J. Blümlein

activity

20242026

collaborators

3 papers

math-ph2026

The $q$ -extension of iterated integrals and nested sums in quantum field theory

J. BlÃ¼mlein, J. Blümlein, A. M. Gavrilik +2

Analytic calculations of zero- and single-scale quantities in perturbative quantum field theory result into special numbers and functions, the first of which have been revealed dur…

hep-ph2025

The two-mass contributions to the three-loop massive operator matrix elements $A ~_{Q g}^{(3)}$ and $I^ A ~_{Q g}^{(3)}$

J. Ablinger, J. BlÃ¼mlein, A. De Freitas +3

We calculate the two-mass three-loop contributions to the unpolarized and polarized massive operator matrix elements $A ~_{Q g}^{(3)}$ and $I^ A ~_{Q g}^{(3)}$ in $x$ -spac…

hep-ph2024

Challenges for analytic calculations of the massive three-loop form factors

J BlÃ¼mlein, A. De Freitas, P. Marquard +1

The calculation of massive three-loop QCD form factors using in particular the large moments method has been successfully applied to quarkonic contributions in [1]. We give a brief…

The q-extension of iterated integrals and nested sums in quantum field theory

The two-mass contributions to the three-loop massive operator matrix elements A~Qg(3)​ and I^A~Qg(3)​

Challenges for analytic calculations of the massive three-loop form factors

The $q$ -extension of iterated integrals and nested sums in quantum field theory

The two-mass contributions to the three-loop massive operator matrix elements $A ~_{Q g}^{(3)}$ and $I^ A ~_{Q g}^{(3)}$