1. Geant4 Workshop 2004 Maria Grazia Pia, INFN Genova Physics Book Maria Grazia Pia INFN Genova on behalf of the Physics Book Team http://www.ge.infn.it/geant4/book/

2. Geant4 Workshop 2004 Maria Grazia Pia, INFN Genova News from last meetings Agreement on basic structure of the activity Physics validation across 3 levels: –basic elements of physics processes (e.g. cross sections, final state spectra, angular distributions etc.) –elementary composed physics quantities (e.g. particle ranges) –experimental observables (e.g. shower shapes) (Plans concerning electromagnetic physics only)

3. Geant4 Workshop 2004 Maria Grazia Pia, INFN Genova Basic elements of physics processes Physics quantityEnergy rangeReferencesNotes Cross sections Photon cross sections 1 keV-100 GeV NIST In progress, to be completed by Nov 2004 < 1 keV Database link to be added > 100 GeV Comparison against theoretical predictions Paper references to be added Other cross sections Paper on NIST comparison: Nov. 2004

4. Geant4 Workshop 2004 Maria Grazia Pia, INFN Genova Basic elements of physics processes Final state distributions Spectrum of secondary particles Angular distributions Bibliography to be collected Emphasis on differences at low/high energy LPM effect Polarisation

5. Geant4 Workshop 2004 Maria Grazia Pia, INFN Genova Other processes Multiple scattering p, pions, e, muons Atomic relaxation (paper Nov. 2004) X-ray fluorescence ESA test beam analysis Auger effect PIXE Cherenkov emission Scintillation Transition radiation Optical processes

6. Geant4 Workshop 2004 Maria Grazia Pia, INFN Genova Elementary composed quantities Physics quantity Energy range ReferenceNotes Range (e, p, ions) 1 keV- 100 GeV NISTPaper Nov 2004 Photon mass attenuation coefficient NISTPaper Nov 2004 Energy penetration in infinite media (e)

7. Geant4 Workshop 2004 Maria Grazia Pia, INFN Genova Experimental observables ObservableEnergy rangeReferenceNotes Shower shape1 keV-100 GeV Search of references in progress, to be completed by Nov 2004 Bragg peak Hadrontherapy groups (Catania, Japan...) More…

8. Geant4 Workshop 2004 Maria Grazia Pia, INFN Genova Status Results from the NIST validation project 4 E.M. physics papers expected to be submitted in Nov. 2004 1 comprehensive validation paper (NIST) to be submitted in Nov. 2004 Extended versions of the same material for the Physics Book All the software work up to now done by Barbara, Susanna, Koichi and Sandra Many fruitful discussions with Katsuya and Takashi Helpful consultation with Michel & Lazslo Slow progress, compatible with the low commitment from the Geant4 Collaboration