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Title: Hard Photo-disintegration of proton pairs in 3He

Conference ·
OSTI ID:955919

Hard deuteron photodisintegration has been investigated for 20 years, as its cross section follows the constituent counting rule and it provides insight into the interplay between hadronic and quark-gluon degrees of freedom in high-momentum transfer exclusive reactions. We have now measured for the first time hard pp-pair disintegration in the reaction gamma 3He-->pp+n, using kinematics corresponding to a spectator neutron. Cross sections were measured for 90 deg. c.m. at 8 beam energies, from 0.8 to 4.7 GeV. Preliminary results will be presented and compared to the hard deuteron photodisintegration data.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-060R23177
OSTI ID:
955919
Report Number(s):
JLAB-PHY-08-867; DOE/OR/23177-0521; TRN: US1004815
Resource Relation:
Conference: Invited Talk compiled for Sixth International Conference on Perspectives in Hadronic Physics
Country of Publication:
United States
Language:
English