Hard Photodisintegration of Proton Pairs in 3He

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...

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Published inSixth International Conference on Perspectives in Hadronic Physics (AIP Conference Proceedings Volume 1056) Vol. 1056; pp. 280 - 286
Main Authors Piasetzky, Eli, Pomerantz, Ishay, Higinbotham, D, Strauch, S, Gilman, R
Format Journal Article
LanguageEnglish
Published 01.01.2008
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Summary: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 g 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.
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ISBN:0735405867
9780735405868
ISSN:0094-243X
DOI:10.1063/1.3013053