Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-07-03
IJMPA, Vol. 21, No. 26 (2006) 5205-5220
Physics
High Energy Physics
High Energy Physics - Phenomenology
Version to be appeared in IJMPA
Scientific paper
10.1142/S0217751X06033222
We investigate the Randall-Sundrum model with a light stabilized radion (required to fix the size of the extra dimension) in the light of muon anomalous magnetic moment $a_\mu [= \frac{(g - 2)}{2}]$. Using the recent data (obtained from the E821 experiment of the BNL collaboration) which differs by $2.6 \sigma$ from the Standard Model result, we obtain constraints on radion mass $\mphi$ and radion vev $\vphi$. In the presence of a radion the beta functions $\beta(\l)$ and $\beta(g_t)$ of higgs quartic coupling ($\l$) and top-Yukawa coupling ($g_t$) gets modified. We find these modified beta functions. Using these beta functions together with the anomaly constrained $\mphi$ and $\vphi$, we obtain lower bound on higgs mass $m_h$. We compare our result with the present LEP2 bound on $m_h$.
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