The decay process represented by b → πlν describes the transition of a bottom quark (b) into a pion (π), a lepton (l), and a neutrino (ν). This process is significant in B-physics, as it highlights flavor-changing processes that involve weak interactions, playing a crucial role in understanding particle decays and the behavior of different flavors of quarks.
congrats on reading the definition of b → πlν. now let's actually learn it.