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用QCD求和规则和光锥求和规则研究K^*0(1430)→Kπ衰变

Analysis of Processes K^*0(1430)→Kπ in QCD Sum Rule and Light-Cone Sum Rule
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摘要 用QCD求和规则和光锥求和规则,对K^*0(1430)→Kπ过程进行了研究,从而确定了耦合常数gK^*0(1430)Kπ.发现用QCD求和规则不能解决问题.然而,在光锥求和规则中,当域s0=3.3~3.5时,得到:gK^*0(1430)Kπ=3.8±0.4GeV,与实验值gK^*0(1430)Kπ=3.9±0.3GeV符合. We study K^*0(1430)→Kπ decay in QCD sum rule and Light-cone sum rule. The QCD sum rule cannot solve the problem. In Light-cone sum rule, when so =3.3-3.5 GeV, we get gK^*0(1430)--↑K^0π=3.8±0.4 GeV, which agrees with experimental data gK^*0(1430)--↑K^0π= 3.9 ± 0.3 GeV .
作者 韩琳 鲁公儒
出处 《河南师范大学学报(自然科学版)》 CAS CSCD 北大核心 2007年第2期61-65,共5页 Journal of Henan Normal University(Natural Science Edition)
基金 国家自然科学基金(10575029)
关键词 QCD(光锥)求和规则 色散关系 算符乘积展开 Borel变换 扭度 修正方程 QCD (Light-cone) sum rule dispersion relation operator-product expansion T Borel transformation Twist wave function
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