Leptony Flashcards
(26 cards)
What are leptons?
Leptons are fundamental particles that do not undergo strong interactions.
How many types of leptons are there?
There are six types of leptons: electron, muon, tau, and their corresponding neutrinos.
True or False: Leptons have a fractional electric charge.
False: Leptons have an integer electric charge.
What is the charge of an electron?
The charge of an electron is -1 elementary charge.
Fill in the blank: The three charged leptons are the electron, muon, and _______.
tau.
What is the role of neutrinos in the lepton family?
Neutrinos are neutral leptons that interact only via the weak force.
Which lepton is the heaviest?
The tau lepton is the heaviest of the leptons.
What is the symbol for the muon?
The symbol for the muon is μ.
True or False: Leptons can be transformed into quarks.
False: Leptons cannot be transformed into quarks.
What are the corresponding neutrinos for the electron, muon, and tau?
The corresponding neutrinos are the electron neutrino, muon neutrino, and tau neutrino.
Fill in the blank: Leptons are part of the _______ model of particle physics.
Standard.
What type of force do leptons interact with?
Leptons interact with the weak force and electromagnetic force.
What is the mass of the electron approximately?
The mass of the electron is approximately 0.511 MeV/c².
What is the lifetime of the tau lepton?
The tau lepton has a very short lifetime of about 2.9 x 10^-13 seconds.
True or False: Leptons are subject to the strong nuclear force.
False: Leptons are not subject to the strong nuclear force.
Which lepton is produced in beta decay?
The electron is produced in beta decay.
What is the lepton number of leptons?
The lepton number is a conserved quantum number associated with leptons.
Fill in the blank: The muon neutrino is associated with the _______ lepton.
muon.
What is the primary interaction that leptons participate in?
Leptons primarily participate in weak interactions.
True or False: All leptons have mass.
True: All leptons have mass, but neutrinos have very small mass.
What is the role of leptons in the universe?
Leptons play a key role in processes such as beta decay and cosmic ray interactions.
What is the charge of a muon?
The charge of a muon is -1 elementary charge.
Which lepton has a positive charge?
There are no leptons with a positive charge; all charged leptons have negative charge.
Fill in the blank: The tau neutrino is associated with the _______ lepton.
tau.
