Webinar: The QCD axion, precisely

por Giovanni Villadoro (ICTP, Trieste)

martes 19 ene. 2016 15:00 → 16:00 Europe/Madrid

retransmitted from Seminar Room, 1.1.1 (IFIC)

The QCD axion is probably the most robust solution to the strong CP problem and a natural dark matter candidate. While its properties, such as the mass and the couplings, are mostly determined by non-perturbative QCD effects I will present recent computations demonstrating that they can be safely extracted with percent accuracy, which is important for the theory interpretation of experimental results. I will also present some recent lattice QCD results highlighting a large departure from the usual instanton estimates and changing substantially the prediction for the axion relic abundance.