Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS ACPP Automated Calculation in Particle Physics France-Japan-Russia collaboration Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS Matter and Forces “The standard model”

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

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS 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? Unsolved Mysteries … IV …

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS Beyond the “Standard Model” Supersymmetry M-theory and extra-dimensions

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS LHC at CERN

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS WMAP results Universe expansion speeds up 70%dark energy 25%dark matter 5%matter and radiation WMAP Photon temperature 2.73K Comological constant anti-gravity Einstein: « My biggest mistake »

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS Experiment Simulation A Mandatory Component of HEP experiments

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Detectors SimulationDetectors Event: E/P Quadri-vectors Event: Hits, Energies, Timing Event: E/P Quadri-vectors Event: Hits, Energies, Timing Reconstruction Event Generator Process Physics ModelNature Comparison Event simulation

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS Event simulation at LHC

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS ug g~g~ u~u~ P P t t -~ t-t-  1 -~ W-W- 1010 u-u- d W+W+ b s-s- c 1010 u Multiple interaction/underlying event Hard sub-process Parton shower Hadronization Heavy Quarks Hadron collider Physics

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS Feynman diagrams Interaction Computation

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS H +  t b at first order 1 at 1-loop 97 diagrams Higher order calculations

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

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS I nternational R esearch G roup ACPP: Automated Calculation in Particle Physics 48 physicists from France, Russia, Japan –Russia: –Russia: Lomonosov Moscow State Univ.(14), Russian Academy of Science(2) –Japan: –Japan: KEK: Minami-Tateya collaboration(19) –France: –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 Physics GRC4F (147 cit.), micrOMEGAs,…

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS Grace Package(Japan)

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS Comphep Package (Russia)

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS LEP II: GRC4F a 4-fermion event generator for e+e- collisions Tree level helicity amplitudes produced by “GRACE” 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/ , Comp. Phys. Comm 100:

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS Radiative Corrections to Higgs processes by GRACE International Linear Collider processes # of tree (all) # of 1-loop (all) published Phys. Lett. B559(2003) Phys. Lett. B571(2003) Phys. Lett. B576(2003) hep-ph/ Presented at ACAT Presented at Loop&Legs(preliminary results) Presented at ECFA2004(Durham) J. Fujimoto

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS hep-ph/ Phys.Lett.B 571(2003) 163.

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS micrOMEGAs LAPP-Moscow WMAP data put constraints on the Susy parametres LHC/ILC put constraint on Omega The relic density of Dark Matter in supersymmetry 2800 tree level processes (CalcHEP)

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS Automatic Calculations in Particle Physics ACPP 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

Russian Academy of Science Franco-Russia Forum Dec Denis Perret-Gallix CNRS Automatic Calculations in Particle Physics ACPP Future 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 Higher precision predictions are required by coming projects: LHC, ILC, super-B factory, Planck, …