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arXiv · hep-ph/9811475

Determination of HQET parameter λ_1 from Inclusive Semileptonic B Meson Decay Spectrum

K. K. Jeong·C. S. Kim
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Abstract

We estimate the heavy quark effective theory parameter λ_1 from inclusive semileptonic B-meson decay spectrum. By using recent CLEO double lepton tagging data of B -> X e nu, which shows the lepton momentum as low as 0.6 GeV, we extracted λ_1 \sim -0.58 GeV^2. We also derived \barΛ\sim 0.46 GeV and |V_{cb}| = 0.041 \pm 0.002.

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K. K. Jeong, C. S. Kim. 1999-02-18. Determination of HQET parameter λ_1 from Inclusive Semileptonic B Meson Decay Spectrum. https://doi.org/10.1103/physrevd.59.114019

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