Data Base

The data base contains on the order of 25K data points from both proton ( p ->+n, p ->0p ) and neutron ( n ->-p , n ->0n ) target experiments, plus a smaller set of inverse reaction data (-p -> n).

Observables

Observables are defined in terms of both helicity and transversity amplitudes in: Barker, Donnachie and Storrow, Nucl. Phys. B95, 347 (1975). Helicity amplitudes can be constructed from our multipole amplitudes using the relations in: Arndt, Workman, Li, and Roper, Phys. Rev. C42, 1853 (1990).

Multipole Amplitudes

Multipole amplitudes are denoted by the N final state (L2I,2J: L being the angular momentum, I the isospin, and J the total spin), the electromagnetic transition (E:electric, M:magnetic), and the target type (n or p). Thus, P33pM is the usual M1+3/2 multipole associated with the -> N transition.

ACKNOWLEDGMENTS

The CNS Data Analysis Center is partially funded by the U.S. Department of Energy, the Thomas Jefferson Lab, and the Research Enhancement Funds of The George Washington University, with strong support from the GW Northern Virginia Campus.