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- Title
The BFKL-Regge factorization and F, F, F<sub> L</sub> at HERA: physics implications of nodal properties of the BFKL eigenfunctions.
- Authors
Fiore, K.; Nikolaev, N. N.; Zoller, V. R.
- Abstract
The asymptotic freedom is known to split the leading-log BFKL pomeron into a series of isolated poles in the complex angular momentum plane. One of our earlier findings was that the subleading hard BFKL exchanges decouple from such experimentally important observables as small- x charm F, beauty F and the longitudinal structure functions of the proton at moderately large Q2. For instance, we predicted precocious BFKL asymptotics of F( x, Q2) with intercept of the rightmost BFKL pole aIP(0) − 1 = ΔIP ≈ 0.4. On the other hand, the small- x open beauty photo- and electro-production probes the vacuum exchange for much smaller color dipoles which entails significant subleading vacuum pole corrections to the small- x behavior. In view of the accumulation of the experimental data on small- x F and F we extend our 1999 predictions to the kinematical domain covered by new HERA measurements. Our parameter-free results agree well with the determination of F, F L and published H1 results F on but slightly overshoot the very recent (2008, preliminary) H1 results on F.
- Subjects
EIGENFUNCTIONS; FACTORIZATION; ANGULAR momentum (Nuclear physics); NUMERICAL solutions to differential equations; NUMERICAL solutions to boundary value problems
- Publication
JETP Letters, 2009, Vol 90, Issue 5, p319
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364009170020