Towards NNLO Accuracy in the QCD Sum Rule for the Kaon Distribution Amplitude
| dc.creator | Chetyrkin, K. G. | |
| dc.creator | Khodjamirian, A. | |
| dc.creator | Pivovarov, A. A. | |
| dc.date | 2007-12-18 | |
| dc.date.accessioned | 2026-07-07T11:13:50Z | |
| dc.date.available | 2026-07-07T11:13:50Z | |
| dc.description | We calculate the $O(α_s)$ and $O(α_s^2)$ gluon radiative corrections to the QCD sum rule for the first Gegenbauer moment $a_1^K$ of the kaon light-cone distribution amplitude. The NNL0 accuracy is achieved for the perturbative term and quark-condensate contributions to the sum rule. A complete factorization is implemented, removing logarithms of $s$-quark mass from the coefficients in the operator-product expansion. The sum rule with radiative corrections yields $a_1^K(1 \GeV)=0.10\pm 0.04$. | |
| dc.description | 14 pages, 2 figures | |
| dc.identifier | https://arxiv.org/abs/0712.2999 | |
| dc.identifier | http://arxiv.org/abs/0712.2999 | |
| dc.identifier | Phys.Lett.B661:250-258,2008 | |
| dc.identifier | doi:10.1016/j.physletb.2008.02.031 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/191857 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Towards NNLO Accuracy in the QCD Sum Rule for the Kaon Distribution Amplitude | |
| dc.type | text |