Hard photodisintegration of a proton pair in 3He Article

Brodsky, SJ, Frankfurt, L, Gilman, R et al. (2004). Hard photodisintegration of a proton pair in 3He . PHYSICS LETTERS B, 578(1-2), 69-77. 10.1016/j.physletb.2003.10.018

cited authors

  • Brodsky, SJ; Frankfurt, L; Gilman, R; Hiller, JR; Miller, GA; Piasetzky, E; Sargsian, M; Strikman, M



  • Hard photodisintegration of the deuteron has been extensively studied in order to understand the dynamics of the transition from hadronic to quark-gluon descriptions of the strong interaction. In this Letter, we discuss the extension of this program to hard photodisintegration of a pp pair in the 3He nucleus. Experimental confirmation of new features predicted here for the suggested reaction would advance our understanding of hard nuclear reactions. A main prediction, in contrast with low-energy observations, is that the pp breakup cross section is not much smaller than the one for pn break up. In some models, the energy-dependent oscillations observed for pp scattering are predicted to appear in the γ 3He → pp + n reaction. Such an observation would open up a completely new field in studies of color coherence phenomena in hard nuclear reactions. We also demonstrate that, in addition to the energy dependence, the measurement of the light-cone momentum distribution of the recoil neutron provides an independent test of the underlying dynamics of hard disintegration. © 2003 Published by Elsevier B.V.

publication date

  • January 1, 2004

published in

Digital Object Identifier (DOI)

start page

  • 69

end page

  • 77


  • 578


  • 1-2