@article{d0bb8d7b6bc24b2e86bf793b4d2a8a7c,
title = "Flavor asymmetry of the light quark sea from semi-inclusive deep-inelastic scattering",
abstract = "The flavor asymmetry of the light quark sea of the nucleon is determined in the kinematic range 0.02 < x < 0.3 and 1 < Q2 < 10GeV2 for the first time from semi-inclusive deep-inelastic scattering. The quantity [d¯(x)- ¯u(x)]/[u(x)-d(x)] is derived from a relationship between the yields of positive and negative pions from unpolarized hydrogen and deuterium targets. The flavor asymmetry d¯ - u¯ is found to be nonzero and x dependent, showing an excess of d¯ over u¯ quarks in the proton.",
author = "{HERMES Collaboration} and K. Ackerstaff and A. Airapetian and N. Akopov and I. Akushevich and M. Amarian and Aschenauer, {E. C.} and H. Avakian and R. Avakian and A. Avetissian and B. Bains and C. Baumgarten and M. Beckmann and St Belostotski and Belz, {J. E.} and Th Benisch and S. Bernreuther and N. Bianchi and J. Blouw and H. B{\"o}ttcher and A. Borissov and J. Brack and S. Brauksiepe and B. Braun and B. Bray and St Brons and W. Br{\"u}ckner and A. Br{\"u}ll and Bruins, {E. E.W.} and Bulten, {H. J.} and Cadman, {R. V.} and Capitani, {G. P.} and P. Carter and P. Chumney and E. Cisbani and Court, {G. R.} and Dalpiaz, {P. F.} and Sanctis, {E. De} and Schepper, {D. De} and E. Devitsin and {de Witt Huberts}, {P. K.A.} and {Di Nezza}, P. and M. D{\"u}ren and A. Dvoredsky and G. Elbakian and A. Fantoni and A. Fechtchenko and M. Ferstl and K. Fiedler and Filippone, {B. W.} and Gagunashvili, {N. D.}",
year = "1998",
doi = "10.1103/PhysRevLett.81.5519",
language = "English",
volume = "81",
pages = "5519--5523",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "25",
}