Sanford-Wang parameterisation

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Template:Orphan The Sanford-Wang parameterisation is an empirical formula used to model the production of pions in nuclear interaction of the form p+A → +X where a beam of high-energy protons hit a material.

Its formula for the double-differential cross section with respect to momentum (p) and solid angle () is as follows.

Where p and are the momentum of the outgoing pion and its angle from the direction of the incident proton. The numbers are the Sanford-Wang parameters and are typically varied to give a good fit with experimental data.


  • J. R. Sanford and C. L. Wang, Brookhaven National Laboratory, AGS internal report, 1967 (unpublished); C. L. Wang, Phys. Rev. Letters 25, 1068 (1970); ibid. 25, 1536(E) (1970).