In particle physics, a pion (/ ˈ p aɪ. ɒ n /, PIE-on) or pi meson, denoted with the Greek letter pi (π), is any of three subatomic particles: π 0, π +, and π −. Each pion consists of a quark and an antiquark and is therefore a meson. Pions are the lightest mesons and, more generally, the lightest hadrons. They are unstable, with the ...

In particle physics, a meson (/ ˈ m iː z ɒ n, ˈ m ɛ z ɒ n /) is a type of hadronic subatomic particle composed of an equal number of quarks and antiquarks, usually one of each, bound together by the strong interaction.

The pi-meson, or pion, which is the lightest meson and an important component of cosmic rays, exists in three forms: with charge e (or 1), with charge 0, and with charge −e (or −1). In the positive state an up quark combines with a down antiquark;…

A pion, π meson, or pi meson is a type of meson, made of one up quark (u) and one down antiquark (d̅). Mesons are a category of subatomic particles, which are composed of one quark, and one antiquark. There are six types of quarks (called flavours) but only two flavours go together to make a pion.

Nov 6, 2024 · Learn all about mesons for your AQA A Level Physics exam. This revision note includes information on pions and the strong nuclear force, and kaon decay.

In particle physics, pion (short for pi meson) is the collective name for three subatomic particles: π 0, π + and π −. Pions are the lightest mesons (excluding the misnamed "Mu Meson" or muon) and play an important role in explaining low-energy properties of the strong nuclear force.

pion. The pion, being the lightest meson, can be used to predict the maximum range of the strong interaction. The strong interaction properties of the three pions are identical. The connection between pions and the strong force was proposed by Hideki Yukawa.

Either charged Pion possess a mass of 139.6 MeV and neutral Pion is 135.0 MeV. Pions have spin zero. π⁰ → 𝛾 + 𝛾 ; This decay is Electromagnetic in nature. The presence of photons in final state leads us to expect the process is electromagnetic in nature.

If the pion does play a special role, it is because it is the lightest strongly interacting particle. More than anything else, the 1947 discoveries made physicists realize that the subnuclear world was more complex than had been suspected by looking at everyday nuclei.

A pion is a type of meson that mediates the strong nuclear force between nucleons. Pions come in three varieties: positively charged ($\pi^+$), negatively charged ($\pi^-$), and neutral ($\pi^0$).