Introduction to the workshop Room: 02.430

BSM interpretations of R(D(*)

• Diptimoy Ghosh

Room: 02.430

LFU tests in the angular observables of $B \to D^{*} \ell \nu$

• Marco Fedele

Room: 02.430 In this talk, I will review a new set of observables sensitive to LFU violation, whose measurements - together with the ones of R(D) and R(D*) - would be extremely of help to understand whether there is indeed presence of NP in $b \to c$ transitions, and moreover to discriminate the shape of it.

Status of LFU tests in B-meson decays from LHCb

• Beatriz García Plana

Room: 02.430

Model Independent bounds on SMEFT from flavour physics

• Mauro Valli

Room: 02.430

New perspectives in BSM flavour physics

• Javi Serra

Room: 02.430

LFV B-decays @ Belle-II

• Alexander Glazov

Room: 02.430

Tau decays @ Belle-II

• Xing-Yu Zhou

Room: 02.430

The vector leptoquark saga: from EFT to UV

• Claudia Cornella

Room: 02.430 The vector leptoquark has been shown to be one of the most successful candidates for the combined explanation of B-anomalies. In this talk I will present the high- and low-energy phenomenology of a vector leptoquark coupled to left- and right-handed SM fields, emphasising the differences with respect to the solution involving left-handed couplings only. I will then discuss the general structure and the phenomenology of the Pati Salam Cubed model, which provides a possibile UV completion to this setup.

Explaining B-anomalies by loop effects

• Federico Mescia

Room: 02.430

B-decays with missing energy @ Belle-II

• Lu Cao

Room: 02.430

New Physics in b → c τ ν: Impact of Polarisation Observables and B_c → τ ν

• Monika Blanke

Room: 02.430 In this talk I review the status of new physics in b→cτν transitions in the EFT framework of dimension-six operators. The fit results, including the recent measurement of FL(D*), are presented for all one- and two-dimensional scenarios resulting from the tree level exchange of a single new particle. Particular emphasis is put on the constraint from the Bc→τν decay rate. I introduce a sum rule for the branching ratios of B→Dτν, B→D*τν and Λb→Λc τν which holds for any NP contribution to the Wilson coefficients and predicts an enhancement of the latter decay w.r.t. the Standard Model. I also discuss correlations between the polarisation observables in B→Dτν, B→D*τν and their model-discriminating prospects. The talk is based on the results published in https://arxiv.org/abs/1811.09603.

Matrix elements for exclusive b→clν processes

• Marzia Bordone

Room: 02.430

Dark sector and ALPs @ Belle-II

• Giacomo De Pietro

Room: 02.430

New axion searches at flavour factories

• Filippo Sala

Room: 02.430 New particles in the ~ 1-100 GeV range that couple to gluons and photons are well motivated by frameworks addressing both the hierarchy problem and Dark Matter (e.g. the SUSY R-axion) and by "heavy axion" solutions to the strong CP problem. After reviewing these motivations, I will discuss how vast regions of parameter space are left unexplored by current collider searches. I will then propose a program of new searches for these particles, with particular emphasis on LHCb and Belle-II.