quarks

1
Physics
QCD Quantum Chromodynamics Fundamental
theory of Strong Nuclear interactions
atomic nuclei
protons, neutrons, BARYONS
GLUONS
pions, (p), Kaons (K), MESONS
quarks
2
Strong Nuclear Forces vs.
Electromagnetism
Quarks Gluons
Electrons Photons
No composites (bound states) of radiation
Composites of radiation (glueballs) or
radiation and matter (hybrids) are expected to
exist
3
Quark-Gluon excitation are short-lived 10-23
s Can only be identified through its decay
products
4
Example p- p ! X n
p0 h
Number_of_events (W)
(Rotational (Spin) properties of X)
X
X
Number_of_Events (Si Energyi)
X
( EnergyY Energyp0 Energyh )
5
General Reaction
AB ! c1 c2 L cn
Theory
Raw Data
Visualization
Reconstruction Hypothesis sorting
Number_of_Events (Kinematic variables of
c1,c2,L)
Coordinates of reaction products (particle id,
momenta, energies)
( Par1, Par2, L, ParM )
PWA Minimize Theory-Data v.r.t.
Par1, Par2, L
6
Dalitz Plot