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Phys. Rev. D 46, 3708 - 3711 (1992)

Observation of Coulomb effects in production of π+π-, pπ-, and K+K- pairs in pp collisions at 27.5 GeV/c

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L. R. Wiencke, M. D. Church *, E. E. Gottschalk, R. A. Hylton †, B. C. Knapp, W. Sippach, and B. J. Stern ‡
Columbia University, Nevis Laboratories, Irvington, New York 10533

E. P. Hartouni, D. A. Jensen *, B. Klima *, M. N. Kreisler, M. S. Z. Rabin, J. B. Strait *, and J. Uribe
Department of Physics and Astronomy, University of Massachusetts, Amherst, Massachusetts 01003

D. C. Christian, G. Gutierrez, S. D. Holmes, and A. Wehmann
Fermilab, Batavia, Illinois 60510

C. Avilez §
Instituto de Fisica, Universidad de Guanajuato, Leon, Guanajato, Mexico

M. Forbush **, F. R. Huson, and J. T. White
Department of Physics, Texas A&M University, College Station, Texas 77843

Received 6 March 1992

In a study of collisions of 27.5 GeV/c protons in liquid hydrogen we have observed enhanced production of oppositely charged hadron pairs when the relative velocity of the two hadrons in the pair rest frame approaches αc. The scale and velocity dependence of the enhancement agree well with the effect of the attractive Coulomb interaction as described by the Gamow factor.


©1992 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevD.46.3708
DOI: 10.1103/PhysRevD.46.3708
PACS: 13.85.Hd, 13.40.Ks

* Present address: Fermilab, Batavia, Illinois 60510.
† Present address: IBM Research Laboratories, Yorktown Heights, New York 10598.
‡ Present address: AT&T Research Laboratories, Murray Hill, New Jersey 07974.
§ Deceased.
** Present address: DESY, Hamburg, Germany.

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