The Upsilon meson ( ϒ ) is a quarkonium state (i.e. flavourless meson) formed from a bottom quark and its antiparticle. It was discovered by the E288...

first seen 1974, is about three times as massive as a proton, and the upsilon meson ( ϒ ) containing the bottom quark, first seen in 1977, is about ten...

the charm quark was first seen in the J/Psi meson ( J/ψ ) in 1974, and the bottom quark in the upsilon meson ( ϒ ) in 1977. The top quark (the last and...

of a meson. "Exotic" hadrons, containing more than three valence quarks, have been discovered in recent years. A tetraquark state (an exotic meson), named...

ISBN 978-981-02-0708-3. OCLC 636743000. History of the discovery of the bottom quark / Upsilon meson Archived 24 August 2017 at the Wayback Machine...

those that are, are dubbed "hadrons", which are now further classified as mesons (middle mass) and baryons (heavy weight). But the discovery of the (neutral)...

eta prime meson ( η′ ) are isosinglet mesons made of a mixture of up, down and strange quarks and their antiquarks. The charmed eta meson ( η c) and...

particle physics, a kaon (/ˈkeɪ.ɒn/), also called a K meson and denoted K , is any of a group of four mesons distinguished by a quantum number called strangeness...

D mesons are the lightest particle containing charm quarks. They are often studied to gain knowledge on the weak interaction. The strange D mesons (Ds)...

In particle physics, a pion (or a pi meson, denoted with the Greek letter pi: π ) is any of three subatomic particles: π0 , π+ , and π− . Each pion consists...