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We employ two different statistical tests to examine whether, in theframework of the Constrained MSSM, the experimentally determined values ofBR(b->s gamma) and the anomalous magnetic moment of the muon, (g-2), areconsistent with each other. Our tests are designed to compare the theoreticalpredictions of the CMSSM in data space with the actual measurements, once allof the CMSSM free parameters have been integrated out and constrained using allother available data. We investigate the value of (g-2) as obtained by usinge+e- data alone (which shows a ~3sigma discrepancy with the SM prediction) andas obtained based on tau decay data (which shows a much milder, 1sigmadiscrepancy). We find that one of our tests returns either a statisticallyinconclusive result or shows weak evidence of tension between BR(b->s gamma)and the e+e- data based value of (g-2). On the other hand, our second test,which is more stringent in this application, reveals that the jointobservations of BR(b->s gamma) and (g-2) from e+e- data alone are incompatiblewithin the CMSSM at the ~2sigma level. On the other hand, for both tests wefind no significant tension between BR(b->s gamma) and the value of (g-2)evaluated using tau decay data. These results are only weakly dependent on thethree different priors that we employ in the analysis. We conclude that, if thediscrepancy between the Standard Model and the experimental determinations of(g-2) is confirmed at the 3sigma level, this could be interpreted as strongevidence against the CMSSM.

Are BR(b->s gamma) and (g-2)_muon consistent within the Constrained MSSM?