Measurement of the Charged Pion Electromagnetic Form Factor

VU University Amsterdam, Amsterdamo, North Holland, Netherlands
Physical Review Letters (Impact Factor: 7.51). 03/2001; 86(9):1713-6. DOI: 10.1103/PhysRevLett.86.1713
Source: PubMed


Separated longitudinal and transverse structure functions for the reaction 1H(e,e(')pi(+))n were measured in the momentum transfer region Q2 = 0.6--1.6 (GeV/c)(2) at a value of the invariant mass W = 1.95 GeV. New values for the pion charge form factor were extracted from the longitudinal cross section by using a recently developed Regge model. The results indicate that the pion form factor in this region is larger than previously assumed and is consistent with a monopole parametrization fitted to very low Q2 elastic data.

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