The colors of quarks and gluons,
and confinement of quarks
Kazuaki Sugiya
June 7th, 2006
Shibata lab.
Baryon and meson are composed
of quarks.
Quark interacts with strong force.
Gluon is exchanged between
quarks.
gluon
quark
quark
Color of quarks and gluons
In QCD, quarks have
color degree of freedom.
There are three kinds of
colors.
Quarks
R
B
G
Gluons
BG
GR
RB
… and so on.
Gluon has a color and an
anti-color.
There are eight kinds of
gluons.
Hadron and colorlessness
• Baryon
G
R
Colorless
B
• Meson
Colorless
G
G
Baryon has red, blue
and green quarks.
Meson has quark and
anti-quark. They have
color and anti-color.
Hadrons are always colorless.
Single quark cannot be
extracted from hadron.
It is called ‘confinement
of quarks’
But…
Single quark
R
B
G
‘confinement
These have
single color.
of quarks’
In the poster session, I will show details of
colors of quarks and gluons, and
confinement of quarks.

Synthesis of chalcones via domino dehydrochlorination/Pd(OAc)2

Mass Spectra of B, B s Mesons using Dirac