The Heavy Quarkonium Spectrum at Order mα 5 s ln α s
نویسندگان
چکیده
We compute the complete leading-log terms of the next-to-next-to-next-to-leadingorder corrections to potential NRQCD. As a by-product we obtain the leading logs at O(mαs ) in the heavy quarkonium spectrum. These leading logs, when ΛQCD ≪ mα 2 s , give the complete O(mα 5 s lnαs) corrections to the heavy quarkonium spectrum. Preprint submitted to Elsevier Preprint 1 February 2008
منابع مشابه
Renormalization group improvement of the NRQCD Lagrangian and heavy quarkonium spectrum
We complete the leading-log renormalization group scaling of the NRQCD Lagrangian at O(1/m2). The next-to-next-to-leading-log renormalization group scaling of the potential NRQCD Lagrangian (as far as the singlet is concerned) is also obtained in the situation mαs ≫ ΛQCD. As a by-product, we obtain the heavy quarkonium spectrum with the same accuracy in the situation mαs ∼ ΛQCD. When ΛQCD ≪ mα ...
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تاریخ انتشار 1999