Abstract
In this paper, we suggest that semi-inclusive Λ production with a high energy electron or muon beam may be employed as an effective way to pin down the possible importance of the generalized Sullivan process, in which the virtual photon may strike and smash the meson in the cloud surrounding the target proton. The role of such generalized Sullivan processes in deep inelastic scattering (DIS) has been exploited recently in connection with the observed violation of the Gottfried sum rule as well as with the so-called “proton spin crisis”. Our present numerical results indicate that, in the kinematic region characterized typically by small x, large z, and a small specific range of y (with the parton variables x, y, and z defined in the standard manner), the contribution from Sullivan processes may indeed be of numerical importance as compared to that due to the fragmentation process.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J. D. Sullivan, Phys. Rev. D5, 1732 (1972)
A. W. Thomas, Phys. Lett. 126B, 97 (1983); L. L. Frankfurt, L. Mankiewicz, and M.I. Strikman, Z. Phys. A — Atomic Nuclei 334, 343 (1989); S. Kumano, Phys. Rev. D43, 59 (1991)
J. J. Aubert et al., Phys. Lett. 163B, 275 (1983)
A. Bodek et al., Phys. Rev. Lett. 50, 1431 (1983); 51, 534 (1983); R.G. Arnold et al., Phys. Rev. Lett. 52, 727 (1984)
G. Bari et al., Phys. Lett. 163B, 282 (1985)
L. Montanet et al., Particle Data Group, Phys. Rev. D50, 1173 (1994)
C. H. Llewellyn Smith, Phys. Lett. B128, 107 (1983)
M. Ericson and A.W. Thomas, Phys. Lett. B128, 112 (1983); M.Ericson, Prog. Part. Nucl. Phys. 11, 277 (1984); A. W. Thomas, Prog. Part. Nucl. Phys. 11, 325 (1984)
D. Stump, G. F. Bertsch, and J. Pumplin, in “Hadron Substructure in Nuclear Physics” (AIP Conf. Proc. No. 110), Eds. W-Y. P. Hwang and M. H. Macfarlane (AIP, New York, 1984), p. 339
E.L. Berger, F. Coester, and R. B. Wiringa, Phys. Rev. D29, 398 (1984)
E. M. Henley and G. A. Miller, Phys. Lett. B251, 453 (1990); S. Kumano, Phys. Rev. D43, 3067 (1991); S. Kumano and J.T.Londergan, Phys. Rev. D44, 717 (1991); A. Signal, A. W. Schreiber, and A. W. Thomas, Mod. Phys. Lett. A6, 271 (1991); J. Stern and G. Clement, Phys. Lett. B264, 426 (1991)
W-Y. P. Hwang, J. Speth, and G. E. Brown, Z. Phys. A339, 383 (1991)
W-Y. P. Hwang and J. Speth, Phys. Rev. D46, 1198 (1992)
K. Gottfried, Phys. Rev. Lett. 18, 1154 (1967)
P. Amaudruz et al., Phys. Rev. Lett. 66, 2712 (1991)
J. Ashman et al., Nucl. Phys. B328, 1 (1989); B. Adeva et al., Phys. Lett. B302, 533 (1993); P. L. Anthony et al., Phys. Rev. Lett. 71, 959 (1993); K. Abe et al., Phys. Rev. Lett. 75, 25 (1995)
C.-H. Chung and W-Y. P. Hwang, Phys. Rev. D49, 2221 (1994); J. Speth, private communication
C. I. Korpa, A.E.L. Dieperink, and O. Scholten, Z. Phys. A343, 461 (1992); G. D. Bosveld, A. E. L. Dieperink, and O. Scholten, Phys. Rev. C45, 2616 (1992)
R. D. Field and R.P. Feynmen, Phys. Rev. D15, 2590 (1977); Nucl. Phys. B136, 1 (1978)
S. D. Drell, D. J. Levy and T.-M. Yan, Phys. Rev. D1, 1035 (1970)
J. Badier et al., Z. Phys. C18, 281 (1983)
R. Badier et al., Z. Phys. C2, 265 (1979)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Hwang, WY.P., Wen, CY. Semi-inclusive Λ production and generalized sullivan processes. Z Phys A - Particles and Fields 358, 415–422 (1997). https://doi.org/10.1007/s002180050349
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s002180050349