= Form factors =

The following form-factor parametrisations (fitted to experimental data) are available in Elegent:

* Hofstadter [[http://link.aps.org/doi/10.1103/RevModPhys.30.482|HOFSTADTER, R., BUMILLER, F. and YEARIAN, M. R., Rev. Mod. Phys. 30 (1958) 482-497]]
* Borkowski [[http://dx.doi.org/10.1016/0375-9474(74)90392-3|BORKOWSKI F., PEUSER, P., SIMON, G. G., WALTHER et al., Nuclear Physics A 222 (1974) 269-275]]
  [[http://dx.doi.org/10.1016/0550-3213(75)90514-3|BORKOWSKI F., PEUSER, P., SIMON, G. G., WALTHER et al., Nucl. Phys. B93 (1975) 461]]
* Kelly [[http://link.aps.org/doi/10.1103/PhysRevC.70.068202|KELLY, J. J., Phys. Rev. C70 (2004) 068202]]
* Arrington [[http://link.aps.org/doi/10.1103/PhysRevC.76.035205|ARRINGTON, J., MELNITCHOUK, W. and TJON, J. A., Phys. Rev. C76 (2007) 035205]]
* Puckett [[http://arxiv.org/abs/1008.0855v1|PUCKETT, A. J. R., arXiv:1008.0855v1]]

The form-factor choice is represented by [[source:/trunk/interface/CoulombInterference.h|Elegent::CoulombInterference::FFType]].

In Elegent, an effective form-factor (a combination of electric and magnetic one) is used. For details see the journal publication linked from the [[https://elegent.hepforge.org/|home page]] or Section 1.3.1 in [[http://cdsweb.cern.ch/record/1441140|CERN-THESIS-2011-214]].