Speaker
Marco Bonvini
Description
I present a new determination of parton distribution functions (PDFs) which
includes the resummation of large logarithms at small momentum fraction x,
relevant at high energies. The description of the HERA data at small x,
small Q improves considerably. The new PDFs, obtained from a global fit,
exhibit smaller uncertainty at small x, and differ significantly to their
fixed-order counterparts in this region. These results demonstrate how the
exploration of novel dynamical regimes of QCD, in this case the BFKL regime,
represents a fundamental ingredient of the physics program of future
high-luminosity and high-energy colliders.
