first require a large recoil momentum (P_x) within a given pseudorapidity (η) range from a high-transverse momentum particle to enhance in-acceptance population of away-side jet-like correlations. Then we take the difference of two-particle correlations in the close region and far region with respect to the η region of P_x to subtract the anisotropic flow background. Here, we use a toy model which contains only anisotropic flow and pythia8 which has jets, to demonstrate the validity of our data-driven method. The results indicate that the data-driven method can subtract anisotropic flow effectively.

Authors:

^[1]; Jiang, Kun ^[2]; Li, Cheng ^[3]; Liu, Feng ^[4]; Wang, Fuqiang ^[5]

Central China Normal Univ., Wuhan (China); Purdue Univ., West Lafayette, IN (United States)
Univ. of Science and Technology of China, Hefei (China); Purdue Univ., West Lafayette, IN (United States)
Univ. of Science and Technology of China, Hefei (China)
Central China Normal Univ., Wuhan (China)
Purdue Univ., West Lafayette, IN (United States); Huzhou Univ., Zhejiang (China)

Publication Date:: Thu Jul 11 00:00:00 EDT 2019

Research Org.:: Purdue Univ., West Lafayette, IN (United States)

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

OSTI Identifier:: 1611955

Alternate Identifier(s):: OSTI ID: 1563042

Grant/Contract Number:: SC0012910; de-sc0012910

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review C

Additional Journal Information:: Journal Volume: 100; Journal Issue: 1; Journal ID: ISSN 2469-9985

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Physics; Jets & heavy flavor physics; Particle correlations & fluctuations; Quark-gluon plasma

Citation Formats


                    Zhang, Liang, Jiang, Kun, Li, Cheng, Liu, Feng, and Wang, Fuqiang. Data-driven subtraction of anisotropic flows in jet-like correlation studies in heavy-ion collisions.  United States: N. p., 2019. 
Web.  doi:10.1103/physrevc.100.014903.

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                    Zhang, Liang, Jiang, Kun, Li, Cheng, Liu, Feng, & Wang, Fuqiang. Data-driven subtraction of anisotropic flows in jet-like correlation studies in heavy-ion collisions.  United States.  https://doi.org/10.1103/physrevc.100.014903

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                    Zhang, Liang, Jiang, Kun, Li, Cheng, Liu, Feng, and Wang, Fuqiang. Thu .  
"Data-driven subtraction of anisotropic flows in jet-like correlation studies in heavy-ion collisions".  United States.  https://doi.org/10.1103/physrevc.100.014903.  https://www.osti.gov/servlets/purl/1611955.

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@article{osti_1611955,

  title        = {Data-driven subtraction of anisotropic flows in jet-like correlation studies in heavy-ion collisions},

  author       = {Zhang, Liang and Jiang, Kun and Li, Cheng and Liu, Feng and Wang, Fuqiang},

  abstractNote = {Measurements of two-particle azimuthal angle correlations are a useful tool to study the distribution of jet energy loss; however, they are complicated because of the significant anisotropic flow background. We devise a data-driven method for subtracting anisotropic flow background in jet-like correlation analysis. We first require a large recoil momentum (Px) within a given pseudorapidity (η) range from a high-transverse momentum particle to enhance in-acceptance population of away-side jet-like correlations. Then we take the difference of two-particle correlations in the close region and far region with respect to the η region of Px to subtract the anisotropic flow background. Here, we use a toy model which contains only anisotropic flow and pythia8 which has jets, to demonstrate the validity of our data-driven method. The results indicate that the data-driven method can subtract anisotropic flow effectively.},

  doi          = {10.1103/physrevc.100.014903},

  journal      = {Physical Review C},

  number       = 1,

  volume       = 100,

  place        = {United States},

  year         = {Thu Jul 11 00:00:00 EDT 2019},

  month        = {Thu Jul 11 00:00:00 EDT 2019}

}

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Title: Data-driven subtraction of anisotropic flows in jet-like correlation studies in heavy-ion collisions

Abstract

Citation Formats

Matter in extremis: ultrarelativistic nuclear collisions at RHIC journal, April 2005

First Results from Pb+Pb Collisions at the LHC journal, November 2012

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

The PHOBOS perspective on discoveries at RHIC journal, August 2005

Quark–gluon plasma and color glass condensate at RHIC? The perspective from the BRAHMS experiment journal, August 2005

Gluon shadowing and jet quenching in A + A collisions at √ s =200 A GeV journal, March 1992

Formation of dense partonic matter in relativistic nucleus–nucleus collisions at RHIC: Experimental evaluation by the PHENIX Collaboration journal, August 2005

Novel phenomena in particle correlations in relativistic heavy-ion collisions journal, January 2014

Measuring away-side jet modifications in Au+Au collisions at RHIC journal, August 2015

A brief introduction to PYTHIA 8.1 journal, June 2008

First Results from Pb+Pb collisions at the LHC text, January 2012

Matter in extremis: ultrarelativistic nuclear collisions at RHIC text, January 2004

Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration text, January 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 text, January 2005

Matter in extremis: ultrarelativistic nuclear collisions at RHIC
journal, April 2005

First Results from Pb+Pb Collisions at the LHC
journal, November 2012

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

The PHOBOS perspective on discoveries at RHIC
journal, August 2005

Quark–gluon plasma and color glass condensate at RHIC? The perspective from the BRAHMS experiment
journal, August 2005

Gluon shadowing and jet quenching in A + A collisions at √ s =200 A GeV
journal, March 1992

Formation of dense partonic matter in relativistic nucleus–nucleus collisions at RHIC: Experimental evaluation by the PHENIX Collaboration
journal, August 2005

Novel phenomena in particle correlations in relativistic heavy-ion collisions
journal, January 2014

Measuring away-side jet modifications in Au+Au collisions at RHIC
journal, August 2015

A brief introduction to PYTHIA 8.1
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First Results from Pb+Pb collisions at the LHC
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Matter in extremis: ultrarelativistic nuclear collisions at RHIC
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Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
text, January 2004

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