$α_s(m_Z)$, intermediate scales and Fermion masses in supersymmeric theories; two-loop results

Biswajoy Brahmachari

doi:10.1016/S0920-5632(96)00555-5

paper

$α_{s} (m_{Z})$ , intermediate scales and Fermion masses in supersymmeric theories; two-loop results

arXiv:hep-ph/9608326 · doi:10.1016/S0920-5632(96)00555-5

Abstract

One way to generate an intermediate scale being consistent with gauge coupling unification is to add new Higgs scalars above the intermediate scale. We classify such scenarios according to their degree of departure from minimal supersymmetric standard model. Thereafter, we summarize the results of a two-loop renormalization group analysis of the gauge and the Yukawa sectors of such scenarios, and their sensitivity to the {\it input} $α_{3} (m_{Z})$ . The presence of an adjoint color octet above the intermediate scale can raise the gauge coupling unification scale to the $s t r in g$ scale, acommodate a suitable intermediate scale, provide a left-handed $τ$ -neutrino $ma sso f t h eor d er o f f e w e l ec t r o n v o l t s an d a l so ha v e t h er i g h tp r e d i c t i o n o f t h er a t i oo f$ m_b /m_τ$.

Invited talk at SUSY-96, U. Maryland, May-June 1996

αs​(mZ​), intermediate scales and Fermion masses in supersymmeric theories; two-loop results

Abstract

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$α_{s} (m_{Z})$ , intermediate scales and Fermion masses in supersymmeric theories; two-loop results