Supersymmetric corrections to ϵ′/ϵ at the leading order in QCD and QED

1994/07/29 by E. Gabrielli, Emidio Gabrielli, G. F. Giudice +1 · 3 citations
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Combinatorics #Mathematics #Minimal Supersymmetric Standard Model #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Physics #Prime (order theory) #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quark #Supersymmetry #hep-lat #hep-ph

paper · pdf · doi:10.1016/0550-3213(94)00400-9

published as Nucl.Phys.B433:3-25,1995; Erratum-ibid.b507:549,1997 · 27 pages, CERN--TH.7381/94 AND PREP. N.1016/94

arxiv created 1994/07/29 · openalex publication_date 1995/01/01 · arxiv updated 2010/11/01 · openalex created_date 2017/03/23 · openalex updated_date 2026/08/05

Abstract

We study the corrections to ε^′ /ε in the minimal supersymmetric model at the leading order in QCD and QED. Supersymmetry can increase the standard model prediction for ε^′ /ε by at most 40% for m_t=174 GeV, an enhancement which is indistinguishable from the present theoretical uncertainties. The most conspicuous effect of supersymmetry is a strong depletion of ε^′ /ε. For certain choices of supersymmetric parameters, vanishing and even small negative values of ε^′ /ε can be obtained for the top quark in the CDF range.

Citations

• The relevance of the dipole penguin operators in ϵ′/ϵ
• Review of particle properties

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