【素粒子物理】CERNの物理学者によるパイオン分極率の測定
Scientists from CERN’s COMPASS collaboration have made the most precise measurement ever of the
polarizability of pion – the fundamental low-energy parameter of strong interaction.
An electron (green) hits a proton in a nucleus, creating a pion (green-skinned particle) and
transforming the proton into a neutron. Image credit: Joanna Griffin / Jefferson Lab
Everything we see in the Universe is made up of fundamental particles called quarks and leptons.