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Matrix Elements of Four-quark Operators Relevant to Lifetime Difference ΔΓ_{B_s} from QCD Sum Rules

C. -S. Huang·Ailin Zhang·Shi-Lin Zhu
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Abstract

We extract the matrix elements of four quark operators O_{L,S} relevant to the B_s and \bar B_s life time difference from QCD sum rules. We find the vacuum saturation approximation works reasonably well, i.e., within 10%. We discuss the implications of our results and compare them with the recent lattice QCD determination.

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C. -S. Huang, Ailin Zhang, Shi-Lin Zhu. 2001-04-07. Matrix Elements of Four-quark Operators Relevant to Lifetime Difference ΔΓ_{B_s} from QCD Sum Rules. https://doi.org/10.1007/s100520100724

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