Effective field theory approach to QED corrections in flavour physics
DOI:
https://doi.org/10.23731/CYRM-2020-003.107Abstract
Thanks to the accurate measurements performed at the low-energy facilities and the LHC, flavour physics of light quarks, especially the bottom quark, emerged on the precision frontier for tests of the Standard Model (SM) and in searches for new physics effects. On the theoretical side, short-distance perturbative higher-order QCD and electroweak corrections are under good control for many processes. Moreover, tremendous progress in lattice computations allows percentage to even subpercentage accuracy to be achieved for long-distance non-perturbative quantities. This allows for the prediction of some key observables with unprecedented accuracy and, in turn, the determination of short-distance parameters, such as the elements of the quark- mixing matrix (CKM) in the framework of the SM. Given these prospects, it is also desirable to improve the understanding and treatment of QED corrections, which are generally assumed to be small. Unfortunately, not much new development has taken place in the evaluation of such corrections.
Downloads
Published
Issue
Section
License
Authors who publish with this publication agree to the following terms:
- CERN retains copyright and publishes the work licensed under the Creative Commons Attribution License 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this series.
- Authors are able to enter into separate, additional contractual arrangements for distribution of the published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this series.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).