1º Encontro Nacional da Associação de Física de Interacções Fortes

Universidade de Coimbra

Universidade de Coimbra

Sala de Conferências (sala F42 no 3º andar) Departamento de Física Faculdade de Ciências e Tecnologia Universidade de Coimbra Rua Larga P-3004 516 Coimbra
Joao Moreira (Universidade de Coimbra) , Joao Seixas (IST/LIP)

  • Alex Blin
  • Antonio Amorim
  • Brigitte Hiller
  • George Rupp
  • Helena Santos
  • Joao Moreira
  • Joao Seixas
  • Jorge Morais
  • José Emílio FT Ribeiro
  • Márcio Ferreira
  • Nuno Leonardo
  • Orlando Oliveira
  • Paulo Silva
  • Pedro Bicudo
  • Pedro Costa
  • Renan Pereira
    • 1
    • 2
      Spin 0 and spin 1 low-lying meson spectra within a chiral model with explicit symmetry breaking effects.

      An NJL-type three-flavor quark model with a complete set of explicit chiral symmetry breaking terms is extended to accommodate spin 1 mesons upon bosonization. The bosonized Lagrangian is analyzed up to quadratic order in the
      meson fields. Analytic relations between spin 0 and spin 1 meson masses are obtained. The vector mesons are shown to play a major role in the model's predictions for the constituent quark masses. Finally, it is shown that the parameters can be adjusted to accurately reproduce the four low-lying meson nonets.

      Speaker: Jorge Morais (FCTUC / CFisUC)
    • 3
      Magnetized QCD phase diagram

      The effects of external magnetic fields on the phase diagram structure of QCD are studied. We use NJL-type models to investigate the impact of magnetic fields on both chiral and
      deconfinement phase transitions. We focus on possible consequences of the Inverse Magnetic Catalysis effect on Critical-End-Point (CEP).

      Speaker: Márcio Ferreira (CFisUC)
    • 4
      Hot gluons on the lattice: how do gluons propagate in a hot and non-dense medium?

      The gluon propagator at finite temperature is investigated via
      lattice simulations focusing on the volume and lattice spacing
      dependence and its interpretation as a massive-type bosonic propagator. Moreover, we compute the corresponding spectral density and study the violation of spectral positivity. Finally, we explore the dependence of the gluon propagator on the phase of the Polyakov loop.

      Speaker: Paulo Silva (CFisUC)
    • 12:30 PM

      Almoço no Restaurante Loggia no Museu Nacional Machado de Castro

    • 5
      Gluon and Ghost Dynamics from Lattice QCD

      The two point gluon and ghost correlation functions and the three gluon vertex are investigated, in the Landau gauge, using lattice simulations. For the two point function, we discuss the approach to the continuum limit looking at the lattice spacing and volume dependences. The analytical structure of the propagators is also investigated by computing the corresponding spectral functions using an implementation of the Thikonov regularisation to solve the integral equation. For the three point function we report results when the momentum of one of the gluon lines is set to zero and discuss its implications

      Speaker: Orlando Oliveira (CFisUC)
    • 6
      Hadron production and suppression in hadron collisions

      The LHC provides unique datasets gathered by colliding different hadron species at different energies. These rich data are explored towards shedding light on the QCD mechanisms of hadroproduction and suppression. We present a selection of related measurements performed in the heavy flavour sector.

      Speaker: Nuno Leonardo (LIP)
    • 7
      Tetraquark resonances computed with static lattice QCD potentials and scattering theory

      We study tetraquark resonances with lattice QCD potentials computed for two static quarks and two dynamical quarks, the Born-Oppenheimer approximation and the emergent wave method of scattering theory. As a proof of concept we focus on systems with isospin I = 0, but consider different relative angular momenta l of the heavy b quarks. We compute
      the phase shifts and search for S and T matrix poles in the second Riemann sheet. We predict a new tetraquark resonance for l =1, decaying into two B mesons, with quantum numbers I(JP) = 0(1-), mass m= 10576 (+4 -4) MeV and decay width Gamma = 112 (+90 -103) MeV.

      Speaker: Pedro Bicudo (IST Lisboa)
    • 3:30 PM
      Pausa para café
    • 8
      Mesa redonda: Futuro e oportunidades das interacçoes fortes.

      Grupo de discussão moderado por Brigitte Hiller (CFisUC) e Pedro Bicudo (IST)