Two-loop renormalization of tan β and its gauge dependence

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Renormalization of two-loop divergent corrections to the vacuum expectation values (v1, v2) of the two Higgs doublets in the minimal supersymmetric standard model, and their ratio tan β = v2/v1, is discussed for general Rξ gauge fixings. When the renormalized (v1, v2) are defined to give the minimum of the loop-corrected effective potential, it is shown that, beyond the one-loop level, the dimensionful parameters in the Rξ gauge fixing term generate gauge dependence of the renormalized tan β. Additional shifts of the Higgs fields are necessary to realize the gauge-independent renormalization of tan β.

Original languageEnglish
Pages (from-to)174-178
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-4
Publication statusPublished - 2002 Mar 28


Dive into the research topics of 'Two-loop renormalization of tan β and its gauge dependence'. Together they form a unique fingerprint.

Cite this