8.5 Standard Model - Quarks Flashcards
What are quarks?
Building blocks of hadrons
What is a hadron?
Particle made up of quarks
What are the two types of hadrons?
baryons and mesons
What are the 3 quarks with positive charge?
up quark u
charmed quark c
top quark t
What is the charge(value) on quarks with positive charge.
2/3 e
What are the 3 quarks with negative charge?
down quark d
strange quark s
bottom quark b
What is the charge (value) on quarks with a negative charge?
-1/3e
What do all quarks have?
Corresponding anti-quarks
What is the heaviest positive quark?
top quark
What is the lightest positive quark?
up quark
What is the lightest negative quark?
down quark
What is the heaviest negative quark?
botton quark
How do we denote an antiquark?
quark symbol with a bar above it
What is the property of a strange quark?
strangeness
Why do we not know the precise mass of each quark?
As it is not possible to get a quark on its own (always comes with an antipartner) - meson
What is this called?
quark confinement
What is a baryon?
A type of a hadron, which contains 3 quarks.
Example of baryon?
proton
What do antiquarks have compared to quarks?remember the anti strange quark
Same mass, opposite charge , opposite baryon number (and if anti strange then opposite strangeness number.)
