Coincidence Measurements of Single <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi>K</mi></mrow><mrow><mo>+</mo></mrow></msup></mrow></math></span> Electroproduction

C. N. Brown; C. R. Canizares; W. E. Cooper; A. M. Eisner; G. J. Feldman; C. A. Lichtenstein; L. Litt; W. Lockeretz; V. B. Montana; F. M. Pipkin; N. Hicks

doi:10.1103/PhysRevLett.28.1086

Coincidence Measurements of Single $K^{+}$ Electroproduction

C. N. Brown, C. R. Canizares, W. E. Cooper, A. M. Eisner, G. J. Feldman, C. A. Lichtenstein, L. Litt, W. Lockeretz, V. B. Montana, F. M. Pipkin, and N. Hicks

Phys. Rev. Lett. 28, 1086 – Published 17 April 1972

Abstract

We have studied the reactions $e^{-} + p \to e^{-} + K^{+} + Λ$ and $e^{-} + p \to e^{-} + K^{+} + Σ^{0}$ by detecting the final electron and kaon in coincidence. Data are presented in the region of virtual-photon mass squared from - 0.18 to - 1.2 Ge $V^{2}$ , virtual-photoproduction center-of-mass energy from 1.85 to 2.60 GeV, and virtual-photoproduction center-of-mass angle from 0 to 28°. The $\frac{Σ^{0}}{Λ}$ ratio tends to be smaller than in photoproduction, and the data suggest large scalar production of the $K^{+} Λ$ final state.

Received 14 January 1972

DOI:https://doi.org/10.1103/PhysRevLett.28.1086

Authors & Affiliations

C. N. Brown, C. R. Canizares^*, W. E. Cooper^†, A. M. Eisner^‡, G. J. Feldman^§, C. A. Lichtenstein, L. Litt^∥, W. Lockeretz^¶, V. B. Montana^**, and F. M. Pipkin

Cyclotron Laboratory, Harvard University, Cambridge, Massachusetts 02138

N. Hicks

Wellesley College, Wellesley, Massachusetts 02181

^*Present address: Center for Space Research, Massachusetts Institute of Technology, Cambridge, Mass. 02139.
^†Present address: Physics Department, University of Michigan, Ann Arbor, Mich. 48104.
^‡Present address: Physics Department, University of California, Santa Barbara, Calif. 93106.
^§Present address: Stanford Linear Accelerator Center, Stanford, Calif. 94305.
^∥Present address: The Rockefeller University, New York, N. Y. 10021.
^¶Present address: Center for the Biology of Natural Systems, Washington University, St. Louis, Mo. 63130.
^**Present address: Earlham College, Richmond, Ind. 47374.