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    高師機構典藏 NKNUIR > 理學院 > 物理學系 > 期刊論文 >  Item 987654321/10759
    Please use this identifier to cite or link to this item: http://ir.nknu.edu.tw/ir/handle/987654321/10759


    題名: The anomaly lagrangian for the photoproduction of mesons on nucleons in the Skyrme model
    Authors: 黃建文
    Chien Wen Hwang
    貢獻者: 物理系
    Date: 1991-12-05
    Issue Date: 2010-11-11 09:07:10 (UTC+8)
    Abstract: We construct the anomaly lagrangian involving baryons, mesons and photons in the Skyrme model. The simplest process described by this lagrangian is neutral pion photoproduction on nucleons. The value of the electric dipole amplitude E0+ is calculated and compared with the experimental data. At the pion production threshold, we obtain E0+(anomaly)=2.99×10−3 fm=2.12× 10−3/mπ+. This value together with the low energy theorem prediction E0+(LET)=−2.4×10−3/mπ+ gives E0+=−0.28×10−3/mπ+, which is in good agreement with the measured value of E0+=(−0.5±0.3)×10−3/mπ+. This may reconcile the long-standing difference between the theoretical prediction and the experimental data.
    關聯: Physics Letters B / Volume 272, Issues 3–4, P.363–367
    Appears in Collections:[物理學系] 期刊論文
    [物理系] 黃建文

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