Measurement of differential cross-sections of two-body deuteron photodisintegration at photon energies of 0. 8--1. 8 GeV
The authors have measured the differential cross section for two-body deuteron photodisintegration at [theta][sub cm] = 90[degrees], 114[degrees] and 143[degrees], and for photon energies between 0.8 and 1.8 GeV. At energies above [approx equal]1.2 GeV, the data at [theta][sub cm] = 90[degrees], and 114[degrees] appear to obey a simple scaling law predicted by constituent-counting rules assuming parton degrees of freedom for the deuteron and nucleons. The shape of the angular distribution shows an abrupt change at E[sub [gamma]] [ge] 1.4 GeV, in that at 1.4 and 1.6 GeV cross sections peak at [theta][sub cm] = 143[degrees], but this is not the case for E[sub [gamma]] < 1.2 GeV. Agreement with model calculations based on meson exchange and on [open quotes]reduced nuclear amplitudes[close quotes] is discussed.
- Research Organization:
- Northwestern Univ., Chicago, IL (United States)
- OSTI ID:
- 7263493
- Country of Publication:
- United States
- Language:
- English
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