SUSY contributions to Rb and top quark decay

Drees, Manuel ; Godbole, R. M. ; Guchait, Monoranjan ; Raychaudhuri, Sreerup ; Roy, D. P. (1996) SUSY contributions to Rb and top quark decay Physical Review D, 54 (9). pp. 5598-5605. ISSN 0556-2821

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Top squark contributions to the radiative correction to Rb and the top quark decay are analyzed over the relevant MSSM parameter space. One sees a 30% increase in the former along with a similar drop in the latter in going from the Higgsino-dominated to the mixed region. Consequently, one can get a viable SUSY contribution to Rb within the constraint of the top quark data only in the mixed region, corresponding to a photino-dominated LSP. We discuss the phenomenological implications of this model for top quark decay and direct top squark production, which can be tested with the Fermilab Tevatron data.

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Source:Copyright of this article belongs to American Physical Society.
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Deposited On:12 Nov 2010 08:17
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