One-loop effects in supergravity models with an additional U(1)

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Demir D., Pak N.

PHYSICAL REVIEW D, vol.57, no.11, pp.6609-6617, 1998 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 57 Issue: 11
  • Publication Date: 1998
  • Doi Number: 10.1103/physrevd.57.6609
  • Journal Name: PHYSICAL REVIEW D
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.6609-6617
  • Middle East Technical University Affiliated: No


For an Abelian extended supergravity model, we investigate some important low-energy parameters: tan beta, the Z-Z' mixing angle, lightest CP-even Higgs mass bound, Z' mass, and effective mu parameter. By integrating the renormalization group equations from the string scale down to the weak scale we constuct the scalar potential and analyze the quantities above at the tree- and one-loop levels by including the contributions of top squarks and top quark in the effective potential.