Matrix elements of four-quark operators relevant to life time difference \Delta \Gamma _{B_s} from QCD sum rules |
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| Authors: | C-S Huang Ailin Zhang S-L Zhu |
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| Institution: | (1) Institute of Theoretical Physics, Academia Sinica, P.O. Box 2735, Beijing 100080, P.R. China, CN;(2) Department of Physics, University of Connecticut, Storrs, CT 06269, USA, US |
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| Abstract: | We extract the matrix elements of four-quark operators relevant to the and life time difference from QCD sum rules. We find that the vacuum saturation approximation works reasonably well, i.e., within
10%. We discuss the implications of our results and compare them with a recent lattice QCD determination.
Received: 23 April 2001 / Revised version: 27 May 2001 / Published online: 19 July 2001 |
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