6533b81ffe1ef96bd12772f8
RESEARCH PRODUCT
Impact of squark generation mixing on the search for squarks decaying into fermions at LHC
Alfred BartlWerner PorodWerner PorodHelmut EberlB. HerrmannKeisho HidakaW. Majerottosubject
Nuclear and High Energy PhysicsStop squarkParticle physicsHigh Energy Physics::LatticeFOS: Physical sciences01 natural sciencesFlavour violationHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)0103 physical sciencesB mesonddc:530010306 general physicsPhysicsLarge Hadron ColliderSquark010308 nuclear & particles physicsHigh Energy Physics::PhenomenologySupersymmetryFermionB-factoryHigh Energy Physics - PhenomenologyHigh Energy Physics::ExperimentSupersymmetryLHCMinimal Supersymmetric Standard Modeldescription
We study the effect of squark generation mixing on squark production and decays at LHC in the Minimal Supersymmetric Standard Model (MSSM). We show that the effect can be very large despite the very strong constraints on quark flavour violation (QFV) from experimental data on B mesons. We find that the two lightest up-type squarks su_{1,2} can have large branching ratios for the decays into 'c-quark + neutralino_1' and 't-quark + neutralino_1' at the same time due to squark generation mixing, leading to QFV signals 'pp -> c bar{t} (t bar{c}) + missing-E_T + X' with a significant rate. The observation of this remarkable signature would provide a powerful test of supersymmetric QFV at LHC. This could have a significant impact on the search for squarks and the determination of the underlying MSSM parameters.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-07-30 |