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Time evolution of non-Gaussian fluctuations in heavy ion collisions

Research Project

Project/Area Number 25800148
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionOsaka University

Principal Investigator

Kitazawa Masakiyo  大阪大学, 理学(系)研究科(研究院), 助教 (10452418)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords非ガウスゆらぎ / 重イオン衝突実験 / QCD臨界点 / ビームエネルギー走査実験 / キュムラント / 保存電荷ゆらぎ / 高次キュムラント / バリオン数 / クォークグルオンプラズマ / ゆらぎ / 拡散マスター方程式
Outline of Final Research Achievements

The relativistic heavy-ion collisions are important experimental tool to investigate the new state of matter called the quark-gluon plasma on the earth. In the present research, I extensively studied non-Gaussian fluctuations of conserved charges which acquire much attention recently in this field as important experimental observables which enable us to investigate properties of the hot medium in early stage created by the heavy-ion collisions. In particular, we studied rapidity window dependences as experimental tools to understand early-stage thermodynamics, finite volume effects and efficiency problem in fluctuation observables in experiments for the first time. These results received much attention over the world and I accepted invitations to international conferences more than 10 times during this period.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (25 results)

All 2016 2015 2014 2013

All Journal Article (11 results) (of which Peer Reviewed: 9 results,  Acknowledgement Compliant: 5 results,  Open Access: 2 results) Presentation (14 results) (of which Int'l Joint Research: 5 results,  Invited: 11 results)

  • [Journal Article] Rapidity window dependences of higher order cumulants and diffusion master equation2015

    • Author(s)
      Masakiyo Kitazawa
    • Journal Title

      Nuclear Physics A

      Volume: 942 Pages: 65-96

    • DOI

      10.1016/j.nuclphysa.2015.07.008

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Dilepton production spectrum above Tc with a lattice quark propagator2015

    • Author(s)
      Taekwang Kim, Masayuki Asakawa, Masakiyo Kitazawa
    • Journal Title

      Physical Review D

      Volume: 92 Issue: 11

    • DOI

      10.1103/physrevd.92.114014

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Dilepton production spectrum above Tc analyzed with a lattice quark propagator2015

    • Author(s)
      Taekwang Kim, Masayuki Asakawa, Masakiyo Kitazawa
    • Journal Title

      Proceedings of Science

      Volume: CPOD2014

    • Related Report
      2015 Annual Research Report
    • Open Access
  • [Journal Article] Measurement of thermodynamics using gradient flow2015

    • Author(s)
      M. kitazawa, M. Asakawa, T. Hatsuda, T. Iritani, E. Itou and H. Suzuki
    • Journal Title

      Proceedings of Science

      Volume: LATTICE2014

    • Related Report
      2015 Annual Research Report
    • Open Access
  • [Journal Article] Effects of global charge conservation on time evolution of cumulants of conserved charges in relativistic heavy ion collisions2014

    • Author(s)
      Miki Sakaida, Masayuki Asakawa, and Masakiyo Kitazawa
    • Journal Title

      Physical Review C

      Volume: 90 Issue: 6

    • DOI

      10.1103/physrevc.90.064911

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Emergence of soft quark excitations by the coupling with a soft mode of the QCD critical point2014

    • Author(s)
      Masakiyo Kitazawa, Teiji Kunihiro, Yukio Nemoto
    • Journal Title

      Phys. Rev. D

      Volume: 90 Issue: 11

    • DOI

      10.1103/physrevd.90.116008

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Thermodynamics of SU(3) gauge theory from gradient flow on the lattice2014

    • Author(s)
      Masayuki Asakawa, Tetsuo Hatsuda, Etsuko Itou, Masakiyo Kitazawa, and Hiroshi Suzuki
    • Journal Title

      Physical Review D

      Volume: 90 Issue: 1

    • DOI

      10.1103/physrevd.90.011501

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Shear viscosity to relaxation time ratio in SU(3) lattice gauge theory2014

    • Author(s)
      Y. Kohno, M. Asakawa, and M. Kitazawa
    • Journal Title

      Physical Review D

      Volume: 89 Issue: 5 Pages: 0545081-8

    • DOI

      10.1103/physrevd.89.054508

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Possible generation of anomalously soft quark excitations at nonzero temperature: Nonhyperbolic dispersion of the parapion and van Hove singularity2014

    • Author(s)
      Masakiyo Kitazawa, Teiji Kunihiro, and Yukio Nemoto
    • Journal Title

      Phys. Rev. D

      Volume: 89 Issue: 5 Pages: 0560021-10

    • DOI

      10.1103/physrevd.89.056002

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Non-Equilibrium Time Evolution of Higher Order Cumulants of Conserved Charges and Event-by-Event Analysis2014

    • Author(s)
      M. Kitazawa, M. Asakawa, and H. Ono
    • Journal Title

      Physics Letters

      Volume: B728 Pages: 386-392

    • DOI

      10.1016/j.physletb.2013.12.008

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] On the Effect of Secondary Protons on Baryon and Proton Number Cumulants in Event-by-event Analysis2013

    • Author(s)
      H. Ono, M. Asakawa, and M. Kitazawa
    • Journal Title

      Physical Review C

      Volume: 87 Issue: 4

    • DOI

      10.1103/physrevc.87.041901

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] For the J-PARC heavy-ion collisions2016

    • Author(s)
      Masakiyo Kitazawa
    • Organizer
      The 31st Reimei Workshop on Hadron Physics in Extreme Conditions at J-PARC
    • Place of Presentation
      J-PARC, Tokai, Japan
    • Year and Date
      2016-01-18
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Diffusion of conserved-charge fluctuations2015

    • Author(s)
      Masakiyo Kitazawa
    • Organizer
      EMMI Workshop on Fluctuations in Strongly Interacting Hot and Dense Matter: Theory and Experiment
    • Place of Presentation
      GSI, Darmstadt, Germany
    • Year and Date
      2015-11-02
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] QCD Thermodynamics from Gradient Flow2015

    • Author(s)
      Masakiyo Kitazawa, for FlowQCD Collaboration
    • Organizer
      The 13th international eXtreme QCD (XQCD)
    • Place of Presentation
      Wuhan, China
    • Year and Date
      2015-09-21
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Rapidity window and centrality dependences of higher order cumulants2015

    • Author(s)
      Masakiyo Kitazawa
    • Organizer
      HIC for FAIR workshop on Fluctuation and Correlation Measures in Nuclear Collisions 2015
    • Place of Presentation
      Frankfurt, Germany
    • Year and Date
      2015-07-29
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Thermodynamics and reference scale of SU(3) gauge theory from gradient flow on fine lattices2015

    • Author(s)
      Masakiyo Kitazawa, for FlowQCD Collaboration
    • Organizer
      The 33rd International Symposium on Lattice Field Theory (LATTICE2015)
    • Place of Presentation
      Kobe, Japan
    • Year and Date
      2015-07-14
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Non-Gaussian fluctuations in relativistic heavy ion collisions2014

    • Author(s)
      Masakiyo Kitazawa
    • Organizer
      Frontiers of Theoretical Science – MATTER, LIFE and COSMOS
    • Place of Presentation
      Kavli IPMU, Kashiwa, Japan
    • Year and Date
      2014-11-06
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Understanding fluctuations using rapidity window and collision energy dependences2014

    • Author(s)
      Masakiyo Kitazawa
    • Organizer
      Workshop on Beam Energy Scan II
    • Place of Presentation
      LBNL, Berkeley, USA
    • Year and Date
      2014-09-27 – 2014-09-29
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Energy-momentum tensor and thermodynamics of lattice gauge theory from gradient flow2014

    • Author(s)
      Masakiyo Kitazawa
    • Organizer
      The 5th Asian Triangle Heavy Ion Conference 2014 (ATHIC 2014)
    • Place of Presentation
      Osaka University, Japan
    • Year and Date
      2014-08-05 – 2014-08-08
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Measurement of thermodynamics using gradient flow2014

    • Author(s)
      Masakiyo Kitazawa
    • Organizer
      The 32nd International Symposium on Lattice Field Theory (LATTICE 2014)
    • Place of Presentation
      Columbia University, NY, USA
    • Year and Date
      2014-06-23 – 2014-06-28
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Fluctuations and QCD phase structure2014

    • Author(s)
      Masakiyo Kitazawa
    • Organizer
      XXIV International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2014)
    • Place of Presentation
      Darmstadt, Germany
    • Year and Date
      2014-05-19 – 2014-05-24
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Fluctuations of Conserved Charges: Theory, experiment, and lattice2014

    • Author(s)
      Masakiyo Kitazawa
    • Organizer
      Lattice QCD at finite temperature and density
    • Place of Presentation
      KEK, Tsukuba, Japan
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Fluctuations of conserved charges as probes of QCD phase structure2014

    • Author(s)
      Masakiyo Kitazawa
    • Organizer
      The first J-PARC Heavy-Ion Workshop
    • Place of Presentation
      J-PARC, Tokai, Japan
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Diffusion of non-Gaussianity in heavy ion collisions2013

    • Author(s)
      Masakiyo Kitazawa, Masayuki Asakawa, Hirosato Ono
    • Organizer
      SQM2013 -Strangeness in Quark Matter-
    • Place of Presentation
      Birmingham, United Kingdom
    • Related Report
      2013 Research-status Report
  • [Presentation] Dynamics of non-Gaussianity in heavy ion collisions2013

    • Author(s)
      Masakiyo Kitazawa
    • Organizer
      NFQCD2013 -New Frontiers in QCD 2013-
    • Place of Presentation
      YITP, Kyoto, Japan
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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