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Onset of asymptotic scaling in deuteron photodisintegration.
- Source :
-
Physical review letters [Phys Rev Lett] 2005 Jan 14; Vol. 94 (1), pp. 012301. Date of Electronic Publication: 2005 Jan 06. - Publication Year :
- 2005
-
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(gamma,p)n differential cross section for photon energies above 0.5 GeV and center-of-mass proton angles between 30 degrees and 150 degrees. 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 P(T). 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.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 94
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 15698073
- Full Text :
- https://doi.org/10.1103/PhysRevLett.94.012301