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Non-factorizable effects in B-anti-B mixing

A. Hiorth·J. O. Eeg
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Abstract

We study the B-parameter (``bag factor'') for B-anti-B mixing within a recently developed heavy-light chiral quark model. Non-factorizable contributions in terms of gluon condensates and chiral corrections are calculated. In addition, we also consider 1/m_Q corrections within heavy quark effective field theory. Perturbative QCD effects below μ= m_b known from other work are also included. Considering two sets of input parameters, we find that the renormalization invariant B-parameter is B = 1.51 +- 0.09 for B_d and B = 1.40 +- 0.16 for B_s.

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A. Hiorth, J. O. Eeg. 2003-02-28. Non-factorizable effects in B-anti-B mixing. https://doi.org/10.1140/epjcd%2Fs2003-01-006-4

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