| Full text | |
| Author(s): |
de Oliveira, E. G.
;
Martin, A. D.
;
Ryskin, M. G.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | Journal of High Energy Physics; v. N/A, n. 11, p. 14-pg., 2013-11-20. |
| Abstract | |
We introduce the physical factorisation scheme, which is necessary to describe observables which are `not completely inclusive'. We derive the formulae for NLO DGLAP evolution in this scheme, and also for the `rotation' of the conventional MSbar PDFs into the physical representation. Unlike, the MSbar prescription, where, for example, the gluon PDF at NLO obtains an admixture of the quark-singlet PDF, and vice-versa, the physical approach does not mix parton PDFs of different types. That is, the physical approach retains the precise quantum numbers of each PDF. The NLO corrections to DGLAP evolution in the physical scheme are less than those in the MSbar case, indicating a better convergence of the perturbative series. (AU) | |
| FAPESP's process: | 12/05469-4 - Timely phenomenological studies relevant to the LHC |
| Grantee: | Emmanuel Gräve de Oliveira |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |