TY - JOUR
T1 - Hard photodisintegration of a proton pair in 3He
AU - Brodsky, S. J.
AU - Frankfurt, L.
AU - Gilman, R.
AU - Hiller, J. R.
AU - Miller, G. A.
AU - Piasetzky, E.
AU - Sargsian, M.
AU - Strikman, M.
N1 - Funding Information:
We thank A. Radyushkin and L. Kondratyuk for useful discussions. The Stanford Linear Accelerator (supporting in part S.J.B.) is funded by the Department of Energy under Contract No. DE-AC03-76SF00515. The Southeastern Universities Research Association operates the Thomas Jefferson National Accelerator Facility (supporting in part S.J.B., R.G. and M.S.) under US DOE Contract DE-AC05-84ER40150. R.G. acknowledges the support of the US National Science Foundation, grant PHY-00-98642. J.R.H. acknowledges the support of the US DOE under Contract DE-FG02-98ER41087. G.A.M. acknowledges the support of the US DOE under Contract DE-FG03-97ER41014. E.P. is supported by the Israel Science Foundation founded by the Israel Academy of Science and Humanities. M.S. acknowledges the support of the US DOE under Contract DE-FG02-01ER-41172.
PY - 2004/1/1
Y1 - 2004/1/1
N2 - 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.
AB - 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.
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U2 - 10.1016/j.physletb.2003.10.018
DO - 10.1016/j.physletb.2003.10.018
M3 - Article
AN - SCOPUS:0346337000
SN - 0370-2693
VL - 578
SP - 69
EP - 77
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-2
ER -