Standard model

Question 1

what is elementary particle

Answer 1

quarks
leptons
guage bosons

Question 2

types of gauge bosons and the forces they mediate

Answer 2

gluon - SNF
photon - EMF
w boson (+/-) WNF
z boson WNF

Question 3

electron electron feynman

Answer 3

electrons approach each other on the x-axis and exchange a photon. this causes e- to be repelled and change direction

Question 4

electron - positron feynman

Answer 4

electron and positron collide and annihilate into photons. photons pair produce a new electron and positron

Question 5

neutron decay feynman

Answer 5

neutron decays into proton
down quark becomes up quark
mediated by emission of W- boson
decays into electron and electron antineutrino

Question 6

what is happening in feynman diagrams

Answer 6

trying to conserve energy and momentum

Question 7

what force do baryons experience

Answer 7

strong force

Question 8

what force do leptons experience

Answer 8

weak force

Question 9

why do we need electron antineutrino in feynman diagram

Answer 9

the anti maintains symmetry between baryon number, lepton number and mass

Question 10

types of symmetry

Answer 10

time reversal (switching sides)
charge reversal (becomes anti)
crossing (one taken to other side and made into anti)