How does a pion decay into a muon?
Since the charged pions decay into two particles, a muon and a muon neutrino or antineutrino, then conservation of momentum and energy give the decay products definite energies. This contrasts with the three-particle decay of the neutral pion in which the emitted particles have a range of energies and momenta.
What pion means?
Definition of pion : a meson that is a combination of up and down quarks and antiquarks, that may be positive, negative, or neutral, and that has a mass about 270 times that of the electron.
Do kaons decay into muons?
In the following, two-body kaon decays to a muon and a SM neutrino are denoted K + → μ + ν μ , while those with a muon and a heavy neutrino are denoted K + → μ + ν h ; the notation K + → μ + N indicates either case.
What are the properties of pions?
Pion
| The quark structure of the positively charged pion. | |
|---|---|
| Composition | π + : u d π 0 : u u or d d π − : d u |
| Mean lifetime | π ± : 2.6×10−8 s π 0 : 8.5×10−17 s |
| Electric charge | π ± : ±1 e π 0 : 0 e |
| Charge radius | π ± : ±0.659(4) fm |
How long does it take a muon to decay?
about 2.2 μs
Muons have quite short lifetimes of about 2.2 μs at rest before they decay. However due to special relativity they have much longer lifetimes while travelling at high speeds. By slowing down these high speed muons, the muon decay constant at rest and the distribution of muon lifetimes was obtained.
Where does the term pion come from?
Etymology. From Dutch pion (“pawn”), from French pion, from Old French peon, poon, paon, from Late Latin pedō, pedōnem (“footsoldier”), from Latin pēs, pedem (“foot”).
What is the full form of meson?
meson. / (ˈmiːzɒn) / noun. any of a group of elementary particles, such as a pion or kaon, that usually has a rest mass between those of an electron and a proton, and an integral spin. They are responsible for the force between nucleons in the atomic nucleusFormer name: mesotron See also muon.