Advertisement

Neutral currents and strangeness of the nucleon from the NuTeV experiment

  • Kevin S. McFarland
Conference paper

Abstract

The NuTeV neutrino experiment ran in 1997–1998 at Fermilab and accumulated the world’s highest statistics samples of high energy (20–300 GeV) separated neutrino and anti-neutrino interactions. The NuTeV collaboration has used this data to extract the electroweak parameter, sin2 θ W, from the measurement of the ratios of neutral current to charged current neutrino and antineutrino deep inelastic scattering cross sections. This result, though consistent with previous neutrino electroweak measurements, is not consistent with predictions. One interpretation involves the possibility that the strange quark sea carries significantly more momentum in the nucleon than the anti-strange sea. We report on the direct study of this possibility from measurements of charged-current interactions on strange quarks in our neutrino and anti-neutrino beams.

Keywords

Strange Quark Neutral Current Isospin Violation Electroweak Parameter Neutrino Scattering 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    P. Langacker et al.: Rev. Mod. Phys. 64, 87 (1991)CrossRefADSGoogle Scholar
  2. 2.
    K.S. McFarland, D. Naples et al.: Phys. Rev. Lett. 75, 3993 (1995)CrossRefADSGoogle Scholar
  3. 3.
    C.H. Llewellyn Smith: Nucl. Phys. B 228, 205 (1983)CrossRefADSGoogle Scholar
  4. 4.
    G.P. Zeller et al.: Phys. Rev. Lett. 88, 091802 (2002)CrossRefADSGoogle Scholar
  5. 5.
    K.S. McFarland et al. Eur. Phys. Jour. C1, 509 (1998)CrossRefADSGoogle Scholar
  6. 6.
    A. Blondel et al.: Zeit. Phys. C 45, 361 (1990)CrossRefGoogle Scholar
  7. 7.
    J. Allaby et al. Zeit. Phys. C 36, 611 (1985)ADSGoogle Scholar
  8. 8.
    E.A. Paschos, L. Wolfenstein: Phys. Rev. D 7, 91 (1973)CrossRefADSGoogle Scholar
  9. 9.
    E. Sather: Phys. Lett. B 274, 433 (1992)CrossRefADSGoogle Scholar
  10. 10.
    E.N. Rodionov, A.W. Thomas, J.T. Londergan: Mod. Phys. Lett. A 9, 1799 (1994)CrossRefADSGoogle Scholar
  11. 11.
    F. Cao, A.I. Signal: Phys. Rev. C 62, 015203 (2000)CrossRefADSGoogle Scholar
  12. 12.
    S. Davidson, S. Forte, P. Gambino, N. Rius, A. Strumia: hep-ph/0112302Google Scholar
  13. 13.
    K. McFarland, S.-O. Moch: Proceedings of Mini-Workshop on Electroweak Precision Data and the Higgs Mass, hepph/0306052Google Scholar
  14. 14.
    S. Kretzer: Procedings of the Rencontres de Moriond on QCD and High-Energy Hadronic Interactions, hepph/0405221Google Scholar
  15. 15.
    B. Dobrescu, R.K. Ellis: Phys. Rev. D 69, 114014 (2004)CrossRefADSGoogle Scholar
  16. 16.
    “A Combination of Preliminary Electroweak Measurements and Constraints on the Standard Model”, CERNEP/2001-98, hep-ex/0112021Google Scholar
  17. 17.
    M. Grünewald: private communication, for the fit of [16] without neutrino-nucleon scattering data includedGoogle Scholar
  18. 18.
    G.P. Zeller et al.: “On the effect of asymmetric strange seas and isospin-violating parton distribution functions on sin2 θ W measured in the NuTeV experiment,” hepex/0203004Google Scholar
  19. 19.
    E. Ma, D.P. Roy: Phys. Rev. D 65, 075021 (2002)CrossRefADSGoogle Scholar
  20. 20.
    P. Vilain et al: Phys. Lett. B 335, 248 (1994)ADSGoogle Scholar
  21. 21.
    W. Loinaz, N. Okamura, T. Takeuchi, L.C.R. Wijewardhana: Phys. Rev. D 67, 073012 (2003)CrossRefADSGoogle Scholar
  22. 22.
    U.K. Yang et al., [CCFR/NuTeV Collaboration]: Phys. Rev. Lett. 86, 2742 (2001)CrossRefADSGoogle Scholar
  23. 23.
    G.A. Miller, A.W. Thomas: hep-ex/0204007Google Scholar
  24. 24.
    S. Brodsky, I. Schmidt, J.-Y. Yang: SLAC-PUB-9677, USM-TH-136, hep-ph/0409279Google Scholar
  25. 25.
    A. Martin, R. Roberts, W. Stirling, R. Thorne: IPPP-04-62, DCPT-04-124, CAVENDISH-HEP-2004-28, hepph/0411040Google Scholar
  26. 26.
    R.S. Thorne (Cambridge U.): Int. J. Mod. Phys. A 19, 1074 (2004)CrossRefADSGoogle Scholar
  27. 27.
    A.I. Signal, A.W. Thomas: Phys. Lett. B 191, 205 (1987)CrossRefADSGoogle Scholar
  28. 28.
    M. Burkardt, B.J. Warr: Phys. Rev. D 45, 958 (1992)CrossRefADSGoogle Scholar
  29. 29.
    S. Brodsky, B. Ma: Phys. Lett. B 381, 317 (1996)CrossRefADSGoogle Scholar
  30. 30.
    W. Melnitchouk, M. Malheiro: Phys. Lett. B 451, 224 (1999)CrossRefADSGoogle Scholar
  31. 31.
    S. Kretzer et al.: Phys. Rev. Lett. 93, 041802 (2004); F. Olness et al.: MSU-HEP-030701, BNL-NT-03-17, RBRC-329, hep-ph/0312323CrossRefADSGoogle Scholar
  32. 32.
    D. Mason [NuTeV Collaboration]: Proceedings of 39th Rencontres de Moriond on QCD and High-Energy Hadronic Interactions, hep-ex/0405037Google Scholar

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Kevin S. McFarland
    • 1
  1. 1.University of RochesterRochesterUSA

Personalised recommendations