B(d,s)-anti-B(d,s) mixing and Lepton Flavour Violation in SUSY GUTs: impact of the first measurements of phi(s)

Abstract

In this work we re-examine the correlation between B(d,s)-anti-B(d,s) mixing and Lepton Flavour Violation in the light of recent experimental measurements in the $B_s$ system. We perform a generic SUSY analysis of the allowed down squark mass insertion parameter space. In the SUSY GUT scenario this parameter space is then used to make predictions for LFV branching ratios. We find that the recent measurement for the CP phase ${\varphi }_s$ excludes the lowest rates for tau --> mu + gamma and provides a lower bound of ~ 3E-9 for tan beta = 10. Future experimental improvements in the bound on tau --> mu + gamma and the measurement of phi(s) will constitute a strong test of the SUSY GUT scenario.

8 pages, 7 jpeg figures using pdflatex. Version published in Nuclear Physics B

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• CP Violation in B_s Mixing in the SUSY SU(5) GUT with Right-handed Neutrinos
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• Implications of the anomalous top quark couplings in $B_s-{\bar{B}}_s$ mixing, $B\to X_s\gamma$ and top quark decays
• CP Violating Lepton Asymmetry from B Decays in Supersymmetric Grand Unified Theories
• Supersymmetry beyond minimal flavour violation
• B_s mixing phase and lepton flavor violation in supersymmetric SU(5)
• Penguin Contribution to the Phase of B_s-\bar B_s Mixing and B_s -> mu mu in Grand Unified Theories
• A simultaneous explanation of the large phase in B_s-\bar B_s mixing and B --> ππ/ πK puzzles in R-parity violating supersymmetry
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• Search for New Physics in the B0s mixing phase at CDF
• The Physics of Heavy Flavours at SuperB
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