Measurement of the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>A</mi></math></span> Dependence of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mfrac><mrow><mi>J</mi></mrow><mrow><mi>ψ</mi></mrow></mfrac></math></span> Photoproduction

R. L. Anderson; W. W. Ash; D. B. Gustavson; T. Reichelt; D. M. Ritson; D. J. Sherden; C. K. Sinclair; U. Camerini; J. G. Learned; R. Prepost; D. E. Wiser

doi:10.1103/PhysRevLett.38.263

Measurement of the $A$ Dependence of $\frac{J}{ψ}$ Photoproduction

R. L. Anderson, W. W. Ash, D. B. Gustavson, T. Reichelt, D. M. Ritson, D. J. Sherden, C. K. Sinclair, U. Camerini, J. G. Learned, R. Prepost, and D. E. Wiser

Phys. Rev. Lett. 38, 263 – Published 7 February 1977

Abstract

$\frac{J}{ψ}$ photoproduction has been measured from beryllium and tantalum targets by observing the yield of single muons at a transverse momentum of 1.65 GeV/c with a bremsstrahlung beam of $E_{0} = 20$ GeV. The results have been interpreted in terms of a nuclearoptics model to yield the $ψ$ -nucleon total cross section. The result is $σ_{ψ N} = 3.5 \pm 0.8$ mb.