Measurement of the Differential Cross Section for the reaction <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mmultiscripts><mrow><mi mathvariant="normal">H</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>2</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow><mo>(</mo><mi>γ</mi><mo>,</mo><mi>p</mi><mo>)</mo><mi>n</mi></math></span> at High Photon Energies and <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>θ</mi></mrow><mrow><mi mathvariant="normal">c</mi><mo>.</mo><mi mathvariant="normal">m</mi><mo>.</mo><mn></mn></mrow></msub></mrow><mo>=</mo><mn>90</mn><mn></mn><mi>°</mi></math></span>

doi:10.1103/PhysRevLett.61.2530

Measurement of the Differential Cross Section for the reaction ${}^{2}H (γ, p) n$ at High Photon Energies and $θ_{c . m .} = 90 °$

J. Napolitano et al.

Phys. Rev. Lett. 61, 2530 – Published 28 November 1988

Abstract

We have measured the differential cross section for two-body deuteron photodisintegration at $θ_{c . m .} = 90 °$ and for photon energies between 0.8 and 1.6 GeV. At energies above ≃ 1.2 GeV, the data appear to obey a simple scaling law predicted by constituent-counting rules assuming parton degrees of freedom for the deuteron and nucleons. Agreement with model calculations based on meson exchange or "reduced nuclear amplitudes" is discussed.