QCD Corrected $1/m_b$ Contributions to $B\bbar$--Mixixng

Details QCD Corrected $1/m_b$ Contributions to $B\bbar$--Mixixng QCD Corrected $1/m_b$ Contributions to $B\bbar$--Mixixng

1992-11-30

arxiv.org/abs/hep-ph/9211333v1

Phys.Lett. B301 (1993) 382-392

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 Pages, LaTeX, 3 figures in separate uuencoded Postscript file, Darmstadt report IKDA 92 / 36

Scientific paper

10.1016/0370-2693(93)91167-L

We calculate the QCD corrected effective Hamiltonian for $B\bbar$--Mixing in heavy quark effective theory including corrections of the order $\Lambda_{QCD} / m_b$. The matrix elements of the subleading operators are estimated using the vacuum insertion assumption. We show that the major part of the subleading corrections may be absorbed into the heavy meson decay constant $f_B$; the remaining corrections are only due to QCD effects and give an enhancement of $\Delta M$ of 5\%.

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