Hard Photodisintegration of Proton Pairs in {sup 3}He

Journal Article · Mon Oct 13 00:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3013053· OSTI ID:21251461

Piasetzky, Eli; Pomerantz, Ishay ^[1]; Higinbotham, D ^[2]; Strauch, S ^[3]; Gilman, R ^[2]

---

1. Tel Aviv University, Tel Aviv 69978 (Israel)
2. Jefferson Lab, Newport News, Virginia 23606 (United States)
3. University of South Carolina, Columbia, South Carolina 29208 (United States)

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}{sup 3}He{yields}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.

• OSTI ID: 21251461
• Journal Information: AIP Conference Proceedings, Vol. 1056, Issue 1; Conference: 6. international conference on perspectives in hadronic physics, Trieste (Italy), 12-16 May 2008; Other Information: DOI: 10.1063/1.3013053; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CROSS SECTIONS
DEGREES OF FREEDOM
DEUTERONS
ELECTROMAGNETIC FORM FACTORS
GEV RANGE 01-10
GLUONS
HELIUM 3
MOMENTUM TRANSFER
NEUTRONS
PHOTONUCLEAR REACTIONS
PROTONS
QUANTUM CHROMODYNAMICS
QUARK-GLUON INTERACTIONS
QUARKS