A-Dependence Of Nuclear Transparency In Quasi-Elastic-A (E, E''p) At High Q(2)

T.G. ONEILL, W. LORENZON, P. ANTHONY, R.G. ARNOLD, J. ARRINGTON, E.J. BEISE, J.E. BELZ, P.E. BOSTED, H.J. BULTEN, M.S. CHAPMAN, K.P. COULTER, F. DIETRICH, R. ENT, M. EPSTEIN, B.W. FILIPPONE, H. GAO, R.A. GEARHART, D.F. GEESAMAN, J.O. HANSEN, R.J. HOLTH.E. JACKSON, C.E. JONES, C.E. KEPPEL, E.R. KINNEY, S. KUHN, K. LEE, A. LUNG, N.C.R. MAKINS, D.J. MARGAZIOTIS, R.D. MCKEOWN, R.G. MILNER, B. MUELLER, J. NAPOLITANO, J. NELSON, V. PAPAVASSILIOU, G.G. PETRATOS, D.H. POTTERVELD, S.E. ROCK, M. SPENGOS, Z.M. SZALATA, L.H. TAO, K. VANBIBBER, J.F.J. Van den Brand, J.L. WHITE, B. ZEIDMAN

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Abstract

The A-dependence of the quasielastic A(e, e''p) reaction has been studied at SLAC with H-2, C, Fe, and Au nuclei at momentum transfers Q(2) = 1, 3, 5, and 6.8 (GeV/c)(2). We extract the nuclear transparency T(A, Q(2)), a measure of the average probability that the struck proton escapes from the nucleus A without interaction. Several calculations predict a significant increase in T with momentum transfer, a phenomenon known as Color Transparency. Within the measurement uncertainty, no increase is seen for any of the nuclei studied.
Original languageEnglish
Pages (from-to)87-92
Number of pages6
JournalPhysics Letters B
Volume351
Issue number1-3
DOIs
Publication statusPublished - 25 May 1995
Externally publishedYes

Keywords

  • ELASTIC ELECTRON-SCATTERING
  • COLOR TRANSPARENCY
  • IMPULSE APPROXIMATION
  • DENSITY-DISTRIBUTION
  • PROTON PROPAGATION
  • MOMENTUM-TRANSFER
  • E,E''P REACTION
  • ANGLE
  • MODEL
  • MESON

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