acpp automated calculation in particle physics france-japan-russia collaboration
DESCRIPTION
Particle Physics and Simulation. ACPP Automated Calculation in Particle Physics France-Japan-Russia collaboration. Denis Perret-Gallix CNRS. Matter and Forces. “The standard model”. Unsolved Mysteries. Why do we see matter and almost no anti-matter?. CP violation Belle- Babar exp. - PowerPoint PPT PresentationTRANSCRIPT
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
ACPPAutomated Calculation in Particle Physics
France-Japan-Russia collaboration
Denis Perret-Gallix CNRS
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Matter and Forces
“The standard model”
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
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 violationBelle- Babar exp.
Why the neutrino mass is so small?
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
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 …
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Beyond the “Standard Model”
Supersymmetry
M-theory and extra-dimensions
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science LHC at CERN
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
WMAP results
Universe expansion speeds up
• 70% dark energy
• 25% dark matter
• 5% matter and radiation
WMAP Photon temperature 2.73K
Comological constant anti-gravityEinstein: « My biggest mistake »
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Experiment Simulation
A Mandatory Component of HEP experiments
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Detectors Simulation Detectors
Event: E/P Quadri-vectors
Event: Hits, Energies, Timing
Event: E/P Quadri-vectors
Event: Hits, Energies, Timing
Reconstruction
Event Generator
Process
Physics Model Nature
Comparison
Event simulation
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Event simulationat LHC
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
u g
g~ u~
PP
t
t-~
t-
1-~
W-
10
u-
dW+
b
s-
c
10
u
Multiple interaction/underlying event
Hard sub-process
Parton shower
Hadronization
Heavy Quarks
Hadron collider Physics
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science Feynmandiagrams
Interaction
Computation
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
H+ t b at first order 1 at 1-loop 97 diagrams
Higher order calculations
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
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 Corrections LHC ~ 100% , LC ~ 10%
⇒” Tree” is not adequate.
Need higher order corrections!!
★ Multi-particle productions
⇒ increasing the number of diagrams. J. Fujimoto
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
International Research Group
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 PhysicsGRC4F (147 cit.), micrOMEGAs,…
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Grace Package(Japan)
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of ScienceComphep Package (Russia)
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
LEP II: GRC4Fa 4-fermion event generator for e+e- collisions
• 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
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Radiative Corrections to Higgs processes by GRACE
International Linear Collider
processes # of tree
(all)
# of 1-loop
(all)published
12 1350 Phys. Lett. B559(2003)252
12 2327 Phys. Lett. B571(2003)163
27 5417 Phys. Lett. B576(2003)152
42 4470 hep-ph/0407065
10 1099 Presented at ACAT03
44 6094 Presented at Loop&Legs(preliminary results)
81 19638 Presented at ECFA2004(Durham)
Hee
Httee
ZHHee
ee
Heeee
duee
HHee
J. Fujimoto
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Httee hep-ph/0307029Phys.Lett.B 571(2003) 163.
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
micrOMEGAsLAPP-Moscow
• WMAP data put constraints on the Susy parametres
•LHC/ILC put constraint on Omega
The relic density of Dark Matter in supersymmetry2800 tree level processes (CalcHEP)
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Automatic Calculations in Particle PhysicsACPP
• 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
Franco-Russia ForumDec. 6-7 2004
Denis Perret-GallixCNRS
Russian Academy of Science
Automatic Calculations in Particle PhysicsACPP 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, …