|Message: Re: Electron proton elastic scattering: what is the implemented cross section||Not Logged In (login)|
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electron scattering off hydrogen is part of EM physics lists, so in any variant of reference Physics List of Geant4 you will have general implementation. You may choose between models: Urban, WentzelVI + SS, or GS.
However, these models may not include specific corrections important for your case. SO, I would not excluded that you will need a new specialized model for liquid hydrogen. Of course, would advice first to study current Geant4 performance. Recent publication with state of art for scattering: J. Allison et al., by the Geant4 Collaboration., Nucl. Instrum. Meth. A 835, 186-225, 2016.