Strong coupling, unification, and recent data

Paul Langacker, Nir Polonsky

Research output: Contribution to journalArticle

148 Scopus citations


The prediction of strong coupling assuming (supersymmetric) coupling constant unification is reexamined. We find, using the new electroweak data, s(MZ)0.1290.010. The implications of the large s value are discussed. The role played by the Z quark width is stressed. It is also emphasized that high-energy (but not low-energy) corrections could significantly diminish the prediction. However, unless higher-dimension operators are assumed to be suppressed, at present one cannot place strong constraints on the superheavy spectrum. Nonleading electroweak threshold corrections are also discussed.

Original languageEnglish (US)
Pages (from-to)3081-3086
Number of pages6
JournalPhysical Review D
Issue number5
StatePublished - Jan 1 1995

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Strong coupling, unification, and recent data'. Together they form a unique fingerprint.

  • Cite this