Seminar on Precision Physics and Fundamental Symmetries

Flavour anomalies - a first glimpse to physics beyond the Standard Model

by Stephanie Hansmann-Menzemer (Ruprecht Karls Universitaet Heidelberg (DE))

Europe/Zurich
Description

Electroweak penguin (EWP) decays are Flavour Changing Neutral Currents mediated via loop or box diagrams. As such, they are suppressed in the Standard Model (SM) and sensitive to effects from new heavy particles (New Physics). There has been increasing interest in EWP decays of b-hadrons, due to the emergence of several intriguing tensions between measured observables and SM predictions. Of particular interest are measurements of decay rates and angular observables, as well as lepton flavour universality tests, where clean SM predictions are available. The tensions in this area are for individual measurements at the level of 2-3 standard deviations (σ). However a consistent picture seems to emererge which constitutes part of the so-called flavour anomalies. This talk will give an overview of the recent most relevant analyses of
EWP b-hadron decays, with focus on results from the LHCb experiment.
Possible theoretical interpretations of the anomalies will also briefly be discussed.

 

To participate in this seminar, check this link

https://us04web.zoom.us/j/932734874

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In case of questions contact Stefan Ulmer (stefan.ulmer@cern.ch)