Name: Flavor at the Crossroads
Start: 2022-04-19T09:00:00+02:00
End: 2022-04-29T17:30:00+02:00
Location: Mainz Institute for Theoretical Physics, Johannes Gutenberg University

Flavor at the Crossroads

from Tuesday, April 19, 2022 (9:00 AM) to Friday, April 29, 2022 (5:30 PM)

Monday, April 18, 2022
Tuesday, April 19, 2022
9:00 AM Latest results and prospects from LHCb - Paula Alvarez Cartelle (University of Cambridge)
Latest results and prospects from LHCb
- Paula Alvarez Cartelle (University of Cambridge)
9:00 AM - 10:00 AM
Room: 02.430
10:00 AM Latest results and prospects from Belle II - Gagan Mohanty (Tata Institute of Fundamental Research)
Latest results and prospects from Belle II
- Gagan Mohanty (Tata Institute of Fundamental Research)
10:00 AM - 11:00 AM
Room: 02.430
11:00 AM Coffee break
Coffee break
11:00 AM - 11:30 AM
Room: 02.430
11:30 AM b->sll fits overview - Marco Fedele (KIT)
b->sll fits overview
- Marco Fedele (KIT)
11:30 AM - 12:30 PM
Room: 02.430
1:00 PM Lunch break
Lunch break
1:00 PM - 2:00 PM
Room: 02.430
3:00 PM Looking for a Muonic Force in the Muon Anomalies - Anders Eller Thomsen (University of Bern)
Looking for a Muonic Force in the Muon Anomalies
- Anders Eller Thomsen (University of Bern)
3:00 PM - 4:00 PM
Room: 02.430 Significant deviations from SM predictions have been observed in $ b \to s \mu^+ \mu^-$ decays and in the muon (g-2). Scalar leptoquark extensions of the SM are known to be able to address these anomalies, but generically give rise to lepton flavor violation or even proton decay. A possible resolution is to introduce a lepton-flavored U(1) gauge symmetry to preserve the accidental symmetries of the SM. I will discuss various approaches to addressing the anomalies in this framework, with a particular focus on constraining the light gauge boson solution to the g-2. I will also touch on a surprisingly strong protection mechanism preventing proton decay in the presence of a lepton-flavored symmetry
4:00 PM Coffee break
Coffee break
4:00 PM - 4:30 PM
Room: 02.430
4:30 PM High-pT searches for flavor - Ulrich Haisch (Max Planck Institute, Munich)
High-pT searches for flavor
- Ulrich Haisch (Max Planck Institute, Munich)
4:30 PM - 5:30 PM
Room: 02.430
Wednesday, April 20, 2022
10:00 AM LHCb and electrons - Martino Borsato (Heidelberg University)
LHCb and electrons
- Martino Borsato (Heidelberg University)
10:00 AM - 11:00 AM
Room: 02.430
11:00 AM Coffee break
Coffee break
11:00 AM - 11:30 AM
Room: 02.430

1:00 PM Lunch break
Lunch break
1:00 PM - 2:00 PM
Room: 02.430
4:00 PM ALPs and flavor - Adrián Carmona (Universidad de Granada)
ALPs and flavor
- Adrián Carmona (Universidad de Granada)
4:00 PM - 5:00 PM
Room: 02.430
5:00 PM Coffee break
Coffee break
5:00 PM - 5:30 PM
Room: 02.430
Thursday, April 21, 2022
10:00 AM Novel CP phases in B-physics anomalies - Nejc Kosnik (Jozef Stefan Institute)
Novel CP phases in B-physics anomalies
- Nejc Kosnik (Jozef Stefan Institute)
10:00 AM - 11:00 AM
Room: 02.430 I will discuss how the novel CP-phases, potentially present in New physics solutions to observed LFU ratios in b-hadron decays, could be revealed. For R_K(*) I will argue that a novel CP phase in NP amplitudes of b -> s mu mu could be observed either in mixing-induced asymmetries or in direct CP-asymmetries which are enhanced by narrow charmonium resonances. The correlation with constraints from meson mixing will be discussed in concrete models. In charged current amplitudes from NP that explain R_D^{*} I will show that some leptoquark scenarios require large novel CP phase. I will present possibilities to constrain such CP phases in direct collider searches.
11:00 AM Coffee break
Coffee break
11:00 AM - 11:30 AM
Room: 02.430

1:00 PM Lunch break
Lunch break
1:00 PM - 2:00 PM
Room: 02.430
4:00 PM Electron and Muon g-2 in a LFUV 2HDM - Fernando Cornet Gómez (IFIC, CSIC-Universidad de Valencia)
Electron and Muon g-2 in a LFUV 2HDM
- Fernando Cornet Gómez (IFIC, CSIC-Universidad de Valencia)
4:00 PM - 4:30 PM
Room: 02.430 In the wake of the recent determinations of the electron and muon anomalous magnetic moments, a lot of attention has been drawn to these observables. There are as well other observables that point to the possibility of having lepton flavor universality violation. Here we present a scalar extension of the SM with a second Higgs doublet that containing non-universal Yukawa coupling to leptons, it is capable of explaining the different signed (g-2) anomalies for the electron and muon. It also offers an explanation for the small bump in the ditau channel at 400GeV observed by ATLAS.
4:30 PM Automatic one-loop matching for flavour phenomenology - Pablo Olgoso (Universidad de Granada)
Automatic one-loop matching for flavour phenomenology
- Pablo Olgoso (Universidad de Granada)
4:30 PM - 5:00 PM
Room: 02.430 Comparing the low energy phenomenology of flavour models can be a hard task, especially if one-loop running and matching are taken into account. In this talk, I will briefly review the use of Matchmakereft, an automated tool to compute matching and RGEs of general models into general EFTs, and how it can be used for the study of models addressing flavour anomalies. In particular, I will show an example on how a three field extension of the SM (for which there are no full one-loop matching examples in the literature) can open up new ways of explaining the anomalous magnetic moment of the muon, while accommodating some other flavour anomalies.
5:00 PM Coffee break
Coffee break
5:00 PM - 5:30 PM
Room: 02.430
Friday, April 22, 2022
10:00 AM New strategies for the full reconstruction of rare semi-invisible B decays - Diego Guadagnoli (Annecy, LAPTH)
New strategies for the full reconstruction of rare semi-invisible B decays
- Diego Guadagnoli (Annecy, LAPTH)
10:00 AM - 11:00 AM
Room: 02.430 Kinematic variables designed for pairwise decays to partly undetected final states---the mother of which variables is perhaps the Cambridge M_{(T)2}---have been extensively used in high-p_T collider searches, in particular of supersymmetry. A new range of potential applications at flavour facilities was recently pointed out in 2106.16236. We discuss two novel constraints that can be imposed on M_2. We apply them to the benchmark search B -> K tau mu at Belle II. We show that the strategy allows to fully close the kinematics in semi-leptonic tag events, making them as efficient as hadronic tag ones, and effectively doubling the statistics.
11:00 AM Coffee break
Coffee break
11:00 AM - 11:30 AM
Room: 02.430

1:00 PM Lunch break
Lunch break
1:00 PM - 2:00 PM
Room: 02.430
4:00 PM Semileptonic transitions at high-pT - Wilsch Felix (University of Zurich)
Semileptonic transitions at high-pT
- Wilsch Felix (University of Zurich)
4:00 PM - 5:00 PM
Room: 02.430 High-pT tail observables at the LHC offer a complementary probe to low-energy experiments for studying the flavor structure of the Standard Model and beyond. We discuss the neutral and charged current Drell-Yan processes contributing to these high-pT tails to probe New Physics (NP) effects in semileptonic transitions. For this purpose, we describe the relevant cross-sections in terms of general form-factors, which are matched to the Standard Model Effective Field Theory (SMEFT) or to the coupling constants of tree-level mediators present in concrete NP models. By using the latest run-2 data from LHC on the relevant mono-lepton and di-lepton production channels, we derive constraints on the SMEFT Lagrangian by using a consistent expansion of the observables in the NP scale $\Lambda$ up to order $\mathcal{O}(\Lambda^{-4})$. We also compare these results with the truncation at order $\mathcal{O}(\Lambda^{-2})$ or when considering only dimension six operators. Furthermore, we present the Mathematica package “HighPT”, which provides a simple way to compute the relevant high-pT tail observables and to extract the complete LHC likelihood for semileptonic effective operators or NP coupling constants. To illustrate the relevance of these results, we revisit the leptoquark explanations of the charged-current B-physics anomalies, by exploring the complementarity of our high-pT constraints with the relevant low-energy observables.
5:00 PM Coffee break
Coffee break
5:00 PM - 5:30 PM
Room: 02.430

8:00 PM Conference dinner
Conference dinner
8:00 PM - 10:00 PM
Room: 02.430
Saturday, April 23, 2022

12:00 PM Treetop Climbing Forest Neroberg
Treetop Climbing Forest Neroberg
12:00 PM - 4:30 PM
Room: 02.430
Sunday, April 24, 2022