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The massive 3-loop operator matrix elements with two masses and the generalized variable flavor number scheme

Ablinger, J.; Blümlein, J.; De Freitas, A.; Goedicke, A.; Schneider, C.; Schönwald, K.; Wißbrock, F.

We report on our latest results in the calculation of the two–mass contributions to 3–loop operator matrix elements (OMEs). These OMEs are needed to compute the corresponding contributions to the deep-inealstic scattering structure functions and to generalize the variable flavor number scheme by including both charm and bottom quarks. We present the results for the non-singlet and Agq,Q OMEs, and compare the size of their contribution relative to the single mass case. Results for the gluonic OME Agg,Q are given in the physical case, going beyond those presented in a previous publication where scalar diagrams were computed. We also discuss our recently published two–mass contribution to the pure singlet OME, and present an alternative method of calculating the corresponding diagrams.

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Verlagsausgabe §
DOI: 10.5445/IR/1000087593
Veröffentlicht am 19.11.2018
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Theoretische Teilchenphysik (TTP)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 1824-8039
KITopen-ID: 1000087593
Erschienen in 13th International Symposium on Radiative Corrections, RADCOR 2017; St. Gilgen; Austria; 25 September 2017 through 29 September 2017
Verlag SISSA, Trieste
Serie Proceedings of Science ; 290
Nachgewiesen in Scopus
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