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    National Tsing Hua University Institutional Repository > 理學院 > 物理系 > 期刊論文 >  Decay of Z boson into photon and unparticle

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/55865

    Title: Decay of Z boson into photon and unparticle
    Authors: Kingman Cheung;Thomas W. Kephart;Wai-Yee Keung;Tzu-Chiang Yuan
    教師: 張敬民
    Date: 2008
    Publisher: Elsevier
    Relation: Physics Letters B, American Physical Society, Volume 662, Issue 5, May 2008, Pages 436-440
    Keywords: Z decay into photon+unparticle
    standard model Z boson
    axial-vector unparticle
    photon spectrum
    Abstract: We study the decay of the standard model Z boson into unparticle plus a single photon through a one-loop process. As in the anomaly type decay, only the axial-vector part of the Z coupling matching with the vector unparticle and/or the vector part of the Z coupling matching with the axial-vector unparticle can give a nonzero contribution to the decay. We show that the photon spectrum terminates at the end point in accord with Yang's theorem. Existing data on single photon production at LEP I is used to constrain the unparticle sector.
    URI: http://www.elsevier.com/
    Appears in Collections:[物理系] 期刊論文

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