Published by Institute of Physics Publishing for SISSA/ISAS Received: February 7, 2003 Accepted: March 28, 2003 SUSY breaking mediation mechanisms and (g 2)¹, + + ¡ B Xsγ, B Xsl l¡ and Bs ¹ ¹¡ ! ! ! Seungwon Baek JHEP03(2003)054 School of Physics, KIAS Cheongryangri-dong, Seoul 130-012, Korea E-mail:
[email protected] Pyungwon Kobc and Wan Young Songc bMichigan Center for Theoretical Physics, University of Michigan Ann Arbor MI 48109, USA cDep. of Physics, KAIST Daejeon 305-701, Korea E-mail:
[email protected],
[email protected] Abstract: We show that there are qualitative di®erences in correlations among (g 2) , ¡ ¹ B X γ, B X l+l¡ and B ¹+¹¡ in various SUSY breaking mediation mechanisms: ! s ! s s ! minimal supergravity (mSUGRA), gauge mediation (GMSB), anomaly mediation (AMSB), gaugino mediation (g~MSB), weakly and strongly interacting string theories, and D brane models. After imposing the direct search limits on the Higgs boson and SUSY particle search limits and B X γ branching ratio, we ¯nd all the scenarios can accommodate ! s the a (g 2) =2 in the range of (a few tens) 10¡10, and predict that the branching ¹ ´ ¡ ¹ £ ratio for B X l+l¡ can di®er from the standard model (SM) prediction by 20% but ! s § no more. On the other hand, the B ¹+¹¡ is sensitive to the SUSY breaking mediation s ! mechanisms through the pseudoscalar and stop masses (mA and mt~1 ), and the stop mixing angle. In the GMSB with a small messenger number, the AMSB, the g~MSB and the noscale scenarios, one ¯nds that B(B ¹+¹¡) .