Flashcards in Kaons, Mesons & Pions Deck (15):
1
What are cosmic rays?
High energy particles that travel through space from the stars.
2
What happens when cosmic rays enter the Earth's atmosphere?
They create short lived particles, anti particles and photons.
3
What are the three particles that wee discovered?
• Muon
• Pion
• Kaon
4
What is a muon?
Heavy Electron/Muon
• Negatively charged particle.
• Rest mass 200 times the rest mass of the electron
5
What is the charge of a pion?
Pion Meson
• Positively Charged
• Negatively Charged
• Neutral
6
What is the mass of a pion?
Pion Meson:
• Greater than a muon, but less than a proton.
• They are the lightest mesons
7
What are the charges of a kaon?
K Meson
• Positive
• Negative
• Neutral
8
What is the rest mass of a kaon?
• Greater than a pion, but less than a proton.
9
What is the mass of a Muon/Heavy Electron?
• 200 times that of an electron.
• Less than a pion
10
What are some features of kaons?
• Not very stable, they are more unstable than pions.
• Have a very short lifetime, and decay into pions.
11
What do kaons decay into?
• Pions
or
• Muon, and an antineutrino
/
• antimuon and a neutrino
12
What is the decay of charged pions?
• Muon and an antineutrino
or
• antimuon and a neutrino
13
What is the decay of a neutral meson?
High energy photons
14
What is the decay of a muon?
• Electron and an antineutrino
15