Qcd Corrections to Inclusive ∆s = 1, 2 Transitions
نویسنده
چکیده
The talk summarises a calculation of the two-point functions for ∆S = 1 current-current and QCD-penguin operators, as well as for the ∆S = 2 operator, at the next-to-leading order. The size of the gluonic corrections to current-current operators is large, providing a qualitative understanding of the observed enhancement in ∆I = 1/2 transitions. In the ∆S = 2 sector the QCD corrections are quite moderate (≈ −20%). This work has been done in collaboration with Antonio Pich.
منابع مشابه
QCD corrections to inclusive ∆ S = 1 , 2 transitions at the next - to - leading order
The 2–point functions for ∆S = 1 current-current and QCD-penguin operators, as well as for the ∆S = 2 operator, are calculated at the next-to-leading order. The calculation is performed in two different renormalization schemes for γ5, and the compatibility of the results obtained in the two schemes is verified. The scaleand scheme-invariant combinations of spectral 2–point functions and corresp...
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