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Research PapersNo Access

SPARTICLE MASS SPECTRUM IN GRAND UNIFIED THEORIES

B. ANANTHANARAYAN

Centre for High Energy Physics, Indian Institute of Science, Bangalore 560 012, India

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and

The Institute of Mathematical Sciences, Chennai 600 113, India

Department of Physics, North-Eastern Hill University, Shillong 793 022, India

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https://doi.org/10.1142/S0217751X07036889Cited by:41 (Source: Crossref)

Abstract

We carry out a detailed analysis of sparticle mass spectrum in supersymmetric grand unified theories. We consider the spectroscopy of the squarks and sleptons in SU(5) and SO(10) grand unified theories, and show how the underlying supersymmetry breaking parameters of these theories can be determined from a measurement of different sparticle masses. This analysis is done analytically by integrating the one-loop renormalization group equations with appropriate boundary conditions implied by the underlying grand unified gauge group. We also consider the impact of nonuniversal gaugino masses on the sparticle spectrum, especially the neutralino and chargino masses which arise in supersymmetric grand unified theories with nonminimal gauge kinetic function. In particular, we study the interrelationships between the squark and slepton masses which arise in grand unified theories at the one-loop level, which can be used to distinguish between the different underlying gauge groups and their breaking pattern to the Standard Model gauge group. We also comment on the corrections that can affect these one-loop results.

Keywords:

PACS: 12.10.Dm, 12.10.Kt, 14.80.Ly

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Vol. 22, No. 19

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Received 19 April 2007

Revised 6 June 2007

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