Determination of the HQET parameter λ1 from an inclusive semileptonic B meson decay spectrum

K. K. Jeong, Choong Sun Kim

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We estimate the heavy quark effective theory parameter λ1 from the inclusive semileptonic B-meson decay spectrum. By using recent CLEO double lepton tagging data of B→Xeν, which show the lepton momentum as low as 0.6 GeV, we extracted λ1∼-0.58 GeV2. We also derived Λ̄∼0.46 GeV and |Vcb|=0.041±0.002.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number11
Publication statusPublished - 1999 Jun 1


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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