3-loop Massive $O(T_F^2)$ Contributions to the DIS Operator Matrix Element $A_{gg}$

Autor:	Ablinger, J., Blümlein, J., De Freitas, A., Hasselhuhn, A., von Manteuffel, A., Round, M., Schneider, C.
Rok vydání:	2014
Předmět:	High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
Popis:	Contributions to heavy flavour transition matrix elements in the variable flavour number scheme are considered at 3-loop order. In particular a calculation of the diagrams with two equal masses that contribute to the massive operator matrix element $A_{gg,Q}^{(3)}$ is performed. In the Mellin space result one finds finite nested binomial sums. In $x$-space these sums correspond to iterated integrals over an alphabet containing also square-root valued letters. Comment: 4 pages, Contribution to the Proceedings of QCD '14, Montpellier, July 2014
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1409.1435 Zobrazit plný text záznamu View this record from Arxiv