no way to compare when less than two revisions
Differences
This shows you the differences between two versions of the page.
| — | preprints:2010:ttp10-52 [2016/03/17 11:03] (current) – created - external edit 127.0.0.1 | ||
|---|---|---|---|
| Line 1: | Line 1: | ||
| + | ====== TTP10-52 Flavor Physics in an SO(10) Grand Unified Model ====== | ||
| + | |||
| + | |||
| + | < | ||
| + | affect flavor-changing transitions in the quark sector. We present a detailed | ||
| + | analysis of a model proposed by Chang, Masiero and Murayama, in which the | ||
| + | near-maximal atmospheric neutrino mixing angle governs large new b -> s | ||
| + | transitions. Relating the supersymmetric low-energy parameters to seven new | ||
| + | parameters of this SO(10) GUT model, we perform a correlated study of several | ||
| + | flavor-changing neutral current (FCNC) processes. We find the current bound on | ||
| + | B(tau -> mu gamma) more constraining than B(B -> X_s gamma). The LEP limit on | ||
| + | the lightest Higgs boson mass implies an important lower bound on tan beta, | ||
| + | which in turn limits the size of the new FCNC transitions. Remarkably, the | ||
| + | combined analysis does not rule out large effects in B_s-B_s-bar mixing and we | ||
| + | can easily accomodate the large CP phase in the B_s-B_s-bar system which has | ||
| + | recently been inferred from a global analysis of CDF and DO data. The model | ||
| + | predicts a particle spectrum which is different from the popular Constrained | ||
| + | Minimal Supersymmetric Standard Model (CMSSM). B(tau -> mu gamma) enforces | ||
| + | heavy masses, typically above 1 TeV, for the sfermions of the degenerate first | ||
| + | two generations. However, the ratio of the third-generation and | ||
| + | first-generation sfermion masses is smaller than in the CMSSM and a (dominantly | ||
| + | right-handed) stop with mass below 500 GeV is possible. </ | ||
| + | |**Jennifer Girrbach, Sebastian Jaeger, Markus Knopf, Waldemar Martens, Ulrich Nierste, Christian Scherrer, Soeren Wiesenfeldt** | ||
| + | |** JHEP 1106 044 2011 ** | | ||
| + | | {{preprints: | ||
| + | | | | ||