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Suppression and Azimuthal Anisotropy of Prompt and Non-prompt J/ψ in PbPb Collisions at √Snn

  • 저자

    조미희

  • 학위수여기관

    고려대학교 대학원

  • 학위구분

    국내박사

  • 학과

    물리학과 원자핵물리학 전공

  • 지도교수

    홍병식

  • 발행년도

    2014

  • 총페이지

    116p

  • 키워드

    Quarkonia Heavy-ion collisions Non-prompt J/psi Prompt J/psi The nuclear modification factor The elliptic flow;

  • 언어

    eng

  • 원문 URL

    http://www.riss.kr/link?id=T13541926&outLink=K  

  • 초록

    The study of J/ψ production is one of the golden probes to understand properties of the Quark-Gluon-Plasma (QGP), which is a hot and dense medium produced in high energy heavy-ion collisions. In this thesis, the nuclear modification factor (R_{AA}) of prompt and non-prompt J/ψ and azimuthal anisotropy of prompt J/ψ are presented based on the pp and PbPb collision datasets which were taken in 2011 at center of mass energy 2.76 TeV, corresponding to 231 nb^{-1} and 150 μb^{-1} , respectively. From the nuclear modification factor, suppression of prompt J/ψ at p_{T} > 6.5 GeV/c by a factor of 5 and non-prompt J/ψ by a factor of 2.5 at head-on collisions are observed compare to the proton-proton collisions. Azimuthal anisotropy of prompt J/ψ is measured as 0.054 ± 0.013(stat.) ± 0.006(syst.) in 10-60% centrality region. While the nuclear modification factor of prompt and non-prompt J/ψ measurement shows strong centrality dependent suppression pattern, azimuthal anisotropy of prompt J/ψ does not have any centrality, rapidity or p_{T} dependent pattern.


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