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Flavor asymmetry of the light quark sea from semi-inclusive deep-inelastic scattering

Publication ,  Journal Article
Ackerstaff, K; Airapetian, A; Akopov, N; Akushevich, I; Amarian, M; Aschenauer, EC; Avakian, H; Avakian, R; Avetissian, A; Bains, B; Belz, JE ...
Published in: Physical Review Letters
January 1, 1998

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. © 1998 The American Physical Society.

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Published In

Physical Review Letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

January 1, 1998

Volume

81

Issue

25

Start / End Page

5519 / 5523

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

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Ackerstaff, K., Airapetian, A., Akopov, N., Akushevich, I., Amarian, M., Aschenauer, E. C., … Kurisuno, M. (1998). Flavor asymmetry of the light quark sea from semi-inclusive deep-inelastic scattering. Physical Review Letters, 81(25), 5519–5523. https://doi.org/10.1103/PhysRevLett.81.5519
Ackerstaff, K., A. Airapetian, N. Akopov, I. Akushevich, M. Amarian, E. C. Aschenauer, H. Avakian, et al. “Flavor asymmetry of the light quark sea from semi-inclusive deep-inelastic scattering.” Physical Review Letters 81, no. 25 (January 1, 1998): 5519–23. https://doi.org/10.1103/PhysRevLett.81.5519.
Ackerstaff K, Airapetian A, Akopov N, Akushevich I, Amarian M, Aschenauer EC, et al. Flavor asymmetry of the light quark sea from semi-inclusive deep-inelastic scattering. Physical Review Letters. 1998 Jan 1;81(25):5519–23.
Ackerstaff, K., et al. “Flavor asymmetry of the light quark sea from semi-inclusive deep-inelastic scattering.” Physical Review Letters, vol. 81, no. 25, Jan. 1998, pp. 5519–23. Scopus, doi:10.1103/PhysRevLett.81.5519.
Ackerstaff K, Airapetian A, Akopov N, Akushevich I, Amarian M, Aschenauer EC, Avakian H, Avakian R, Avetissian A, Bains B, Baumgarten C, Beckmann M, Belostotski S, Belz JE, Benisch T, Bernreuther S, Bianchi N, Blouw J, Böttcher H, Borissov A, Brack J, Brauksiepe S, Braun B, Bray B, Brons S, Brückner W, Brüll A, Bruins EEW, Bulten HJ, Cadman RV, Capitani GP, Carter P, Chumney P, Cisbani E, Court GR, Dalpiaz PF, Sanctis ED, Schepper DD, Devitsin E, de Witt Huberts PKA, Di Nezza P, Düren M, Dvoredsky A, Elbakian G, Fantoni A, Fechtchenko A, Ferstl M, Fiedler K, Filippone BW, Fischer H, Fox B, Franz J, Frullani S, Funk MA, Gagunashvili ND, Gao H, Gärber Y, Garibaldi F, Gavrilov G, Geiger P, Gharibyan V, Giordjian V, Golendukhin A, Graw G, Grebeniouk O, Green PW, Greeniaus LG, Grosshauser C, Gute A, Haeberli W, Hansen JO, Hasch D, Häusser O, Henderson R, Henkes T, Henoch M, Hertenberger R, Holler Y, Holt RJ, Hoprich W, Ihssen H, Iodice M, Izotov A, Jackson HE, Jgoun A, Kaiser R, Kinney E, Kisselev A, Kitching P, Kobayashi H, Koch N, Königsmann K, Kolstein M, Kolster H, Korotkov V, Korsch W, Kozlov V, Kramer LH, Krivokhijine VG, Kurisuno M. Flavor asymmetry of the light quark sea from semi-inclusive deep-inelastic scattering. Physical Review Letters. 1998 Jan 1;81(25):5519–5523.

Published In

Physical Review Letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

January 1, 1998

Volume

81

Issue

25

Start / End Page

5519 / 5523

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences