1. What have we learned from Monte Carlo models? HIJING
Mohammed Aish
Physics department
Menoufia university
Egypt
Supervised by
Oleg Vasilevich Rogachevsky
2009

2. CERN Outlines NICA RHIC QGP Introduction.
Quark-Gluon Plasma - Phase Diagrame.
Monte Carlo Calculation in case of Heavy ion collision- HIJING Model.
Results from HIJING.
Conclusion.
Feature of the future.

3. Aim Of The Work Study of Au-Au collision at high energy
Learn about the strong interaction
Study V2 and Elliptical flow
Using HIJING Monte Carlo Model Au Au

4. u c s e t d m b g g ne n n W Z The Standard Model Force Carriers
Gravity -
the ghost at the feast
The Standard Model e
electron ne
e-neutrino d
down up u I m
muon n
m-neutrino s
strange c
charm II t
tau n
t-neutrino b
bottom
top
III g
gluon
Quarks g
photon
Force Carriers Z
Z boson W
W boson
Leptons
Generations of matter
Higgs
Boson?
Higgs
Boson

5. BOSONS
SUSY
Gravitino
Photino
Gluino
FERMIONS

6. Quark-Gluon Plasma
Phase Diagrame

7. Quark-Gluon Plasma
High-energy nuclear collisions will compress and heat the heavy nuclei so much that their individual protons and neutrons overlap and lots of pions arise, creating the Quark-Gluon Plasma (QGP)
QGP is thought to have existed ten millionths of second after the Big Bang; creating the primordial matter of universe in the laboratory, Little Bang.

8. Phase Diagram of Nuclear Matterq
SPS
AGS
RHIC
150
MeV
LHC
Center of mass energies:
for different accelerators
AGS: √s ~ GeV
SPS : √s ~ GeV
RHIC: √s ~ 200 GeV
LHC: √s ~ 5500 GeV
hadrons quarks and gluons hadrons
Let me now show the phase diagram of nuclear matter, temperature versus baryochemical potential / pressure.
In a heavy ion collision we start from cold ground state nuclear matter which we accelerate and collide.
By creating a high temperature and energy density in the system, nuclear matter undergoes an phase transition into the phase of a quark gluon plasma. (which is shown here)
The system reaches its initial temperature and starts expanding and cooling down. With reaching the critical temperature the quarks and gluons passes that phase transition and hadronize. (shown here)
We can vary with different accelerator energies the initial temperature of a collision. AGS,SPS,RHIC,LHC (Alternating Gradient Synchrotron)
How do I get an estimate on the critical parameters of the phase transition namely the temperature and the energy density.

9. Monte Carlo Calculations in case of Heavy ion collision
HIJING Model
Can surprise you! Why?

10. Today's Monte Carlo models
HIJING
PYTHIA/FRITIOF
NEXUS, VENUS
DPM

11. Assumption of HIJING Model
HIJING Model: Heavy ion Jet international Generator Model.
Glauber MC Model: Glauber theory is based on the assumptions of
1- A characteristic nucleon-nucleon (nn) cross section
2-Straight line trajectories of the colliding nucleons

12. V2 Number of Charged HIJING Model for Au+Au collision at 60 GeV/n

13. V2 Number of Charged HIJING Model for Au+Au collision at 130 GeV/n

14. HIJING Model for Au+Au collision at 60 GeV/n

15. HIJING Model for Au+Au collision at 130 GeV/n

16. Conclusion
V2 Elliptical flow, Rabidity Distribution, Npart and Ncoll predicted by the HIJING Monte Carlo for Au+Au and D+Au collision calculated.

17. Feature of the future
Comparison between HIJING Monte Carlo calculation and CERN data can be done.