18–22 Jun 2018
Estonian Academy of Sciences
Europe/Tallinn timezone

Are the LHCb etc. Tensions due to Non-perturbative Effects in Pure Standard Model ?

20 Jun 2018, 09:55
25m
Conference Hall (Estonian Academy of Sciences)

Conference Hall

Estonian Academy of Sciences

Kohtu 6, Tallinn, Estonia

Speaker

Prof. Holger Becht Nielsen

Description

We discuss the suggestion that the (small) tensions seemingly violating the Stadard Model predictions for lepton universality and for Flavour changing neutral current (FCNC) decay of B-mesons could be actual effects but still compatible with pure Standard Model, because they should be due to non-perturbative effects. In fact we want to point out that to settle whether a given coupling cosntant - being perhaps of order unity - should indeed be counted as so large as to truly give rise to non-perturbative effects one shall not only look at how large it is compared to $4\pi$ or $(4\pi)^2$, but also as to how many internal degrees of freedom the coupled particles have. The coupling constant, which we have long speculated to be large enough to cause non-perturbative effects of significans is of course the top-yukawa-coupling $g_t$.

Author

Prof. Holger Becht Nielsen

Presentation materials