The Large Hadron Collider finds a new way to measure the mass of a quark

The Large Hadron Collider finds a new way to measure the mass of a quark

The Large Hadron Collider’s ALICE experiment has, for the first time, directly measured a phenomenon known as a “deadcone”, which allowed physicists to directly measure the mass of a fundamental particle known as a “quark charm”.

Many particles that make up the visible universe around us are actually composite particles built from less massive fundamental particles called quarks. Protons and neutrons, for example, contain three quarks each. There are six different the flavours quark – high, low, high, low, weird and charming – which each have different masses, spins and other quantum properties. Different combinations of quarks also form different particles. The quarks are held together in these composite particles by the a mighty force, which is transmitted via a massless particle called a gluon. Collectively, quarks and gluons are known as “partons”.

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