Open Questions and Future Directions in Flavour Physics

4 Nov 2024, 09:00 → 15 Nov 2024, 16:30 Europe/Berlin

2413/2-430 - MITP Seminar Room (MITP - Mainz Institute for Theoretical Physics, Johannes Gutenberg University Mainz)

By the end of 2024, Run 3 of the LHC will be nearing its end, while the physics programme of Belle II will be well underway. The absence of clear signs of new physics (NP) emerging from high $p_T$ data motivates the belief that the latter is either much heavier than the electroweak scale or very light and weakly coupled to the Standard Model (SM). In turn,  this suggests that an observation of NP in the near future, if any, is more likely to occur via indirect searches. Indeed, we may already be seeing hints of physics beyond the SM (BSM) in flavour observables based on the exclusive $b\to s\mu \mu$ and $b\to c\ell \nu$ transitions: while LHCb recently announced the disappearance of the $R_K$ anomaly, several other deviations persist, most notably $R_{D^{(\ast )}}$.

In the coming year, substantial experimental progress is expected on this front: most Run 2 results by LHCb should be available, along with several Belle II initial results and the long-awaited CMS results in $B$-physics. We, therefore, believe that 2024 is a good time to critically reflect on the status of flavour physics. In this scientific program, we aim at bringing together theorists and experimentalists working on flavour physics in order to discuss newly available data and their implications for physics in the SM and beyond. 
On top of identifying which SM prediction should be improved and how to match current experimental precision, we plan to discuss possible NP directions (motivated by experiments and/or long-standing open questions) that could be probed using the newly available flavour data, with particular focus on the interplay between high- and low-energy searches. Ultimately, the goal is to identify concrete directions that the experimental and theoretical community could follow to make meaningful progress in the quest for NP.

OFP2024_Participants_Indico.pdf

Monday 4 November ¶

10:45 → 12:30 Monday 04/11 - morning¶

10:45 Coffee break

11:15 Welcome¶

Speaker: Marzia Bordone (CERN)

talk.pdf

11:30 Exploring the Vub: Selected Insights and Perspectives¶

Speaker: Blazenka Melic (Boskovic Inst., Zagreb)

12:30 → 13:50 Lunch

13:50 → 16:30 Monday 04/11 - afternoon¶

13:50 Welcome from MITP director¶

14:00 b → sνν decays: why, where and how?¶

Speaker: Méril Reboud (IJCLab, Orsay)

Reboud_041124.pdf

15:00 Coffee break

15:30 Experimental aspects of the b→sνν¯ measurements at Belle II¶

Speaker: Slavomira Stefkova (Bonn U.)

Tuesday 5 November ¶

10:00 → 12:30 Tuesday 05/11 - morning¶

10:00 Heavy "bread-and-butter" lattice calculation¶

Speaker: J. Tobias Tsang (CERN)

11:00 Coffee break

11:30 Bs→μ+μ−γ in the Standard Model and beyond¶

Speaker: Ludovico Vittorio (Annecy, LAPTH)

12:30 → 14:00 Lunch

14:00 → 16:30 Tuesday 05/11 - afternoon¶

14:00 Heavy hadron decays: from beauty to charm¶

Weak decays of heavy hadrons provide an excellent way to test the flavour and QCD structure of the SM. In this talk, I will present recent results and ongoing work on the study of both inclusive and exclusive decays, in both the beauty and charm sectors. Specifically, I will start by discussing the current status of the heavy quark expansion (HQE) and its application to the study of heavy hadron lifetimes. Then, I will describe the analysis of non-leptonic two body $B$- and $D$-meson decays using the framework of light-cone sum rules (LCSR), in light of the observed tensions in channels like $B^0\to D^{+}{K}^{-}$, and of the recent discovery of CP violation in the charm sector.

Speaker: Maria Laura Piscopo (Siegen U.)

15:00 Coffee break

15:30 QED × QCD Factorization in B¯→DL¶

Speaker: Gael Finauri (Turin U.)

Wednesday 6 November ¶

10:00 → 12:30 Wednesday 06/11 - morning¶

11:00 Coffee break

11:30 Flavor Hierarchies from Minimal U(2) Symmetries¶

Speaker: Anders Thomsen (U. Bern, AEC)

MITP_2024.pdf

12:30 → 14:00 Lunch

14:00 → 16:30 Wednesday 06/11 - afternoon¶

14:00 The flavor landscape in the SILH¶

Speaker: Luca Vecchi (University of Padova)

15:00 Coffee break

15:30 New Physics Through Flavor Tagging at FCC-ee¶

Speaker: Admir Greljo (Basel U.)

Talk-Mainz.pdf

Thursday 7 November ¶

10:00 → 12:30 Thursday 07/11 - morning¶

10:00 Recent theory results on bsll¶

Speaker: Arianna Tinari (University of Zürich)

talk_mitp_tinari.pdf

11:00 Coffee break

11:30 What else we can learn from data and theory or combinations of them to better understand the SM predictions and assess possible new physics effects¶

Speakers: Andrea Mauri (Imperial College), Danny van Dyk (Durham University)

12:30 → 14:00 Lunch

14:00 → 16:30 Thursday 07/11 - afternoon¶

14:00 Flavour physics results at CMS¶

Speaker: Riccardo Manzoni (ETH)

15:00 Coffee break

15:30 Discussion session¶

Speakers: Bernat Capdevila (Barcelona, Autonoma University), Mauro Valli (INFN, Rome)

19:00 → 21:00 Dinner

Friday 8 November ¶

10:00 → 12:30 Firday 08/11 - morning¶

10:00 3 body kaon decays to probe new physics¶

Speaker: Diego Guadagnoli (Annecy, LAPTH)

11:00 Coffee break

11:30 Kaon decays: experimental overview and prospects¶

Speaker: Cristina Lazzeroni (Birmingham U.)

Unknown-8.pdf

12:30 → 14:00 Lunch

14:00 → 15:30 Friday 08/11 - afternoon¶

14:00 Baryons opportunities at LHCb¶

Speaker: Anna Lupato (University of Bergamo and INFN, Padova)

15:00 Coffee break

Monday 11 November ¶

10:45 → 12:30 Monday 11/11 - morning¶

10:45 Coffee break

11:15 Welcome¶

11:30 The role of flavour for global SMEFT fits¶

Speaker: Anke Biekötter (Mainz University)

12:30 → 14:00 Lunch

14:00 → 16:30 Monday 11/11 - afternoon¶

14:00 A Journey Through Flavour Symmetries in the SMEFT¶

Speaker: Ajdin Palavrić (Basel University)

15:00 Coffee break

15:30 Flavourful new physics from B to Z¶

Speaker: Sophie Renner (Glasgow University)

Tuesday 12 November ¶

10:00 → 12:30 Tuesday 12/11 - morning¶

10:00 Semi-leptonics at Belle II¶

Speaker: Markus Prim (U. Bonn, Phys. Inst., BCTP)

11:00 Coffee break

11:30 B to K* form factors¶

Speaker: Felix Erben (CERN)

12:30 → 14:00 Lunch

14:00 → 16:30 Tuesday 12/11 - afternoon¶

14:00 The muon anomalous magnetic moment¶

Speaker: Simon Kuberski (CERN)

24mitp_kuberski.pdf

15:00 Coffee break

15:30 Flavour Physics Beyond the Standard Model with the SMEFT Likelihood¶

Speaker: Peter Stangl (CERN)

Wednesday 13 November ¶

10:00 → 12:30 Wednesday 13/11 - morning¶

10:00 Interplay between flavour and high energy: theory¶

Speaker: Dr Lukas Allwicher (DESY)

11:00 Coffee break

11:30 Interplay between flavour and high energy measurements at colliders¶

Speaker: Tamara Vazquez Schroeder

VazquezSchroeder_mitp.pdf

12:30 → 14:00 Lunch

14:00 → 16:30 Wednesday 13/11 - afternoon¶

14:00 Flavour Deconstructing the Composite Higgs¶

Speaker: Marko Pesut (University of Zürich)

Pesut_Mainz.pdf

15:00 Coffee break

15:30 B to D(*) form factors on the lattice¶

Speaker: Judd Harrison (Glasgow U.)

Thursday 14 November ¶

10:00 → 12:30 Thursday 13/11¶

10:00 Vcs from charm decays¶

Speaker: K. Keri Vos (Maastricht University)

11:00 Coffee break

11:30 Open Questions in Inclusive B Decays¶

Speaker: Matteo Fael (CERN)

OFP2024_Fael.pdf

12:30 → 14:00 Lunch

14:00 → 16:30 Thursday 14/11¶

14:00 Flavour Deconstruction¶

Speaker: Javier Lizana (Madrid, IFT)

15:00 Coffee break

15:30 Discussion session¶

Speakers: Benjamin C. Allanach (Cambridge U., DAMTP), Gino Isidori (University of Zürich)

19:30 → 22:30 Eisgrub

Friday 15 November ¶

10:00 → 12:30 Friday 14/11 - morning¶

10:00 Phenomenological aspects of modular symmetry¶

Speaker: Kei Yamamoto (Hiroshima Inst. Tech.)

Mainz2024_Yamamoto.pdf

11:00 Coffee break

11:30 Charged lepton flavour violation¶

Speaker: Sacha Davidson (U. Montpellier 2, LUPM)

12:30 → 14:00 Lunch

14:00 → 16:30 Friday 14/11 - afternoon¶

14:00 ALPs and Flavour Phenomenology¶

Speaker: Marvin Schnubel (Brookhaven Natl. Lab.)

FlavourphenoOfALPs.pptx

15:00 Coffee break