On the definition of the Z-boson mass

S. Willenbrock, G. Valencia

Research output: Contribution to journalArticlepeer-review


We propose a physical definition of the Z-boson mass, the real part of the pole in the Z-boson propagator, which is field-redefinition invariant and gauge invariant to all orders. The physical Z-boson mass lies approximately 26 MeV below the commonly used "on-shell" mass.

Original languageEnglish (US)
Pages (from-to)373-376
Number of pages4
JournalPhysics Letters B
Issue number3
StatePublished - Apr 25 1991
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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