ACPP Automated Calculation in Particle Physics France-Japan-Russia collaboration

1. Particle Physics and Simulation ACPP Automated Calculation in Particle Physics France-Japan-Russia collaboration Denis Perret-Gallix CNRS Denis Perret-Gallix CNRS

2. Denis Perret-Gallix CNRS

3. Denis Perret-Gallix CNRS

4. Matter and Forces “The standard model” Denis Perret-Gallix CNRS

5. Unsolved Mysteries Why do we see matter and almost no anti-matter? CP violation Belle- Babar exp. Why the « standard model» does not predict the mass ? The Higgs Particle ? What is this « dark matter » that we cannot see but has visible gravitational effects? Why the neutrino mass is so small? Denis Perret-Gallix CNRS

6. Unsolved Mysteries … IV … Are quarks and leptons actually fundamental, or made up of even more fundamental particles? Why are there exactly three generations of quarks and leptons? How does gravity fit into all of this? Denis Perret-Gallix CNRS

7. Beyond the “Standard Model” Supersymmetry M-theory and extra-dimensions Denis Perret-Gallix CNRS

8. Particle Physics: Pure Knowledge Research Ultimate Quest: The Theory of Everything Denis Perret-Gallix CNRS

9. A highly Experimental and Technical Research Denis Perret-Gallix CNRS

10. LHC at CERN Denis Perret-Gallix CNRS

11. Denis Perret-Gallix CNRS

12. Denis Perret-Gallix CNRS

13. Denis Perret-Gallix CNRS

14. Denis Perret-Gallix CNRS

15. A World-Wide Endeavour Denis Perret-Gallix CNRS

16. Denis Perret-Gallix CNRS

17. Denis Perret-Gallix CNRS

18. Astro-particles Cosmology Denis Perret-Gallix CNRS

19. WMAP results Universe expansion speeds up WMAP Photon temperature 2.73K • 70% dark energy • 25% dark matter • 5% matter and radiation Comological constant anti-gravity Einstein: « My biggest mistake » Denis Perret-Gallix CNRS

20. Experiment Simulation A Mandatory Component of HEP experiments Denis Perret-Gallix CNRS

21. Looking for Higgs Denis Perret-Gallix CNRS

22. Simulation and data Analysis Physics Model Nature Process Event simulation Event Generator Event: E/P Quadri-vectors Detectors Simulation Detectors Event: Hits, Energies, Timing Event: Hits, Energies, Timing Reconstruction Comparison Event: E/P Quadri-vectors

23. No detector design no results without simulation Denis Perret-Gallix CNRS

24. Event simulationat LHC Denis Perret-Gallix CNRS

25. P P Hadron collider Physics Hadronization b c s- HeavyQuarks W+ u- d Parton shower W- 10 10 t- t 1-~ u t-~ u~ Hard sub-process g~ u g Multiple interaction/underlying event Denis Perret-Gallix CNRS

26. Interaction Computation Feynman diagrams Denis Perret-Gallix CNRS

27. Higher order calculations H+ t b at first order 1 at 1-loop 97 diagrams Denis Perret-Gallix CNRS

28. What is automatic calculation？ It is now impossible to perform accurate theoretical calculations by hand for collider experiments. ★Increasing the requested accuracyat LHC ～10% at ILC ～0.1% Radiative CorrectionsLHC ～ 100%，LC　～ 10% ⇒”Tree” is not adequate. Need higher order corrections!! ★ Multi-particle productions ⇒increasing the number of diagrams. J. Fujimoto Denis Perret-Gallix CNRS

29. An International Collaboration Denis Perret-Gallix CNRS

30. 48 physicists from France, Russia, Japan Russia:Lomonosov Moscow State Univ.(14), Russian Academy of Science(2) Japan:KEK: Minami-Tateya collaboration(19) France:CNRS(9), Univ. de Savoie, Clermont 2(1), Montpellier 2(2), Paris. 11(1) Main packages: Grace, Grace 1-L (28 pub), CompHEP, LanHEP, CalcHEP (30 Pub) For LHC, ILC, Astro-Particle PhysicsGRC4F (147 cit.), micrOMEGAs,… International Research GroupACPP: Automated Calculation in Particle Physics Denis Perret-Gallix CNRS

31. Grace Package(Japan) Denis Perret-Gallix CNRS

32. Comphep Package (Russia) Denis Perret-Gallix CNRS

33. Applications: LEP, B-factory, LHC, ILC, Cosmology Denis Perret-Gallix CNRS

34. Tree level helicity amplitudes produced by “GRACE” http://www-sc.kek.jp/minami/ Fermion mass and full spin correlations included 76 4-fermion final states processes >2500 diag. ISR, FSR, Beamstrahlung Interface to Parton showers and hadronization (Pythia) Anomalous couplings hep-ph/9605312, Comp. Phys. Comm 100:128-156 LEP II: GRC4Fa 4-fermion event generator for e+e- collisions Denis Perret-Gallix CNRS

35. Denis Perret-Gallix CNRS

36. Radiative Corrections to Higgs processes by GRACE International Linear Collider Denis Perret-Gallix CNRS J. Fujimoto

37. hep-ph/0307029Phys.Lett.B 571(2003) 163. Denis Perret-Gallix CNRS

38. micrOMEGAs LAPP-Moscow The relic density of Dark Matter in supersymmetry 2800 tree level processes (CalcHEP) • WMAP data put constraints on the Susy parametres • LHC/ILC put constraint on Omega Denis Perret-Gallix CNRS

39. Mandatory for experiment designs and data interpretation A perfect case for International collaboration A pluridisciplinary program: Theory, Computing and experiments Very active collaboration AIHEP/ACAT workshops (Advanced Computing and Analysis Techniques) Les Houches workshops Automatic Calculations in Particle PhysicsACPP Denis Perret-Gallix CNRS

40. Theory developments for 1-loop, 2-loop processes Better interface with experiments (Standardization,…) Large computing power Efficient symbolic manipulation package Singularity tolerant numerical integration algorithm High precision floating point calculation (quadruple/octuple precision) High performance parallel/farm systems Automatic Calculations in Particle PhysicsACPP Future Higher precision predictions are required by coming projects: LHC, ILC, super-B factory, Planck, … Denis Perret-Gallix CNRS