Gottfried sum from the ratio Fn2/Fp2
Abstract
Experimental results obtained at the CERN Super Proton Synchrotron on the structure-function ratio Fn2/Fp2 in the kinematic range 0.004<x<0.8 and 0.4<Q2<190 GeV2, together with the structure function Fd2 determined from a fit to published data, are used to derive the difference Fp2(x)-Fn2(x). The value of the Gottfried sum F(Fp2-Fn2)dx/x=0.240+/-0.016 is below the quark-parton-model expectation of 1/3.
- Publication:
-
Physical Review Letters
- Pub Date:
- May 1991
- DOI:
- 10.1103/PhysRevLett.66.2712
- Bibcode:
- 1991PhRvL..66.2712A
- Keywords:
-
- 13.60.Hb;
- 11.50.Li;
- Total and inclusive cross sections