What does kaon decay into?
pion
K mesons or kaons are unstable and can decay in a number of ways. In one important but very rare decay, a positive kaon – a bound state of an up quark and a strange antiquark — decays into a positive pion plus a neutrino and an antineutrino.
What are pions and kaons?
Pions and kaons are, along with protons and neutrons, the main building blocks of nuclear matter. They are connected to the Goldstone modes of dynamical chiral symmetry breaking, the mechanism thought to generate all hadron mass in the visible universe.
What quarks make up a kaon?
What makes kaons unique is that they are made of one up quark or down quark, and one strange quark. (One of the two quarks that make of a kaon must be an antiquark, and the other must be normal matter.
What is the antiparticle of K+?
Basic properties
| Particle name | Particle symbol | Antiparticle symbol |
|---|---|---|
| Kaon | K + | K − |
| Kaon | K 0 | K 0 |
| K-Short | K 0 S | Self |
| K-Long | K 0 L | Self |
Is kaon decay a weak interaction?
They decay in about 1.24 x 10-8 seconds: They decay as follows: Decay times in this range indicate decay by the weak interaction. Note that NONE of the decay products has a strange quark, so this decay violates conservation of strangeness and cannot proceed by the strong interaction.
How is a kaon produced?
The kaon (also called the K0 meson), discovered in 1947, is produced in high-energy collisions between nuclei and other particles. It has zero electric charge, and its mass is about one-half the mass of the proton.
Is kaon a lepton?
The kaon as a particle that can decay into pions. Leptons: electron, muon, neutrino (electron and muon types only) and their antiparticles. Strange particles as particles that are produced through the strong interaction and decay through the weak interaction (eg kaons).
What is the charge of kaon?
What is the decay of a neutral kaon?
The neutral kaon is an unstable particle that has been produced by high-energy accelerators. A neutral kaon at rest can decay into a pair of oppositely charged pions, as shown in Figure 20.11. The kaon mass is 3.566 times as large as the mass of a charged pion.
Why is kaon decay a weak interaction?
Kaons and sigmas contain strange quarks, so the “ground state” particles must decay by changing quark flavour. The strong and electromagnetic interactions cannot change flavour, but the weak interaction can, hence they can only decay weakly.
Can a kaon decay into a muon?
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 is the strangeness of a neutral kaon?
Kaons are mesons formed by a strange (or anti-strange) quark and an up or down quark. They have strangeness of ± 1. Both charged kaons (K+, K-) and neutral kaons (K0, K 0) exist. These neutral kaons are distinguished by their strangeness: S(K0)=1, S(K0)=-1.