The QCD NLO Corrections to Inclusive $B_c^{\ast }$ Production in $Z^0$ Decays

Abstract

We calculate the next-to-leading order(NLO) quantum chromodynamics(QCD) corrections to the inclusive process of $Z_0\to B_c^{\ast }+\bar{c}+b$ under the non-relativistic QCD(NRQCD) factorization scheme. Technical details about contributions from vector and axial-vector currents in dimensional regularization scheme are discussed. Numerical calculation shows that the NLO correction enhances the leading-order decay width by about 50%, and the dependence on renormalization scale $\mu$ is reduced. The uncertainties induced by quark masses and the renormalization scale $\mu$ are also analyzed.

17 pages, 11 figures; v2:typos fixed, references added, Fig.5 replaced, revised version; to appear in PRD

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Cited by in corpus (1)

• Next-to-leading order QCD corrections to paired $B_c$ production in $e^{+}{e}^{-}$ annihilation