Two-Loop Massive Operator Matrix Elements and Unpolarized Heavy Flavor Production at Asymptotic Values Q^2 >> m^2
| dc.creator | Bierenbaum, Isabella | |
| dc.creator | Blümlein, Johannes | |
| dc.creator | Klein, Sebastian | |
| dc.date | 2007-03-27 | |
| dc.date.accessioned | 2026-07-07T11:22:54Z | |
| dc.date.available | 2026-07-07T11:22:54Z | |
| dc.description | We calculate the $O(α_s^2)$ massive operator matrix elements for the twist--2 operators, which contribute to the heavy flavor Wilson coefficients in unpolarized deeply inelastic scattering in the region $Q^2 \gg m^2$. The calculation has been performed using light--cone expansion techniques. We confirm an earlier result obtained in \cite{Buza:1995ie}. The calculation is carried out without using the integration-by-parts method and in Mellin space using harmonic sums, which lead to a significant compactification of the analytic results derived previously. The results allow to determine the heavy flavor Wilson coefficients for $F_2(x,Q^2)$ to $O(α_s^2)$ and for $F_L(x,Q^2)$ to $O(α_s^3)$ for all but the power suppressed terms $\propto (m^2/Q^2)^k, k \geq 1$. | |
| dc.description | 1 style file, 5 figures, 38 pages latex | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0703285 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0703285 | |
| dc.identifier | Nucl.Phys.B780:40-75,2007 | |
| dc.identifier | doi:10.1016/j.nuclphysb.2007.04.030 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/194727 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Two-Loop Massive Operator Matrix Elements and Unpolarized Heavy Flavor Production at Asymptotic Values Q^2 >> m^2 | |
| dc.type | text |