fK/fπ ratio from QCD sum rules
نویسندگان
چکیده
We present a QCD sum rule calculation for the decay constants fπ, fK using the correlation function of the axial vector mesons. Our calculations are only weakly dependent on the SU(3) breaking parameter for the QCD vacuum and gives for the ratio fK/fπ = 1.11 ± 0.02. PACS numbers: 11.30.Rd, 11.55.Hx, 14.40.-n Typeset using REVTEX E-mail: [email protected] E-mail: [email protected] 1
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تاریخ انتشار 1997