Skip to main content

Closing in on New Physics in light-quark flavour transitions: from tau decays to the LHC

Objective

This action studies the synergy of the Energy and the Intensity Frontiers, with the focus on non-standard effects involving leptons and light quarks. The project starts with an unprecedented Effective-Field-Theory (EFT) analysis of hadronic tau decays including non-standard effects. Their discovery potential and complementarity with direct LHC searches will be assessed in a model-independent approach. The results will be combined with d(s)→u l nu (l=e,mu) transitions and eq → eq (q=u,d,s) processes in a comprehensive EFT flavour fit that will close in on New Physics involving leptons and light quarks.

The obtained model-independent results will be particularised to specific New Physics scenarios that are of phenomenological or theoretical interest. Special attention will be paid to symmetries, symmetry-breaking patterns and classes of models with well-defined power-counting schemes. The emerging correlations between the studied observables will be analysed in detail. Finally, the EFT matching to a general Leptoquark parametrisation will be carried out, along with a phenomenological analysis. The implications for specific models proposed in the recent literature to accommodate various Standard Model tensions will be studied.

Coordinator

ORGANISATION EUROPEENNE POUR LA RECHERCHE NUCLEAIRE
Net EU contribution
€ 187 419,60
Address
Esplanade Des Particules 1 Parcelle 11482 De Meyrin Batiment Cadastral 1046
1211 Geneve 23
Switzerland

See on map

Region
Schweiz/Suisse/Svizzera Région lémanique Genève
Activity type
Research Organisations
Non-EU contribution
€ 0,00