\(\text{High-P}^2_\bot\) spin dependent measurements

  • A. D. Krisch
Conference paper

Abstract

The reason for studying the violent collisions of protons is to obtain information about the inner structure of the proton. To study the inner structure of the proton and to see what its constituents look like, one must observe large values of P which is the canonically conjugate variable to the impact parameter.

Now recall that, when you study proton-proton elastic scattering with an unpolarized beam, you can only measure one quantity, the spin average differential cross section. However, if either the beam or the target is polarized then you can measure one-spin quantities such as A, the analyzing power, which is sometimes incorrectly called the polarization. If both the beam and the target are polarized then you can measure two-spin quantities such as Ann, the spin-spin correlation parameter. It is useful to now define the polarization:
$$P = \frac{N(\uparrow ) - N(\downarrow )}{N(\uparrow ) + N(\downarrow )}$$
This definition applies to both the beam polarization and the target polarization.

Keywords

Burner Microwave Ferrite Polyethylene Shrinkage 

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References

  1. [1]
    A.D. Krisch, Phys. Rev. Lett. 11, (1963) 217; Phys. Rev. 135, (1964) B1456; Phys. Rev. Lett. 19, (1967) 1149; Phys. Lett. 44B, (1973) 71CrossRefADSGoogle Scholar
  2. P.H. Hansen and A.d. Krisch, Phys. Rev. D15, (1977) 3287ADSGoogle Scholar
  3. [2]
    A. Yokosawa, Phys. Rev. 64, (1980) 47Google Scholar
  4. [3]
    E.F. Parker et al, Phys. Rev. Lett. 31, (1973) 783.CrossRefADSGoogle Scholar
  5. W. de Boer et al., Phys. Rev. Lett. 34, (1975) 558CrossRefADSGoogle Scholar
  6. [4]
    K. Heller, Proceedings 6th International Symposium on High Energy Spin Physics; Marseille Sept. 1984, ed. J. Soffer; Journal de Physique 46, (1985) C2121Google Scholar
  7. [5]
    F. Abe et al., Phys. Rev. D34, (1985) 1950ADSGoogle Scholar
  8. [6]
    P.E. Schiein, Jour. de Physique 46, (1985) C2–131Google Scholar
  9. [7]
    D.G. Crabb et al., Phys. Rev. Lett. 41, (1978) 1257.CrossRefADSGoogle Scholar
  10. J.R. O’Fallon et al. ibid. 389, (1977) 733Google Scholar
  11. [8]
    S. Kistryn et al., Phys. Rev. Lett. 58, (1987) 1616.CrossRefADSGoogle Scholar
  12. V. Yuan et al., Phys. Rev. Lett. 57 (1986) 1680CrossRefADSGoogle Scholar
  13. [9]
    N. Lockyer et al., Phys. Rev. D30, (1984) 860ADSGoogle Scholar
  14. [10]
    P.H. Hansen et al., Phys. Rev. Lett. 50, (1983) 802.CrossRefADSGoogle Scholar
  15. D.C. Peaslee et al., Phys. Rev. Lett. 51, (1983) 2359.CrossRefADSGoogle Scholar
  16. P.R. Cameron et al., Phys. Rev. D32, (1985) 3070ADSGoogle Scholar
  17. [11]
    C.Y. Prescott, Proc. 5th Intern. Symposium on High Energy Spin Physics; Brookhaven Sept. 1982, ed. G. Bunce; AIP Conf. Proc. 95 p28 (AIP New York 1983).Google Scholar
  18. [12]
    A. Gaidot et al., Phys. Lett. 57B, (1975) 389; 61B, (1976) 103ADSGoogle Scholar
  19. [13]
    J. Ashman et al., Phys. Lett. B206, (1988) 364ADSGoogle Scholar
  20. [14]
    E. Bloom et al., Phys. Rev. Lett. 23, (1969) 930CrossRefADSGoogle Scholar
  21. [15]
    C.W. Akerlof et al., Phys. Rev. Lett. 17, (1966) 1105; Phys. Rev. 159, (1967) 1138CrossRefADSGoogle Scholar
  22. [16]
    A.D. Krisch and A.J. Salthouse, eds., Higher Energy Polarized Beams (AIP Conf. Proc. No. 42) (AIP New York 1978).Google Scholar
  23. [17]
    B. Cork et al., Proc. of the 1978 Summer Study on Polarized Protons in the Brookhaven AGS, ed. by A.D. Krisch (University of Michigan, Ann Arbor 1978), p1.Google Scholar
  24. [18]
    F.Z. Khiari et al., Phys. Rev. D39, (1989) 45ADSGoogle Scholar
  25. [19]
    E.D. Courant and R.D. Ruth, Report No. BNL 51270, 1980 (unpublished).Google Scholar
  26. [20]
    D.G. Crabb et al., in Proc. of the 8th Intern. Symp. on High Energy Spin Physics, (Minneapolis 1988).Google Scholar
  27. [21]
    D.G. Crabb et al., Phys. Rev. Lett. 60, (1988) 2351CrossRefADSMathSciNetGoogle Scholar
  28. [22]
    J. Antille et al., Nucl. Phys. B185, (1981) 1CrossRefADSGoogle Scholar
  29. [23]
    J.V. Allaby et al., Nucl. Phys. B52, (1973) 316CrossRefADSGoogle Scholar
  30. [24]
    E.A. Crosbie et al., Phys. Rev. D23, (1981) 600ADSGoogle Scholar
  31. [25]
    K.A. Brown et al., Phys. Rev. D31, (1985) 3017ADSGoogle Scholar
  32. [26]
    G.R. Court et al., Phys. Rev. Lett. 57, (1986) 507CrossRefADSGoogle Scholar
  33. [27]
    A.D. Krisch, Experiment NEPTUN-A to be published in Proc. of the Workshop on UNK (March 1989).Google Scholar
  34. [28]
    G. Cocconi et al., Phys. Rev. Lett. 11, (1963) 499; Phys. Rev. 138, (1965) B165CrossRefADSGoogle Scholar
  35. [29]
    V.D. Apokin et al., Proposal of Experiment NEPTUN (Serpukhov 1988).Google Scholar
  36. [30]
    H.A. Bethe and V.F. Weisskopf, Independent comments at Copenhagen and CERN Seminars (June 1978).Google Scholar
  37. [31]
    H.J. Lipkin, Phys. Lett. B181, (1987) 164ADSGoogle Scholar
  38. [32]
    Y. Tomozawa, Phys. Rev. D36, (1987) 2856ADSGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • A. D. Krisch
    • 1
  1. 1.Randall Laboratory of PhysicsThe University of MichiganAnn ArborUSA

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