https://doi.org/10.1140/epjc/s10052-026-15305-y
Regular Article - Theoretical Physics
Correlator with tensor currents and two masses at two loops
1
Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, CB3 0HE, Cambridge, UK
2
DAMTP, University of Cambridge, Wilberforce Road, CB3 0WA, Cambridge, UK
a
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Received:
24
October
2025
Accepted:
4
January
2026
Published online:
5
February
2026
Abstract
We calculate the vacuum-to-vacuum correlator of two flavour-non-diagonal tensor currents of massive quarks, retaining the full dependence on the two quark masses and the external momentum. For the first time, we include perturbative corrections up to next-to-leading order. Our fully analytical expressions are provided in machine-readable form. Furthermore, we present numerical results for various input parameters, including an estimate of the scale uncertainties. Our results are essential input for applications of dispersive methods, including unitarity bounds and QCD sum rules.
© The Author(s) 2026
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