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| VOLUME 116 (2022) | ISSUE 1 | PAGE 62 |
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On series and integral representations of some NRQCD master integrals
M. A. Bezuglov+*×, A. V. Kotikov+, A. I. Onishchenko+×°
+Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia *Moscow Institute of Physics and Technology (State University), 141701 Dolgoprudny, Russia ×Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia °Skobeltsyn Institute of Nuclear Physics, Moscow State University, 119991 Moscow, Russia
Abstract
We consider new ways of obtaining series and integral representations for master integrals arising in the process of matching of QCD to NRQCD. The latter results are exact in space-time dimension d. In addition, we discuss series expansion of the obtained results at fixed values of d. |