[Theory-seminars] Theory seminar next week

[Astrid Hiller Blin]

Dear all,

Here is a reminder of next week's theory seminar. Please note the unusual
time:

*Theory seminar*
Monday October 26, *9:00 AM*

*Bastian Kubis* (Bonn University) will talk about "Hadronic contributions
to the muon's anomalous magnetic moment from analyticity".

*Abstract:*
The uncertainty in the Standard Model prediction for the anomalous magnetic
moment of the muon is by far dominated by hadronic effects.  I discuss how
different important contributions can be made more precise by using
rigorous theoretical constraints, especially due to analyticity: this
includes hadronic vacuum polarisation due to $3\pi$ and $\pi^0\gamma$
intermediate states, and hadronic light-by-light scattering via the largest
individual contribution therein, the $\pi^0$-pole term. The latter is
determined in terms of the $\pi^0$ transition form factor, for which a
representation that incorporates all low-lying singularities and matches
correctly onto the asymptotic behaviour expected from perturbative QCD has
been derived.  Further, ongoing, extensions of this work will briefly be
mentioned.

Bluejeans connection: https://bluejeans.com/801786278
<https://urldefense.proofpoint.com/v2/url?u=https-3A__bluejeans.com_801786278&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=AIMSQQ81YDyrZuJNGks2qw&m=aT_3J5jjiFmHtFXffqbfPqEY_A73NEWw2ebyFyL_eCA&s=YNm3qgT5e8sJgKfZ9vFA_w--imuXwmeAjg0C4AslLwg&e=>

Best wishes,
Astrid, Christos, Filippo, Miguel
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