1.7 - QUARKS AND ANTIQUARKS Flashcards
1
Q
What is the difference between pions and kaons?
A
Kaons have strangeness and strange quarks
2
Q
How can you work out the composition of a Pion plus?
A
Charge = +1.
Strangeness = 0.
Baryon number = 0.
To have this you must have either:
u and anti-d
or
u or anti-s.
No strangeness therefore it is u and anti-d
3
Q
A
4
Q
What is energy converted into and what is produced when you fire it at a proton?
A
5
Q
In terms of quarks, what happens in Beta minus decay?
A
udd turns to uud.
d quark changes into u quark
6
Q
What is changing a quark known as and what interaction can do this?
A
Changing a quarks character.
Weak interaction.
7
Q
What happens with quarks in beta minus decay?
A
u quark changes to d quark:
