Light quark and hadron properties from lattice QCD at the physical point
by
Prof.Laurent Lellouch(Centre de Physique Theorique, CNRS Luminy, Marseille)
→
Europe/Rome
1B (Roma Tre (Facolta' di Scienze))
1B
Roma Tre (Facolta' di Scienze)
via Corrado Segre 4/6
Description
In the nonperturbative low-energy regime of QCD, the only known way to
make predictions from the fundamental Lagrangian without additional
assumptions, is to define the theory on a finite spacetime lattice and
to calculate observables numerically. This approach, known as lattice
QCD, has undergone tremendous progress in the last years. After an
introduction to the current situation, I will present results for the
light quark masses as well as for the neutral kaon mixing parameter,
B_K, relevant for indirect CP violation in kaon decays to two
pions. These results are obtained from calculations which are
performed all the way down to the physical value of the pion mass, and
even below. Thanks to this unique set of simulations, the
uncertainties are small and fully controlled.
