12. Moeller scattering

16. Bhabha scattering

19. Uses Bhabha scattering has been used as a luminosity monitor in a number of e+e- collider physics experiments. The accurate measurement of luminosity is necessary for accurate measurements of cross sections.luminosity Small-angle Bhabha scattering was used to measure the luminosity of the 1993 run of the Stanford Large Detector (SLD), with a relative uncertainty of less than 0.5%.Stanford Large Detector Electron-positron colliders operating in the region of the low-lying hadronic resonances (about 1 GeV to 10 GeV), such as the Beijing Electron Synchrotron (BES) and the Belle and BaBar "B-factory" experiments, use large-angle Bhabha scattering as a luminosity monitor. To achieve the desired precision at the 0.1% level, the experimental measurements must be compared to a theoretical calculation including next-to-leading-order radiative corrections.Beijing Electron SynchrotronBelleBaBarradiative corrections The high-precision measurement of the total hadronic cross section at these low energies is a crucial input into the theoretical calculation of the anomalous magnetic dipole moment of the muon, which is used to constrain supersymmetry and other models of physics beyond the Standard Model.anomalous magnetic dipole momentmuonsupersymmetrybeyond the Standard Model

21. J/ BNL SLAC

40. Interazione elastica: e+p e+p Interazione inelastica: e+p e+X Interazione elastica: e+ e+ q 0

45. =1/x

46. F 1 point = F 2 point = Dipendono da x ma non da Q 2 singolarmente Interazione inelastica: e+p e+X Interazione elastica: e+ e+ Caso elastico: Q 2 =2M