Advertisement

Massive Lepton Pair Production — the Drell-Yan Process — with Nuclear Targets

  • E. L. Berger
Conference paper

Abstract

The Drell-Yan process, hA → (μμ-)X, in which a massive lepton-pair is produced inclusively from a nuclear target, offers the possibility for gaining unique insight into the A dependence of the quark and antiquark densities of nuclei, qA(x,Q2) and q-A(x,Q2). Measurements are crucial for testing whether the A dependence of deep-inelastic structure functions, known as the EMC effect, is a universal, process independent property of parton densities. Precise experiments with pion and nucleon beams on nuclear targets would extend knowledge of the A dependence of quark and antiquark densities of nuclei into important intervals of the fractional longitudinal momentum variable x which are not accessible easily in deep inelastic scattering. Models constructed to interpret the EMC effect are used to obtain predictions for the A dependence of massive lepton pair production. For tests of quantum chromodynamics, isolating nuclear dependence is necessary before definite conclusions can be drawn on the behavior of the pion structure function and on the magnitude and kinematic variation of predicted higher order terms (K factor). I indicate the sensitive regions of phase space and the increased level of experimental precision which is needed if a contribution is to be made to isolating the A dependence of quark and antiquark densities from the Drell-Yan process.

Keywords

Deep Inelastic Scattering Lepton Pair Pion Exchange Fractional Longitudinal Momentum Neutrino Case 
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.
    J. J. Aubert et al., Phys. Lett. 123B, 275 (1983).ADSGoogle Scholar
  2. 2.
    A. Bodek et al., Phys. Rev. Lett. 50, 1431 (1983)ADSCrossRefGoogle Scholar
  3. 2a.
    A. Bodek et al., Phys. Rev. Lett. 51, 534 (1983)ADSCrossRefGoogle Scholar
  4. 2b.
    R. G. Arnold et al., Phys. Rev. Lett. 52, 727 (1984)ADSCrossRefGoogle Scholar
  5. 2c.
    G. Bari et al., Phys. Lett. 163B, 282 (1985).ADSGoogle Scholar
  6. 3.
    H. Abramowicz et al., Z. Phys. C25, 29 (1984)ADSCrossRefGoogle Scholar
  7. 3a.
    M. A. Parker et al., Nucl. Phys. B232, 1 (1984)ADSCrossRefGoogle Scholar
  8. 3b.
    A. M. Cooper et al., Phys. Lett. 141B, 133 (1984).ADSGoogle Scholar
  9. 4.
    For reviews of experiment and theory, as well as an extensive list of references, see E. L. Berger, Argonne report ANL-HEP-PR-86–69, Proc. Second Conf. on the Intersections between Particle Nuclear Physics, Lake Louise, Canada, May, 1986.Google Scholar
  10. 5.
    E. L. Berger and F. Coester, Phys. Rev. D32, 1071 (1985)ADSCrossRefGoogle Scholar
  11. 5a.
    E. L. Berger, F. Coester, and R. B. Wiringa, Phys. Rev. D29, 398 (1984). See alsoADSCrossRefGoogle Scholar
  12. 5b.
    C. H. Llewellyn Smith, Phys. Lett. 128B, 107 (1983)ADSGoogle Scholar
  13. 5c.
    M. Ericson and A. W. Thomas, ibid. 128B, 112 (1983).ADSGoogle Scholar
  14. 6.
    E. Close et al., Phys. Lett. 129B, 346 (1983)ADSGoogle Scholar
  15. 6a.
    R. L. Jaffe et al., Phys. Lett. 134B, 449 (1984)ADSGoogle Scholar
  16. 6b.
    F. E. Close et al., Phys. Rev. D31, 1004 (1985).ADSCrossRefGoogle Scholar
  17. 7.
    E. L. Berger, Nucl. Phys. B267, 231 (1986), and references therein.ADSCrossRefGoogle Scholar
  18. 8.
    S. D. Drell and T. M. Yan, Phys. Rev. Lett. 25, 316 (1970). For reviews, consultADSCrossRefGoogle Scholar
  19. 8a.
    E. L. Berger, in Proc. of the Workshop on Drell-Yan Processes, Fermilab, 1982, pp. 1–62, and in Particles and Fields-1982, ed. by W. E. Caswell and G. A Snow (AIP Conf. Proc. No. 98), pp. 312–342.Google Scholar
  20. 9.
    For a discussion of the QCD “K factor”, see W. J. Stirling in Proc. of the Workshop on Drell-Yan Processes, 1982 op. cit., pp. 131–154.Google Scholar
  21. 10.
    A. S. Ito et al., Phys. Rev. D23, 604 (1981).ADSCrossRefGoogle Scholar
  22. 11.
    Fermilab proposal P-772, J. Moss et al.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1986

Authors and Affiliations

  • E. L. Berger
    • 1
  1. 1.High Energy Physics DivisionArgonne National LaboratoryArgonneUSA

Personalised recommendations