Charm-Quark Contribution to K_L -> mu^+ mu^- at Next-to-Next-to-Leading

We calculate the charm-quark contribution to the decay K_L -> mu^+ mu^- in next-to-next-to-leading order of QCD. This new contribution reduces the theoretical uncertainty in the relevant parameter P_c from +/-22% down to +/-7%, corresponding to scale uncertainties of +/-3% and +/-6% in the sh...

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Үндсэн зохиолчид: Gorbahn, M, Haisch, U
Формат: Journal article
Хэвлэсэн: 2006

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