A new model-independent method of determining |Vub/Vcb| and |Vub|

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In order to determine the ratio of CKM matrix elements |Vub/Vcb| (and |Vub|), we propose a new model-independent method based on the heavy quark effective theory, which is theoretically described by the phase space factor and the well-known perturbative QCD correction only. In the forthcoming asymmetric B-experiments with microvertex detectors, BABAR and BELLE, the total separation of b → u semileptonic decays from the dominant b → c semileptonic decays would be experimentally viable. We explore the possible experimental option: the measurement of inclusive hadronic invariant mass distributions. We also clarify the relevant experimental backgrounds.

Original languageEnglish
Pages (from-to)347-353
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number3-4
Publication statusPublished - 1997 Nov 27

Bibliographical note

Funding Information:
The work was supported in part by the Basic Science Research Institute Program, Ministry of Education 1997, Project No. BSRI-97-2425, in part by CTP of SNU, in part by Yonsei University Faculty ResearchF und of 1997,i n part by Non-Directed-Research-Fund 1997,K RF, and in part by KOSEF-DFG large collaboration project, Project No. 96-0702-01-01-2.

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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