Conveners
Afternoon Session
- Marc Sher
Afternoon Session
- Mariam Tórtola
Afternoon Session
- Blazenka Melic
Afternoon Session
- Svjetlana Fajfer
Afternoon Session
- Jose Valle
We provide an extensive study of the lifetimes of singly charmed baryons and
mesons, within the heavy quark expansion with all known corrections included.
We give our predictions for lifetimes, lifetime ratios, and semileptonic branching ratios of singly charmed baryons. Our results accommodate the experimentally-favoured hierarchy of singly charmed baryon lifetimes
τ (Ξ0c)< τ (Λ+c) < τ...
B0 B0\bar entanglement offers a conceptual alternative to the single charged B-decay asymmetry for the measurement of the direct CP violating
gamma phase. With f =J/PsiK_L; J/PsiK_S and g =(PiPi)0; (Rho_LRho_L)0 the 16 time-ordered double decay rate Intensities to (f; g) depend on the relative phase between the the f- and g-decay amplitudes given by gamma at tree-level. Several constraining...
Elusive signals of new particles may well be hidden in LHC data. Because the mass of the new particles is unknown, as well as the specific characteristics of the signals, anomaly detection methods are quite valuable to bring these signals to light.
I will briefly review the current status of the anomaly in the lepton flavour universality ratios R(D(*)). Subsequently I will discuss ooportunities to probe the underlying New Physics with targeted LHC searches.
A minimal extension of the Standard Model (SM) featuring two scalar leptoquarks, an SU(2) doublet with hypercharge 1/6 and a singlet with hypercharge 1/3, is proposed as an economical benchmark model for studies of an interplay between flavour physics anomalies and properties of the neutrino sector. The presence of such type of leptoquarks radiatively generates neutrino masses and offers a...
Low-energy flavour symmetries could contribute to the observed muon anomalous magnetic moment discrepancy. However, the stringent experimental bound on $\mu \to e\gamma$ is compatible with a simultaneous and sizable new physics contribution to the muon only if we assume a mostly (quasi)diagonal texture for models with a low flavor breaking scale. We propose a mechanism in which the realization...
We study exotic Higgs decays $h \to Z X$, with $X$ an invisible BSM particle, resulting in a semi-dark final state. Such exotic Higgs decays may occur in theories of axion-like-particles (ALPs), dark photons or pseudoscalar mediators between the SM and dark matter. The SM process $h\to Z\nu\bar{\nu}$ represents an irreducible ``Higgs neutrino floor'' background to these new physics searches,...
The talk will be about CP violation but also about axion shift-invariance breaking. In both cases, Jarlskog-like flavour invariants capture collective breaking effects and allow one to define parameters orders that measure the amount of symmetry breaking and that could be used to define a self-consistent power counting closed under the renormalisation group evolution.
Colliders and flavour facilities provide complementary information on fermion-Higgs couplings. Within the SMEFT approach, bounds on the new physics scale affecting the Yukawa couplings are obtained assuming the presence of a flavour symmetry. Limits on the diagonal couplings arise from Higgs boson production and decays at the LHC experiments, while bounds on non-diagonal couplings from a...
The talk will discuss the role of flavor symmetries in defining the structure of the Standard Model Effective Field Theory and it will give an overview of their implications for searches of indirect new physics signals at the LHC.
In this talk I will describe a theory where the Inverse seesaw mechanism is implemented not only in the neutrino sector but also in the SM charged fermion sector in order to explain the pattern of SM fermion masses. To the best of my knowledge, that model corresponds to the first implementation of the inverse seesaw mechanism for the charged fermion sector. I will discuss its implications in...
We discuss rare kaon and B meson decays with final state neutrino pairs in the context of non-standard neutrino interactions that add incoherently to standard model rates. We use existing experimental limits to constrain neutrino lepton flavour violation, neutrino lepton number violation, and additional light neutrino species contributions to these modes.
