Skip to main content

Research Repository

Advanced Search

B-mixing in and beyond the standard model

Lenz, Alexander


Alexander Lenz


We review the status of mixing of neutral B-mesons, including a discussion of the current precision of Standard Model (SM) predictions as well as the space that is left for effects of new physics. In that respect we present several observables, which are particularly sensitive to the remaining new physics (NP) parameter space. B-mixing can also be used to test the fundaments of quantum mechanics, here we suggest a new measurement of the ratio of like-sign dilepton events to opposite-sign dilepton events. Finally we summarise brie y the status of lifetimes of heavy hadrons. The corresponding theory predictions rely on the same tool - the Heavy Quark Expansion (HQE) - as some of the mixing quantities. New experimental data has recently proven the validity of the HQE to a high accuracy. How- ever, the theoretical precision of lifetime predictions is strongly limited by a lack of non-perturbative evaluations of matrix elements of dimension-six operators.


Lenz, A. (2014). B-mixing in and beyond the standard model.

Conference Name 8th International Workshop on the CKM Unitarity Triangle (CKM 2014)
Conference Location Vienna
Start Date Sep 8, 2014
End Date Sep 12, 2014
Acceptance Date Dec 7, 2015
Publication Date Jan 1, 2014
Deposit Date Dec 7, 2015
Publicly Available Date Jan 10, 2016
Publisher URL
Related Public URLs
Additional Information 8th International Workshop on the CKM Unitarity Triangle, 8-12 September 2014


You might also like

Downloadable Citations