Darkness Visible: AI in Cosmological Experiments
The talk will start by summarising the status of large galaxy surveys and “tensions" in the standard cosmological Lambda-Cold-Dark-Matter model. We will then describe the important role of Artificial Intelligence and Machine Learning in analysing the next generation of surveys of billions of objects, and the training of the next generation of physicists for the big data challenges.
Friday, 30 October 2020, ore 14:30 — Webex seminar
Constraints on new physics from nuclear beta transitions
Precision measurements are an integral part of particle physics. They
are essential for determining free parameters of the Standard Model
(SM), and also for searching for signals of new physics beyond the SM.
Apart from collider results from LEP, Tevatron, and the LHC, the
increasing role is being played by precision measurements performed at
much lower energies, well below the weak scale. In this talk I will
review the place of nuclear beta transitions in this program. Thanks
to the improving accuracy of experiment, theory, and lattice
calculations, the precision level of beta transitions is reaching
order 10^-4 in some cases. In particular, the so-called superallowed
beta transitions give currently the most precise determination of the
Vud parameter in the CKM matrix. I will describe the wide spectrum of
current and planned experiments, and how they improve our
understanding of the SM and non-SM physics. Finally, I will discuss
the role of the so-called mirror beta transitions in this precision
program.
Friday, 16 October 2020, ore 14:30 — Webex seminar