1932

Abstract

Semileptonic decays of mesons play a critical role in the determination of the magnitude of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements and . These two quantities are fundamental parameters of the Standard Model and have to be determined experimentally. Over the past decade, the vast samples of mesons recorded at the factories at LEP at Cornell University, KEK at Tsukuba, and SLAC at Stanford University have allowed for detailed studies of semileptonic decays. These decays proceed via first-order weak interactions; thus, they are expected to be free of non–Standard Model contributions and therefore are well suited for the extraction of the quark-mixing parameters. Differential decay rates are combined with theoretical calculations of hadronization effects, leading to a substantially improved knowledge of || and ||. The results are used to constrain the parameters of the CKM matrix and to test the Standard Model predictions for -violating effects.

Loading

Article metrics loading...

/content/journals/10.1146/annurev.nucl.012809.104421
2011-11-23
2024-06-17
Loading full text...

Full text loading...

/content/journals/10.1146/annurev.nucl.012809.104421
Loading
/content/journals/10.1146/annurev.nucl.012809.104421
Loading

Data & Media loading...

Supplementary Data

  • Article Type: Review Article
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error