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FCNC processes from D-brane instantons
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DOI：10.1007/JHEP02(2011)079.png)
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摘要
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Low string scale models might be tested at the LHC directly by their Regge resonances. For such models it is important to investigate the constraints of Standard Model precision measurements on the string scale. It is shown that highly suppressed FCNC processes like K-0-(K) over bar (0) oscillations or leptonic decays of the D-0-meson provide non-negligible lower bounds on both the perturbatively and surprisingly also non-perturbatively induced string theory couplings. We present both the D-brane instanton formalism to compute such amplitudes and discuss various possible scenarios and their constraints on the string scale for (softly broken) supersymmetric intersecting D-brane models.
Keyword:
Rare Decays
Intersecting branes models
期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
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