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    請使用永久網址來引用或連結此文件: http://utaipeir.lib.utaipei.edu.tw/dspace/handle/987654321/2611


    題名: The Charm Parton Content of the Nucleon
    作者: Pumplin, J.
    Lai, H. L.
    Tung, W. K.
    貢獻者: 臺北市立教育大學自然科學系
    日期: 2007
    上傳時間: 2009-07-28 16:43:54 (UTC+8)
    摘要: We investigate the charm sector of the nucleon structure phenomenologically, using the most up-to-date global QCD analysis. Going beyond the common assumption of purely radiatively generated charm, we explore possible degrees of freedom in the parton parameter space associated with nonperturbative (intrinsic) charm in the nucleon. Specifically, we explore the limits that can be placed on the intrinsic charm (IC) component, using all relevant hard-scattering data, according to scenarios in which the IC has a form predicted by light-cone wave function models; or a form similar to the light sea-quark distributions. We find that the range of IC is constrained to be from zero (no IC) to a level 2--3 times larger than previous model estimates. The behaviors of typical charm distributions within this range are described, and their implications for hadron collider phenomenology are briefly discussed.
    Comment: 15 pages, LaTeX
    關聯: Physical Review D75:054029
    顯示於類別:[應用物理暨化學學系暨碩士班] 期刊論文

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