Determination of the quark coupling strength vertical bar V-ub vertical bar using baryonic decays
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Published version
Published version
Author(s)
Type
Journal Article
Abstract
In the Standard Model of particle physics, the strength of the couplings of the b quark to the u and c quarks, |Vub| and |Vcb|, are governed by the coupling of the quarks to the Higgs boson. Using data from the LHCb experiment at the Large Hadron Collider, the probability for the Λb0 baryon to decay into the p final state relative to the final state is measured. Combined with theoretical calculations of the strong interaction and a previously measured value of |Vcb|, the first |Vub| measurement to use a baryonic decay is performed. This measurement is consistent with previous determinations of |Vub| using B meson decays to specific final states and confirms the existing incompatibility with those using an inclusive sample of final states.
Date Issued
2015-07-27
Date Acceptance
2015-06-25
Citation
Nature Physics, 2015, 11 (9), pp.743-747
ISSN
1745-2481
Publisher
Nature Publishing Group
Start Page
743
End Page
747
Journal / Book Title
Nature Physics
Volume
11
Issue
9
Copyright Statement
This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
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Subjects
Science & Technology
Physical Sciences
Physics, Multidisciplinary
Physics
Publication Status
Published