Research Group on Effective Theories in Hadronic and Nuclear Physics

Description

Using effective field theories, constructed from symmetries of the fundamental interactions, and many-body quantum physics techniques, we study a broad spectrum of problems concerning the properties and interactions of light and heavy hadrons in vacuum and dense media, the dynamical generation of resonances and exotic states, nuclear response functions, and neutrino interactions with matter. Special emphasis is given to the scientific programme of the European FAIR laboratory (PANDA and CBM experiments), the LHCb experiment and the needs and opportunities offered by the neutrino physics experimental programme (T2K experiments, SBN programme, MINERvA, DUNE).

Goals CT

To better understand the dynamics of meson-meson and meson-baryon systems; dynamically generated resonances and triangular singularities.
Study the interactions of mesons with b and c quarks leading to the formation of B, B, D, D, D and other exotic meson molecular states. Assessing the role of heavy quark spin and flavour symmetries. Spectroscopy of X, Y and Z states.
Description of meson-baryon systems in the heavy quark sector such as the Omega_c and pentaquarks discovered at LHCb.
Investigation of the strong, weak and radiative decays of heavy hadrons to explore the nature of hadronic resonances and symmetry violations.
Study of effective theories in finite volumes which, in conjunction with QCD results in the lattice, reveal new details about QCD in the non-perturbative regime.
Description of electroweak interactions in the nucleon using chiral perturbation theory.
Determination of baryon axial form factors from QCD data and results in the lattice using chiral perturbation theory and machine learning techniques.
Modelling of two-nucleon a la mechanisms and their impact on the neutrino energy reconstruction and on the polarisation of tau leptons emitted in neutrino scattering by nuclei.
Theoretical description of meson production with neutrino beams from accelerators.
Study of (anti)neutrino-induced hyperon emission, exploring the sensitivity of the cross-section and polarisation of hyperons to non-standard interactions.
Critical investigation of new physics mechanisms proposed to explain the MiniBooNE anomaly from interactions and their impact on the future Fermilab programme.
Modelling of the coherent emission of mesons and photons induced by neutrinos in Fermilab's MINERvA and SBN experiments.

Research lines

Nuclear structure. Quantum liquids
Study of homogeneous nuclear matter with density-dependent effective interactions. Quantum clustering of fluids, mainly hydrogen and molecular helium by means of effective density functionals and Monte Carlo simulations.
Hadronic interactions with effective theories based on QCD symmetries
This line studies the interactions between hadrons and between hadrons and the nuclear medium, using effective theories, constructed from QCD symmetries, perturbative and non-perturbative methods. Special emphasis is given to topics related to the scientific programme of the FAIR laboratory.
Nonlinear Dynamics and Complex Systems
Dynamical evolution of classical and quantum systems, whose complexity does not allow precise knowledge of their evolution equations. Magnus developments and related perturbative expansions. Study of neutrino-nucleus cross sections used in neutrino oscillation experiments (MiniBooNE, T2K....).
Secciones eficaces neutrino-núcleo de relevancia en los experimentos de oscilaciones de neutrinos
Study of nuclear responses to weak probes of intermediate energies: quasi-elastic peak region and the D(1232) resonance.

Management