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2001-12-14
\Lambda_b Lifetime from the HQET Sum Rule
Chao-Shang HuangChun LiuShi-Lin Zhu
文献摘要
The HQET sum rule analysis for the \Lambda_b matrix element of the four-quark operator relevant to its lifetime is reported. Our main conclusion is that the lifetime ratio \tau(\Lambda_b)/\tau(B^0) can be as low as 0.91.
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