Connected, disconnected and strange quark contributions to HVP
Research output: Contribution to journal › Article
We calculate all neutral vector two-point functions in Chiral Perturbation Theory (ChPT) to two-loop order and use these to estimate the ratio of disconnected to connected contributions as well as contributions involving the strange quark. We extend the ratio of −1/10 derived earlier in two flavour ChPT at one-loop order to a large part of the higher order contributions and discuss corrections to it. Our final estimate of the ratio disconnected to connected is negative and a few % in magnitude.
|Research areas and keywords||
Subject classification (UKÄ) – MANDATORY
|Journal||Journal of High Energy Physics|
|State||Published - 2016 Nov 1|