2.2 Particle Sorting

What are hadrons?

particles and antiparticles that can interact via the strong interaction

What are leptons?

particles and antiparticles that cannot interact via the strong interaction

What three types of interactions do leptons interact by?

1. weak interaction

2. gravitational interaction

3. electromagnetic interaction(if charged)

What kind of interaction do hadrons interact by?

all four fundamental interactions

What is the only stable hadron?

proton

What kind of interaction do hadrons decay by?

weak interaction

What is the large hadron collider?

a ring shaped accelerator that boosts the kinetic energy of charged particles in the ring

What are around the ring to keep particles within?

fixed magnets

When they collide with other particles, The total energy of the particles and antiparticles before the collision is equal to

rest energy + kinetic energy

The total energy of the new particles and antiparticles after the

collision = their

rest energy+ kinetic energy

The rest energy of products is equal to

total energy before - kinetic energy of products

total energy before- kinetic energy of products

1000

What two groups are hadrons divided into?

1. Baryons

2. Mesons

What are baryons?

1. protons

2. all other hadrons that decay into protons

What are mesons?

hadrons that do not decay into protons

What are 4 hadrons?

1. proton

2. neutron

3. pion

4. kaon

What are 3 leptons?

1. electron

2. neutrino

3. muon

What are the two baryons?

protons

neutrons

What are the two mesons?

kaons

pions