Abstract
We complete the two-loop calculation of β-functions for vacuum expectation values (VEVs) in gauge theories by the missing \( \mathcal{O} \)(g 4)-terms. The full two-loop results are presented for generic and supersymmetric theories up to two-loop level in arbitrary R ξ -gauge. The results are obtained by means of a scalar background field, identical to our previous analysis. As a by-product, the two-loop scalar anomalous dimension for generic supersymmetric theories is presented. As an application we compute the β-functions for VEVs and tan β in the MSSM, NMSSM, and E6SSM.
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Sperling, M., Stöckinger, D. & Voigt, A. Renormalization of vacuum expectation values in spontaneously broken gauge theories: two-loop results. J. High Energ. Phys. 2014, 68 (2014). https://doi.org/10.1007/JHEP01(2014)068
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DOI: https://doi.org/10.1007/JHEP01(2014)068