Status of B-mixing in the standard model and beyond

11th International Conference on Hyperons, Charm and Beauty Hadrons

Bobeth, Christoph^1

Technische Universität München, Institute for Advanced Study, Garching

D-85748, Germany^1

关键词: Charge asymmetries;    Lattice methods;    Matrix elements;    New physics;    Nonperturbative;    Potential effects;    The standard model;    Theoretical methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/556/1/012039/pdf
DOI  :  10.1088/1742-6596/556/1/012039

来源: IOP

【 摘 要 】

The theoretical methods underlying predictions of mixing quantities ΔMq, and ΔΓqare well understood nowadays. Currently the uncertainties are dominated by nonperturbative matrix elements of local |ΔB| 2 operators of dimension 6 and 7, which require preciser calculations, hopefully with lattice methods in the future. Global fits show good support of the standard model, restricting potential effects of new physics to be small. An improved measurement of ΔΓdwill be helpful to further analyse the dimuon charge asymmetry as measured by DØ.