Conveners
BSM aspects of Flavour and Neutrino Physics: Session 1
- Patrick Haworth Owen (Universitaet Zuerich (CH))
BSM aspects of Flavour and Neutrino Physics: Session 2
- Stefania Bordoni (CERN)
BSM aspects of Flavour and Neutrino Physics: Session 3
- Stefania Bordoni (CERN)
BSM aspects of Flavour and Neutrino Physics: Session 4
- Patrick Haworth Owen (Universitaet Zuerich (CH))
There have been recent excitement regarding certain B-decays both in the charged and neutral current sectors. In the charged sector, the measurement of $R_D$ and $R_{D^*}$ may point to the existence of Physics Beyond the Standard Model, and is thus worth discussing threadbare. Building on our earlier paper (JHEP 1701 (2017) 125), we carry out a comprehensive analysis of these anomalies in as...
Effective b->c cbar s operators affect a range of B meson processes, providing a rich phenomenological testing ground for studies of new physics. It is often assumed that such operators will not generate a sizeable BSM contribution, however a comprehensive model independent treatment implies that some observables are sensitive to new physics effects, motivating a phenomenological study of the...
The Belle II experiment is a substantial upgrade of the Belle detector and will operate at the SuperKEKB energy-asymmetric $e^+ e^-$ collider. The accelerator has already successfully completed the first phase of commissioning in 2016 and first electron positron collisions in Belle II are expected for April 2018. The design luminosity of SuperKEKB is $8 \times 10^{35}$ cm$^{-2}$s$^{-1}$ and...
Precision measurements of CP violating observables in b hadron decays
are powerful probes to search for physics effects beyond the Standard
Model. The most recent results on CP violation in the decay, mixing and
interference of b hadrons obtained by the LHCb Collaboration will be
presented, with particular focus on results obtained exploiting the data
collected during the Run 2 of LHC.
Rare decays are powerful probes for Physics beyond the Standard Model
(SM), as new particles can have a large impact on physics observables.
Recent results on lepton universality tests and measurements of
branching fractions and angular distributions of rare b->sll decays have
shown tensions with the SM predictions. The LHCb experiment is ideally
suited for the study of the these flavour...
Flavor symmetries à la Froggatt-Nielsen (FN) provide a compelling way to explain the hierarchies of fermionic masses and mixing angles in the Yukawa sector. In Supersymmetric (SUSY) extensions of the Standard Model where the mediation of SUSY breaking occurs at scales larger than the breaking of flavor, this symmetry must be respected not only by the Yukawas of the superpotential, but by the...
Supersymmetric theories supplemented by an underlying flavor-symmetry provide a rich playground formodel building aimed at explaining the flavor structure of the Standard Model. In the case where supersymmetry breaking is mediated by gravity, the soft-breaking Lagrangian typically exhibits large tree-level flavor violating effects, even if it stems from an ultraviolet flavor-conserving origin....
The decay K+→π+νν, with a very precisely predicted branching ratio of less than 10-10, is one of the best candidates to reveal indirect effects of new physics at the highest mass scales. The NA62 experiment at CERN SPS is designed to measure the branching ratio of the K+→π+νν with a decay-in-flight technique, novel for this channel. NA62 took data in 2016, 2017 and another year run is...
In the near future, fundamental interactions at high-energy scales may be most efficiently studied via precision measurements at low energies. In this talk I will discuss the possible impact of the DUNE neutrino experiment on constraining the Standard Model Effective Field Theory. The unprecedented neutrino flux offers an opportunity to greatly improve the current limits via precision...
We consider an extension of the Standard Model by right-handed neutrinos and we argue that, under plausible assumptions, a neutrino mass of O(0.1)eV is naturally generated by the breaking of the lepton number at the Planck scale, possibly by gravitational effects, without the necessity of introducing new mass scales in the model. Some implications of this framework are also briefly discussed.
Neutrino oscillation phenomenology requires an explanation for the origin of neutrino masses. Low-scale models, generally motivated by symmetry arguments, have been shown to be testeable at current and future colliders.
We consider the possibility of distinguishing the Pseudo-Dirac or Majorana nature of new heavy neutrinos at Electron-Positron colliders. We show that lepton number violating...
The Standard Model of particle physics have been extremely successful so far, but there are still many unanswered questions like the origin of neutrino mass, nature of dark matter, the source of quark and lepton flavor mixing and their possible correlation, the theory of grand unification of all SM interactions. In this talk I will focus on some interesting models that attempt to answer these...
The high-intensity setup, trigger system flexibility, and detector
performance -- high-frequency tracking of beam particles, redundant
PID, ultra-high-efficiency photon vetoes ― make NA62 particularly
suitable for searching new-physics effect from different
scenarios. Results from a search for invisible dark photons produced
from pi0 decays are given. Fixed target experiments are...
In the next decade, accelerator upgrades are expected in various facilities, making it feasible to have continuous muons beams with an intensity of $10^9$ or even $10^{10}$ muons per second. These progresses would open new prospects in the search for the Lepton Flavor Violating decay $\mu \to e \gamma$. We discuss the potential sensitivity to this decay for experiments exploiting continuous...
We revisit charged lepton flavor violating (CLFV) scattering processes $\ell_{i} N \to \tau X \, (\ell_{i} \ni e, \mu)$ mediated by Higgs. (Although in this talk we focus on Higgs CLFV, our results hold for other CLFV mediators which couple with gluon and/or heavy quarks.) We point out that a new subprocess $\ell_{i} g \to \tau g$ via the effective interactions of Higgs and gluon gives the...
We investigate the muon anomalous magnetic moment, the μ→eγ branching ratio and the μ→e conversion rate in the nuclei from the point of view of the planned μ→e conversion experiments.
In the MSSM these processes are strongly correlated through tanβ enhanced contributions. We demonstrate how in the Minimal R-symmetric Supersymmetric Standard Model the μ→eγ branching ratio and the μ→e...
LHCb has collected the world's largest sample of charmed hadrons. This sample is used to measure $D^0- \bar D^0$ mixing and to search for direct and indirect CP violation. New measurements from several decay modes are presented.
We report on multiple recent searches for supersymmetric, LFV/LNV, and other BSM effects with data collected by the BaBar experiment at the PEP-II e+e- collider. Using the entire BaBar dataset, we report the results of searches for: 1) the rare decay D0 -> Kpie+e-, and generic LFV/LNV D -> hh'll' decays; 2) Y(3S) -> e+mu- decays; and 3) beyond-SM T- and CP-violating effects in neutral B...
