If you see the picture, you can start to define your kinematics. You can choose a value for
with the scrollbars. For production via an intermediate state you can also choose
E0 the initial electron beam energy [MeV] q² the photon fourmomentum transfer [GeV²/c²] W the total center of mass energy [MeV] θCMS the center of mass in plane production angle [°]
A red window indicates an error, e.g. production below threshold or negativ electron energy etc. Watch the status line for more information.
MassX the mass of the intermediate state [MeV/c²] θdecay the decay angle in the rest system of X, in respect to the direction of X [°].
We investigate threshold π0 production as tests of chiral perturbation
With polarized beam and proton polarimeter, this reaction is also well suited to investigate the N->Δ transition (Nucleon deformation).
|H(e,e'n)π+||Measure the axial form factor of the Proton.|
|More threshold reactions to verify (or falsify ;-) ) chiral perturbation theory.|
|D(e,e'p)n||Electro disintegration of deuteron.|
|p(e,e'p)γ||Virtual Compton Scattering.|
|12C(e,e'[Δ->p,π-])11C||Choose (e,e'Resonance)... to define this reaction. With triple coincidence we can clearly separate the 11C ground state and tag the Delta production via the mass of the p-pi subsystem.|
|3He(e,e' p p)n||Choose (e,e'Resonance)... to define this reaction, define the p p sub system as resonance (just for kinematics, of course). Triple coincidence experiment for 3He breakup. We gain information about 2 nucleon correlations.|
|3He(e,e' p)x||Choose (e,e'Resonance)... to define this reaction, take D + gamma as decay particles to access the complete Emiss/Pmiss range.|
|12C(e,e'[ρ->π+,π-])12C||Choose (e,e'Resonance)... to define this reaction.|