Article
Onset of asymptotic scaling in deuteron photodisintegration
Physical Review Letters
Document Type
Article
Article Version
Publisher's PDF
Publication Date
1-1-2005
Disciplines
Abstract
We investigate the transition from the nucleon-meson to the quark-gluon description of the strong interaction using the photon energy dependence of the d(γ,p)n differential cross section for photon energies above 0.5 GeV and center-of-mass proton angles between 30° and 150°. A possible signature for this transition is the onset of cross-section s-11 scaling with the total energy squared, s, at some proton transverse momentum PT. The results show that the scaling has been reached for proton transverse momentum above about 1.1 GeV/c. This may indicate that the quark-gluon regime is reached above this momentum.
Published Citation
P. Rossi et al. [CLAS Collaboration], "Onset of asymptotic scaling in deuteron photodis-
integration", Phys. Rev. Lett. 94, 012301 (2005)
10.1103/PhysRevLett.94.012301
DOI
10.1103/PhysRevLett.94.012301
None
Peer Reviewed
Citation Information
P. Rossi, Angela Biselli and CLAS Collaboration. "Onset of asymptotic scaling in deuteron photodisintegration" Physical Review Letters Vol. 94 Iss. 1 (2005) Available at: http://works.bepress.com/angela_biselli/6/
Copyright American Physical Society 2005.
Final publisher version also available at http://prl.aps.org/abstract/PRL/v94/i1/e012301