In:
Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2022, No. 10 ( 2022-10-10)
Abstract:
We present the first determination of V cb from inclusive $$ B\to {X}_c \ell {\overline{v}}_{\ell} $$ B → X c ℓ v ¯ ℓ using moments of the dilepton invariant mass, q 2 . These moments are reparametrization invariant quantities and depend on a reduced set of non-perturbative parameters. This reduced set of parameters opens a new path to extract these parameters up to $$ 1/{m}_b^4 $$ 1 / m b 4 purely from data and can potentially reduce the uncertainty on V cb . In this paper, we present our first determination of V cb using this method. Combining the recent measurements of q 2 moments by Belle and Belle II, our default fit gives |V cb | = (41 . 69 ± 0 . 63)·10 − 3 . This result presents an important independent cross check of, and is consistent with, the previous state-of-the-art inclusive determinations using lepton energy and hadronic invariant mass moments.
Type of Medium:
Online Resource
ISSN:
1029-8479
DOI:
10.1007/JHEP10(2022)068
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2022
detail.hit.zdb_id:
2027350-2
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