Comparing B→Xulv̄l to B→Xsγ and the determination of |Vub|/|Vts|

Thomas Mannel, Stefan Recksiegel

Research output: Contribution to journalReview articlepeer-review

19 Scopus citations

Abstract

We suggest a method to determine Vub/Vts through a comparison of B→Xulv̄l and B→Xsγ. The relevant quantity is the spectrum of the light-cone component of the final state hadronic momentum, which in B →Xsγ is the photon energy while in B→Xulv̄l this requires a measurement of both hadronic energy and hadronic invariant mass. The non-perturbative contributions at the tree level to these distributions are identical and may be canceled by taking the ratio of the spectra. Radiative corrections to this comparison are discussed to order αs and are combined with the non-perturbative contributions.

Original languageEnglish
Article number114040
Pages (from-to)1-9
Number of pages9
JournalPhysical Review D
Volume60
Issue number11
DOIs
StatePublished - 1 Dec 1999
Externally publishedYes

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