Conference paper

Next generation of photodisintegration measurements at Jefferson Lab

E. Piasetzky ; School of Physics and Astronomy, Sackler Faculty of Exact Science, Tel Aviv University, Tel Aviv 69978, Israel
R. Gilman ; Rutgers University, Piscataway, NJ 08854-8019 USA; Jefferson Lab, Newport News, VA 23606 USA
M. Sargasian ; Florida International University, Miami, FL 33199 USA

Abstract

Several highly-rated experiments investigated high-energy, hard photodisintegration of the deuteron. We briefly review the results and the theoretical work devoted to understand them. We discuss here the extension of this program to hard photodisintegration of a pp pair in the 3He nucleus. A prediction is that the pp breakup cross section is not much smaller than the one for pn break up, a clear indication to quark-gluon dynamics. In some models, the energy-dependent oscillations observed for pp scattering are predicted to appear in the γ 3He→ pp + n reaction. We also claim that the measurement of the light-cone momentum distribution of the recoil neutron probes the underlying dynamics. The experiment is proposed for Hall A at Jefferson Lab (TJNAF) with beam energies of 2 − 5 GeV.

Keywords

photodisintegration; hard process; scaling; energy oscillations; light cone momentum distribution

Hrčak ID:

305622

URI

https://hrcak.srce.hr/305622

Publication date:

1.3.2004.

Article data in other languages: croatian

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