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Slepton mass-splittings as a signal of LFV at the LHC · Around

2009

Slepton mass-splittings as a signal of LFV at the LHC

Buras, Andrzej J., Calibbi, Lorenzo, Paradisi, Paride

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Precise measurements of slepton mass-splittings might represent a powerful tool to probe supersymmetric (SUSY) lepton flavour violation (LFV) at the LHC.

We point out that mass-splittings of the first two generations of sleptons are especially sensitive to LFV effects involving $\tau-\mu$ transitions.
If these mass-splittings are LFV induced, high-energy LFV processes like the neutralino decay ${\nt}_2\to\nt_1\tau^{\pm}\mu^{\mp}$ as well as low-energy LFV processes like $\tau\to\mu\gamma$ are unavoidable.
We show that precise slepton mass-splitting measurements and LFV processes both at the high- and low-energy scales are highly complementary in the attempt to (partially) reconstruct the flavour sector of the SUSY model at work.

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