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    National Tsing Hua University Institutional Repository > 理學院 > 物理系 > 期刊論文 >  Z(0) DECAY INTO CHARMONIUM VIA CHARM QUARK FRAGMENTATION


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/55439


    Title: Z(0) DECAY INTO CHARMONIUM VIA CHARM QUARK FRAGMENTATION
    Authors: BRAATEN E;CHEUNG K;YUAN TC
    教師: 張敬民
    Date: 1993
    Publisher: American Physical Society
    Relation: PHYSICAL REVIEW D, American Physical Society, Volume 48, Issue 9, NOV 1 1993, Pages 4230-4235
    Keywords: E+E ANNIHILATIONS
    J/PSI-PRODUCTION
    LEP
    QCD
    Abstract: In decays of the Z0, the dominant mechanism for the direct production of charmonium states is the decay of the Z0 into a charm quark or antiquark followed by its fragmentation into the charmonium state. We calculate the fragmentation functions describing the splitting of charm quarks into S-wave charmonium states to leading order in the QCD coupling constant. Leading logarithms of M(Z)/m(c) are summed up using Altarelli-Parisi evolution equations. Our analytic result agrees with the complete leading order calculation of the rate for Z0 --> psiccBAR. We also use our fragmentation functions to calculate the production rate of heavy quarkonium states in W+/-, top quark, and Higgs boson decays.
    URI: http://www.aps.org/
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/55439
    Appears in Collections:[物理系] 期刊論文

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