Quirks in Quark Flavour Physics

Session

Day 1

14 Jun 2022, 08:15

Croatia (Zadar, Croatia)

48. Registration

14/06/2022, 08:15

7. Welcome!

Alexander Lenz (Siegen University), Blazenka Melic, Danny van Dyk (TU München)

14/06/2022, 08:50

14. Status of the Global Fits and Next Steps

Prof. Joaquim Matias (Universitat Autonoma de Barcelona and IFAE)

14/06/2022, 09:00

In this talk I will present the most updated status of the global fits to all b->sll data. An anatomy of the main observables involved will be discussed together with their theoretical aspects. The most relevant scenarios of New Physics will be presented showing the degeneracy we observe systematically in all these years. I will present a full understanding of the reason of this degeneracy of...

17. Improved Global Theory Analysis of b → sll data

Méril Reboud (TUM)

14/06/2022, 09:30

We parametrize nonlocal contributions in $b\to s\ell\ell$ transitions using a $z$-expansion fitted on theory inputs steaming from a light-cone operator product expansion and experimental measurements. This approach allows us to update the Standard Model predictions of experimental observables in the $B\to K\ell\ell$, $B \to K^*\ell\ell$ and $B_s\to\phi\ell\ell$, with a unprecedented control on...

9. Form factors for Semileptonic B(s) decays

Oliver Witzel (Universität Siegen)

14/06/2022, 10:00

Exclusive semileptonic $B_{(s)}$ decays are theoretically described by scalar and vector form factors. Combining experimental branching fraction measurements with theoretical form factor predictions, the CKM matrix elements $|V_{ub}|$ and $|V_{cb}|$ can be extracted. In addition $R$-ratios testing lepton flavor universality can be derived to directly compare standard model predictions to...

23. Asymmetric Leptoquark Pair Production @LHC

Ilja Doršner (University of Split)

14/06/2022, 11:30

I will introduce two novel mechanisms to produce pairs of leptoquarks at Large Hadron Collider and present several case studies to discuss the associated phenomenological implications.

8. $(g-2)_\mu$, B anomalies and DM: a loop model tale

Marco Fedele (KIT)

14/06/2022, 12:00

In this talk I will review how the anomalous magnetic moment of the muon and the B anomalies can be addressed by a combined explaination, by means of loop models characterized by minimal field content. Moreover, I will show how some of these model can also provide a viable DM candidate, accounting for the measured relic density while evading direct and indirect DM constraints.

22. The search for new physics in $B \to K \ell^+\ell^-$ and $B \to K \nu\bar{\nu}$ using precise lattice QCD form factors

William Parrott (University of Glasgow)

14/06/2022, 15:00

We present HPQCD's improved scalar, vector and tensor form factors for $B \to K$ decay using the Highly Improved Staggered Quark formalism for more accurate normalisation of the weak currents and working on very fine lattices to cover the full physical $q^2$ range. Our uncertainties at $q^2=0$ are a factor of three better than earlier work.

We compare Standard Model observables using our...

18. Recent Belle II results on electroweak and radiative penguins

Luka Santelj

14/06/2022, 15:30

Decays of B mesons that proceed through electroweak and radiative penguin amplitudes attract significant attention due to a number of observed discrepancies between the standard-model predictions and the results. Belle II is expected to perform measurements on channels closely related to those exhibiting anomalies and that are uniquely available to Belle II. These include b -> s(d) nu nubar...

46. Do the small numbers in V_CKM arise from New Physics?

Gustavo Branco

14/06/2022, 16:00

25. $B$-meson decay into a proton and dark antibaryon from QCD light-cone sum rules

Marcel Wald (University of Siegen)

14/06/2022, 17:00

The recently developed $B$-mesogenesis scenario predicts the decays of $B$ mesons into a baryon and a hypothetical dark antibaryon in the final state. In this work, we suggest to apply QCD light-cone sum rules to estimate the partial width of the simplest exclusive decay mode $B^+\to p \Psi$, where $\Psi$ is a dark antibaryon. We consider two sample models of $B$-mesogenesis and identify the...

44. Quirky results and prospects from LHCb

Johannes Albrecht (TU Dortmund), Johannes Albrecht (TU Dortmund)

14/06/2022, 17:30

45. TBD

Jernej F. Kamenik (Jozef Stefan Institute and University of Ljubljana), Jernej Kamenik (Jozef Stefan Institute and Ljubljana University)

14/06/2022, 18:00